Timstar International Catalogue 2018-19

Optics PHYSICS Ray Boxes LED Ray Box Raymond Ray Box An LED ray optics Box, housed in a traditional diecast enclosure. The LED has an average 10,000€hour life, runs cool, and has light output equivalent to a An inexpensive raybox designed specifically for primary and lower secondary 24€W incandescent bulb. Supplied complete with slit plate, collimating lens, use. The raybox is housed in an ABS case with fixed slits - one single slit and and mains power adapter. one set of triple slits allowing two groups to work simultaneously. Raymond also has in-built primary colour filters which, with the use of two plane mirrors, Takes 45€mm wide accessories. allow the overlapping colour mixing discs to be projected. Operates on 6 V AC or DC Comes complete with two plane mirrors and a spare lamp. OP11802 £22.00 ea SPARES & ACCESSORIES £0.56 ea OP11803 Spare bulb Ray Box, Multi Slit OP74660 £49.94 ea SPARES & ACCESSORIES £3.76 ea A robust ray box, featuring a ventilated metal lamp housing manufactured OP11809 Slit Plate, 3 & 1 narrow slit from powder coated steel. The unit comes complete with fixed slits - one single OP120135 Lenses: 100 mm FL, plastic, pack of 5 £16.91 pk slit and two sets of triple slits, allowing three groups to work simultaneously. OP74668 Spare Power Supply £7.48 ea The light source is a 12€V€21€W SBC lamp with a horizontal filament (the bulb is held horizontally, so the filament is parallel with the slits). Fitted with 1€m of cable terminated with 4€mm plugs. LED Ray Box - 4mm Sockets & Battery Pack An economical LED Ray Box, housed in a traditional die cast enclosure. The unit is supplied with a slit plate and a battery pack as a power source, which requires 2 AA batteries (not included). The battery pack plugs into 4€mm sockets mounted on the Ray Box, so it can be replaced with a conventional power supply if desired. Please note that when using a power supply, it must be DC, and the voltage must not exceed 3€V. A higher voltage will blow the LED and invalidate the warranty. However, the LED assembly can be replaced. Takes 45 mm wide accessories. OP11806 £32.50 ea SPARES & ACCESSORIES £1.39 ea EL160910 Spare Bulb Ray Box A ventilated metal lamp house having an open front with extended finned sides and vertical internal grooves. The light source comprises a 12 V S.B.C. lamp in holder with 1 m of twin flex. Complete with metal plate having single and triple slits, one side matt black, the other white. Takes 45 mm wide accessories. BEST SELLER OP11808 ✓ £16.46 ea OP130515 £24.93 ea £2.33 ea SPARES & ACCESSORIES £3.76 ea SPARES & ACCESSORIES OP11809 Slit Plate, 3 & 1 narrow slit OP110950 Spare bulb 12 V 24 W axial filament £16.91 pk OP120135 Lenses: 100 mm FL, plastic, pack of 5 £16.91 pk OP120135 Lenses: 100 mm FL, plastic, pack of 5 £3.76 ea OP170517 Spare Battery Box £6.25 ea OP11809 Slit Plate, 3 & 1 narrow slit £6.25 ea OP170519 LED Assembly £6.25 ea EL06563 BA01983 2 x AA Batteries £1.95 pk Cord Grip, Brass Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 549

PHYSICS Optics Ray Boxes continued Ray Box & Optics Kit Ray Box, Premium An excellent light source and kit of lenses, prisms, mirrors, and filters for teaching reflection, refraction and colour mixing. All the acrylic lenses and Students can carry out a wide range of optics experiments with this high quality, prisms have a small handle to avoid touching and smearing the optical robust ray box. Designed with two slots to hold blanking plates, seven grooves surfaces. All packed in a foam lined box. Requires a 12 V DC 2 A power for lenses. Supplied with 12 V, 24 W, bulb, holder, slit plates & blanking plates supply. made from heat resistant plastic. Takes 50 mm wide accessories. Kit contains: 6 assorted perspex blocks (prisms), 3 cylindrical perspex lenses, 3 mirrors, 2 black plastic slit plates, set of 8 colour filters and a set of 8 colour cards. OP94745 £34.86 ea OP56520 £74.75 kit SPARES & ACCESSORIES SPARES & ACCESSORIES OP104670 Spare Blanking Plates, pack of 2 £3.85 pk OP130510 Halogen Lamp, Low Voltage, 20 W, 12V ✓ ✗ £1.23 ea OP150200 Spare Slit Plate, Single & Triple £2.20 ea OP110170 Spare slit plates, pack of 2 OP160181 Spare Single and Double Slit £3.45 pk £4.16 pk OP110170 Spare slit plates, pack of 2 £4.16 pk OP104672 Spare Collimating Lenses: Plano-Convex, f.l. £9.40 pk Halogen Lamps, Low Voltage £2.33 ea 75 mm, pack of 5 Low voltage halogen lamps, suitable for use in appropriate ray boxes. OP110950 Spare bulb 12 V 24 W axial filament Distance between pins: 4mm. Ray Box, Sliding A metal ray box with a sliding lamp holder. Supplied with single/double & wide/triple slit plates, and a 12 V 21 W lamp. Captive flying leads with 4 mm plugs for connection to a power supply. Takes 50 mm wide accessories. NEW OP130505 Power Voltage ✗ £1.19 ea OP130510 ✓ ✗ £1.23 ea 10 W 12 V 20 W 12 V LED Light Box & Optical Set This comprehensive light and optics set includes a 3 beam LED Ray Box - each beam has an option of white or red beam - and a selection of lenses and prisms, comprehensive teacher’s notes and 9 pupil work cards. The set is an ideal accompaniment to any advanced study of light and optics with experiments to show refraction and reflection through various shaped prisms and lenses, the splitting of light into the rainbow colours, how internal reflection is used in fibre optic cables and the appropriate lenses to use to correct long and short sightedness. OP180470 ✓ £24.94 ea SPARES & ACCESSORIES £1.23 ea OP150110 £96.86 set OP120140 Spare single/double slit plate £1.21 ea OP120145 Spare triple/wide slit plate £4.16 pk OP110170 Spare slit plates, pack of 2 £2.20 ea OP150200 Spare Slit Plate, Single & Triple £3.45 pk OP160181 Spare Single and Double Slit £1.55 ea OP120150 Spare lens: plano-convex, focal length 100mm £3.25 set OP120155 Spare colour filter set £1.74 ea OP20555 Spare bulb 550 …inspiring tomorrow’s scientists through practical science.

Optics PHYSICS Ray Boxes continued Laser Ray Box, 5 Beam Optical Kit with 5 Beam Laser Ray Box The 5-beam Laser Ray Box consists of five independent laser modules. Lasers are very effective light sources for the demonstration of light traces and This laser optics kit can be used in bright light conditions thanks to the multi- effectively demonstrate the transmission of rays through a combination of beam red laser light source. The kit comes complete with Plexiglass (Acrylic) optical elements. Five clearly visible parallel light traces can be seen, and optical accessories and the laser is switchable between 1, 3 or 5 beams, which using the ‘on/mode/off’ switch allows switching between different beam are all parallel to each other. Comes complete with aluminium storage case. combinations. The Laser Ray Box base is magnetised which enables it to be Kit components: Laser class II (1 mW): 1, 3 or 5 laser beams Power supply for used in conjunction with the board, sheets and optical blocks from the Ray laser: 6.3V mains adaptor mat with a disc graduated in degrees and a rule Optics Demonstration set. Includes: Battery box (2 x 1.5V, AA size) and Power graduated in mm, 210 x 380mm 150mm diameter graduated disc Flexible Supply. mirror (plane, concave or convex) Optical blocks/prisms: rectangular; parallel faced; semi-circular; biconvex; biconcave lens; semi-circular tank; trapezoid. Laser type: Diode. Wavelength: 635 nm. BEST Output Power/laser class: Pmax < 1 mW / II. Ray distance: 18 mm. Electrical SELLER Requirements: 3 V DC/300 mA. Dimensions (L x W x D): 112 x 63 x 23mm. OP94725 ✓ £275.00 ea SPARES & ACCESSORIES £1.95 pk BA01983 2 x AA Batteries Laser Ray Box, 3 Beam This 3-beam Laser Ray Box is a more economic version of the 5-beam Laser Ray Box. It is possible to switch the beams electronically for different combinations. Includes: Battery box (2 x 1.5V, AA size). Laser type: Diode. Wavelength: 635 nm. Output Power/laser class: Pmax < 1 mW / II. Ray distance: 24 mm. Electrical Requirements: 3 V DC/300 mA. Dimensions (L x W x D): 112 x 63 x 23 mm. OP120110 £162.44 kit Laser Optics Demonstration Kit OP94728 £181.25 ea SPARES & ACCESSORIES £1.95 pk This kit is designed for use with laser ray boxes, which allow very clear ray BA01983 2 x AA Batteries diagrams to be produced with systems featuring multiple optical devices. Darkening of the room is not usually required. Contents: Magnetic board & 14 optical components with magnetic bases. Magnetic demonstration sheets of: A - model of the human eye; B - photo camera; C - Galileian telescope; D - Keplerian telescope; E - effect of the spherical aberration of a lens, and its correction; F - refraction and reflection demonstration sheet. Also requires a Laser Ray Box (not included). LED Light Colour & Ray Boxes Set Three colour set of LED light source devices in red, blue and green. They can be used for a variety of experiments, as well as together for colour mixing. With a magnetic back, the light sources can be attached to a whiteboard for demonstration purposes. Each device requires 2 x AA batteries. OP94720 £312.50 kit OP155060 £18.73 set SPARES & ACCESSORIES £1.95 pk BA01983 2 x AA Batteries Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 551

PHYSICS Optics Pinhole Cameras Filament Lamp for Optics Experiments Pinhole Cameras Kit Antique style mains bulbs, useful for optics experiments as the low brightness filament makes a useful object for projection of an image, determining focal This pinhole camera class kit contains enough components to make 10 pinhole length etc. They have the added bonus of being an attractive form of mains cameras. The kit includes 10 square section black plastic tubes, 200 x 60 x lighting! Voltage: 230 V AC. Power rating: 60W. 60 mm each, pre-cut black card and translucent paper for mounting on either end of the tubes. A small pin-hole in the black card will then project an image onto the translucent paper at the opposite end of the tube. Requires a bright light source (e.g. carbon filament or antique lamp) or desk lamp with suitable object to project an image. OP74670 £75.85 kit Fitting £10.34 ea SPARES & ACCESSORIES £12.68 pk OP160180 BC OP74672 Spare Film Sheets, pack of 10 LINKED To help you with your ordering, see also... PRODUCTS Bulb Holders (page 279) Camera Obscura LED Filament Mains Voltage Lamp The ancestor of all cameras, this hand-held camera obscura projects an image onto a screen inside the box. The wooden camera is supplied in kit form and LED filament bulbs use a string of fine LEDs to more closely mimic the has an authentic look and feel when assembled. Supplied as a kit in a gift box operation of a classical incandescent filament bulb, while retaining the low or as an unboxed pack of 10 kits. power and cool operation advantage of LEDs. A NEW OP160010 Quantity £11.06 ea OP160012 £38.38 pk 1 £12.02 pk 10 SPARES & ACCESSORIES ST120105 A4 Card, Black Carbon Filament Lamp Replacements NEW 240 V Rough Service lamp which adequately replaces the traditional carbon B filament lamp but has the added benefit of being more robust. Suitable for use in optics experiments such as pinhole cameras, projection of an image, determining focal length of a lens etc. Colour Fitting Power Equivalent power Fitting Power £12.60 ea OP180700 A Warm White BC 5 W 30 W ✓ £7.44 ea OP110155 BC 40 W OP180750 £7.44 ea B Warm White ES 5 W 30 W ✓ 552 …inspiring tomorrow’s scientists through practical science.

Optics PHYSICS A C B Optical Benches Optical Bench Kit, 1 metre Compact Optical Bench Kit This compact Optical Bench with an LED light source offers excellent support and alignment of the optical elements. Ideal for use where space is at a An optical bench kit that fits in a suitcase! The complete kit, including the bench premium or as an economical alternative to a full length optical bench, the itself, can be disassembled in seconds, and stored conveniently and safely in its light source is a bright LED which does not get hot and should give thousands stylish, robust suitcase. of hours use without replacement and, of course, electricity consumption is very The bench features a guide at the rear to ensure the riders are correctly low. The lenses and the objects (Ø50 mm) are held tight in the lens holder with aligned, and a cm/mm scale on the front. It comes in three parts which clip a ring which can be tightened to ensure precise positioning and prevent risk of together easily to form a 1.1 m track. damage. The riders can take either a 10 mm diameter rod, or a 2.5 mm thick sheet. They feature a pointer so their position can be read from the scale on the Contents include: A 1-metre rail, graduated in mm, 1 LED light source on a bench. support, 4 sliders, 2 lens holders, 1 white screen, 1 F-letter, set of 3 diaphragms The lens/slide holders can accommodate either a 40 mm diameter optical (Ø 3, 5 and 8 mm), 1 set of lenses - (F -100, +50, +100, +250). device such as a mirror or lens, or a 50 x 50 mm slide such as a diffraction grating or colour filter. The white LED also fits in this holder. OP110210 B £124.94 kit All parts of this kit are available separately. Optical Bench Kit, 2 metre • 1.1 m plastic bench in 3 parts • White LED with Power Supply This full length Optical Bench is a more comprehensive version of the 1 metre • 5 riders (1 with knearled screw) bench and includes a powerful LED light source with adjustable condenser. The • 4 lens/slide holders LED light source, which does not get hot, should give thousands of hours use • 1 prism table without replacement and the electricity consumption is very low. The rail offers • 5 circular apertures (1.5/3/6/10/20 mm) excellent support and alignment of the optical elements. The lenses and the • 1 single slit objects (Ø 50 mm) are held tight in the lens holder with a ring which can be • 1 triple slit tightened to ensure precise positioning and prevent risk of damage. • 1 figure of ‘1’ • 6 plastic lenses (focal lengths -100/-200/+50/+100/+150/+250 mm) Contents include: A 2-metre rail, graduated in mm, 1 LED light source with • 1 mirror (50x50 mm) adjustable condenser and support, 8 sliders / lens holder + 4 lens holders, • 1 white screen (100 x 150 mm) 1 prism + 1 prism holder, 1 white screen + 1 ground glass screen, 1 F-letter, • Suitcase 320 x 430 x 115 mm set of 3 diaphragms (Ø3, 5 and 8 mm), 1 set of lenses - (F -100, -50, +50, • Weight 1.9 kg +100, +200, +500), 1 concave mirror + 1 convex mirror + 1 plane mirror. OP170200 A £162.44 ea OP110215 C £374.94 kit Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 553

PHYSICS Optics A Optical Bench & Accessories Parallel Beam Light Source Premium Optical Bench Kit This lamp emits a bright, straight beam of light which is ideal for many types of experiments and demonstrations. Both focus adjustment and the horizontal Made from black-anodised aluminium with mm scale. 1m long, cross section placement of the lamp socket within the lamp housing can be done by 26 x 82mm. Supplied with 2 adjustable levelling feet with rubber pads, displacing or turning the handle at the back of the lamp. The Reuter Lamp is 2 sliding saddles with 10mm bore fixings to accept accessories, 1 sliding supplied with a bayonet socket for standard, clear, incandescent 12V/35W saddle for optical disc and 10mm hole. lamps and a two pole socket for halogen lamps rated at 12V/50W. During operation the lamp housing is ventilated by means of a built-in ventilator, so OP66520 A £193.75 kit that the surface temperature of the housing does not get too hot. The unit £4.94 ea is supplied with safety jack SPARES & ACCESSORIES connectors for attaching the OP110900 Replacement lamp power supply, which should be 12V AC/DC 4.2 A, and Optical Bench Extension comes with a 10mm diameter mounting tap appropriate for A 60 cm extension for use with the Joint Link (OP66524) for aligning with use with an optical bench or refracted or diffracted beams. Requires an additional Adjustable Foot with a laboratory stand. A 50W (OP170526) to support it. halogen lamp is supplied. Mass: 1.2 kg. Dimensions (L x W x H): 310 x 76 x 105 mm (excluding mounting tap). OP66522 £68.75 ea OP110160 £293.75 ea SPARES & ACCESSORIES £20.63 ea £22.44 ea OP170526 Foot for Premium Optical Bench Aperture & Slide Holder Joint Link Holder for apertures, colour filters, etc. The aperture holder can be mounted on the lens mount and is For coupling of the Optical Bench to the rotatable and suitable for apertures or filters mounted extension section, with graduated angle in standard 35mm slide frames. Suitable for use with disc for measuring deflection angles. parallel beam light source. OP110165 OP66524 £62.44 ea Lens and Slide Holder A versatile holder on a 10mm diameter steel rod made to hold slides up to 50 x 50mm and 50mm diameter lenses up to 16mm thick. Light Source This simple, high intensity light is extremely suitable for experiments with lenses, prisms and optical gratings. The light source itself is a small, long-filament lamp with the filament aligned along the supporting rod, making it easy to position on the optical bench. The long narrow filament is ideal for performing experiments with lenses and gratings. The lamp housing contains a fan to keep the housing cool to touch. The lamp is rated 12V/35W. OP66536 £27.44 ea £31.19 set Lenses Set of lenses, supplied in a storage box containing: Biconcave -100mm, Biconcave -50mm, Biconvex +50mm, Biconvex +100mm, Biconvex +1000 and Biconvex +2000mm. Dimensions (Dia.): 50mm. OP66534 £99.94 ea OP66538 Quantity SPARES & ACCESSORIES £4.94 ea 6 OP110900 Replacement lamp 554 …inspiring tomorrow’s scientists through practical science.

Optics PHYSICS Optical Bench & Accessories continued Direct Vision Prism Holder Iris Diaphragm Prism holder for direct vision prism OP170310, mounted on a 10 mm diameter Mounted in a black plastic plate 100 x 100mm with 10mm support rod. Comes with a clamping device mounting rod. Max aperture 28mm. and felt covering to protect the prism. OP66540 £43.75 ea OP170902 £18.69 ea £237.06 ea Adjustable Slit Direct Vision Prism A 42mm continuously adjustable slit. Max 9mm. This direct-vision prism is of the ‘double Amici prism’ The precision sprung mechanism and slit in black design, consisting of three prisms (crown glass/ coloured brass is mounted on a black anodised flint glass/crown glass) in back-to-back contact, aluminium square with lugs for horizontal and providing a contact dispersive prism. The outer vertical mounting. Dimensions (W x L): 150 x surfaces of the prisms are blackened, except the 150mm. surfaces where light enters and exits. Polychromatic light is dispersed with simultaneous correction of OP66544 divergence, so that the exit beam is parallel to the input one. Slits and Filter Holder Dimensions: 105 x 20 x 20 mm Designed to accept optical filters, slits etc £99.94 ea OP170310 in standard 35mm slide mounts (50 x 50mm). With 10mm fixing rod. White Screen In laminated plastic with white surface with 10mm fixing rod. Dimensions (H x W): 250 x 250mm. OP66542 £33.13 ea OP104660 £31.20 ea Young’s Slits Profiled Rail These come mounted in a 35mm slide holder. A profiled rail designed for mounting and aligning optics equipment relative to Three slit spacings are available. each other. To be used with one or more sliding saddles with 10mm diameter hole and thumb screws. Dimensions (L): 370mm. Please note: Sliding Saddles NOT included. OP104636 Slit distance £18.94 ea OP104652 £43.69 ea OP104638 £18.94 ea OP104640 0.1 mm £18.94 ea 0.5 mm 1.0 mm Prism Table for Optical Bench Sliding Saddle This prism table (prism not included), designed for use For fixing of optical equipment with max. 10mm diameter fixing rod. Made of with the premium optical bench or profiled rail, has a black-anodised Aluminium with thumb screw and measuring line. Dimensions 62 mm diameter disc mounted on a 10 mm diameter (W x H x L): 35 x 50 x 84mm. stainless steel rod. Features an adjustable spring clamp for holding prisms from 10 mm to 50 mm high. Prism not included. OP170900 £28.69 ea OP104656 £32.44 ea Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 555

PHYSICS Optics Lasers Blue Laser Pointer Red Laser Pointer Superb class II (≤1 mW) laser pointer emitting true blue laser light, at a A Class II laser pointer for lectures and demonstrations. Powered by 2 x wavelength of 445 nm. An excellent addition to the laser range for diffraction AAA batteries (Not Supplied). experiments etc. BEST OP161445 £81.19 ea SPARES & ACCESSORIES £2.05 pk SELLER BA01984 2 x AAA Batteries OP11882 ✓ £13.69 ea Violet Laser Pointer SPARES & ACCESSORIES £2.05 pk BA01984 2 x AAA Batteries A class 2 (< 1mW) laser emitting purple/violet light at 405nm. Great for demonstrating Total Internal Reflection in a bottle of tonic water! Red/Orange Laser Pointer, 635nm This class II (≤1 mW) red/orange laser pointer, emitting light at a wavelength of 635 nm, provides a higher visibility (brighter) light than standard 650 nm red lasers for the same power output. OP150100 £37.44 ea SPARES & ACCESSORIES £2.05 pk BA01984 2 x AAA Batteries OP161465 £22.44 ea Red & Green Laser Pointer SPARES & ACCESSORIES £2.05 pk BA01984 2 x AAA Batteries This quality combination class II laser pointer has options for both red and green lasers and is deal for highlighting and presentations or for comparing the properties of red and green laser light. The unit has a chrome finish exterior and comes complete with 2 x AAA batteries. Red laser specification: 650 nm, <1 mW. Ultra bright green laser specification: 532 nm, <1 mW. BS EN 60825 compliant and labelled. Green Laser Pointer OP120125 £50.94 ea SPARES & ACCESSORIES £2.05 pk An extremely vivid class II green laser pointer with quality slim and BA01984 2 x AAA Batteries compact construction. Ideal for presentations and highlighting etc. Green laser specification: 532nm, <1mW. Weight: 70g. Dimensions (L x Dia.): LASER DEFINITION & 138mm x 13.5mm. WAVELENGTHS OP120120 £43.69 ea SPARES & ACCESSORIES £2.05 pk BA01984 2 x AAA Batteries …inspiring tomorrow’s scientists through practical science. 556

Optics PHYSICS Lasers continued Multifunction Laser Laser This multifunctional laser provides an extremely versatile solution for laser optics. It offers the facility to use a single light beam for laser experiments, This laser emits an intense monochromatic red beam of wavelength a horizontal plane light beam for the study of wave propagation and 1 or 630 - 640nm at 0.9mW (Class II operation). Typical beam divergence is 3 light beams in a vertical plane for ray optic experiments. The unit also allows approximately 1 millirad. The laser beam can be modulated by applying an studying transmission through a fibre optic using the modulated input for the external digital or analogue waveform to the 3.5mm jack socket on the rear laser beam. The magnetised base means it can also be used on magnetic panel. Alternatively the beam can be modulated by the internal generator boards, for easier demonstration. Can be powered by 2 x 1.5 V batteries (not which produces 0.1µs pulses at approximately 1MHz. This allows speed of light included) or mains power adapter (included). Specifications: Wavelength: experiments to be easily performed. The passage of light through light guides 650nm Power: 1mW (class II) Modulation: TTL signal (5 V) with 4mm safety and optical fibres can be demonstrated by filling a glass or plastic tube or plug Power supply: 2 x 1.5 volt battery or mains adaptor provided. U-tube with very dilute milk. BEST SELLER OP84740 £276.70 ea OP120100 ✓ £93.69 ea Laser Detector Reflection/Refraction Apparatus Kit For detection of modulated laser or other light sources over a wide frequency This kit comprises a red laser which attaches and rotates around a graduated range. Output is available from two 4 mm sockets and through the built in plate, which makes it easy to see and measure the incident beam angles for loudspeaker if the modulation is in the audio range. May be used with a both reflected and refracted beams. It can be used in a vertical plane with modulated laser to detect analogue or digital data including high frequency the cylindrical tank with water or in a horizontal plane with the glass optical pulses used to determine the speed of light. Frequency range 100 Hz to 5 MHz. accessories, which are included. Useful to demonstrate: Verification of the Dimensions (L x W x H): 68 x 120 x 36 mm. Snell’s law of refraction with a semi-circular block or a cylindrical tank; Total or diffuse reflection with a plane mirror; 90° reflections in a 90° prism; Double refraction with parallel faces; Determination of the angle of a prism; Multiple reflections and refractions in a trapezoidal prism. OP84735 £74.97 ea OP120105 £149.94 kit Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 557

PHYSICS Optics Laser Diffraction Kit Optics Screen This kit comprises 18 slides which allow performance and demonstration A white acrylic screen mounted in a wooden base, suitable for image projection of e.g. “Fraunhofer Diffraction”, “Fresnel Diffraction”, a number of other in optics experiments. Dimensions (H x W): 190 x 120. diffraction experiments, to explore the topic of holograms and many other experiments. The slides are labelled and come in a storage box complete with an inventory list and brief experiment notes • Six slides of 1 to 6 slits • Three gratings to match the slits • Diffraction grating 80 lines / mm • Diffraction grating 300 lines / mm • Single slit - Tapered • Double slit - Tapered • Metal gauze - 300 mesh • Circular apertures 1.0, 0.60, 1.40, and 0.30 mm nominal diameter • Hologram • 2 Polaroids OP74805 £18.65 ea Optics Board This quality optics board is designed to take optical pins where there is a need for pins to be held in place, or for mounting white paper or card for optics experiments. The board is made from 9 mm thick fibreboard bonded to 11 mm MDF. Dimensions (L x W x D): 390 x 300 x 20 mm. OP84670 £240.31 kit £23.63 ea Warning Signs OP74810 Vinyl, self adhesive. Dimensions (W x H): Optical Pins 20 x 30 cm. Nickel plated steel, 51 mm long. In packs of 100. SA27058 Type £7.01 ea Laser Beam Optical Screens & Boards OP11788 £4.94 pk Aperture Slide Holder Stand Phosphorescent Plate Robust holder suitable for holding slides, apertures etc. for optical experiments. This phosphorescent screen will exhibit light emission for some time after it has Features a shielding plate, 80 x 120 mm, with a heavy, stable metal base. been illuminated. This effect depends upon the light source containing some Suitable for use with 50 mm wide slide mounts, such as our diffraction gratings, ultraviolet light. The screen can thus be used to confirm that UV light is present laser diffraction slides, Young’s slits, Nuffield colour filters and Polaroid filters. in a light source. Dimensions (L x W): 70 x 90€mm. OP170910 £32.44 ea OP110140 £11.19 ea 558 …inspiring tomorrow’s scientists through practical science.

Optics PHYSICS Optical Screens & Boards continued Spectral Lamps Fluorescent Plate Spectral lamps with E27 screw type fitment. Requires lamp holder (OP110180) and transformer (OP110185). This plate exhibits fluorescence when exposed to ultraviolet light. (In contrast to phosphorescent materials, where visible light emission persists some time after exposure to the UV, fluorescent materials re-emit visible light only during exposure.) It can be used to demonstrate this phenomenon and to show how some materials (e.g. UV film in Accessory Kit) filter out UV light. Supplied unmounted. Dimensions (L x W): 70 x 95 mm. OP110145 £12.43 ea OP110190 Type £84.38 ea OP110195 £84.38 ea Ultraviolet (UVA) Accessories Set OP110200 Sodium £84.38 ea Mercury UVA accessories set consisting of standard glass plate, fluorescent plate, Neon phosphorescent plate, UVA-filter, UVA plastic film and normal plastic film. For experimenting with ultraviolet light. Spectral Tubes Spectral Tube Holder & Power Supply European designed and manufactured. For quick and safe setting up of spectral tubes. The spectral tube is mounted from the front in the insulated holders with electrodes, where the lower holder is spring loaded parallel to the tube axis. The holder is provided with a power supply that can deliver 6 kV DC at max 2 mA to the electrodes built into the base of the insulated holder. Can be used with spectral tubes OP66582 to OP94616 and with many other types of spectral tubes. For 230 V AC. Dimensions (L x H x W): 78 x 78 x 290 mm. OP110150 £87.44 set Spectral Lamps Spectral Lamp Holder This Spectral lamp house is designed for use with spectral lamps which fit a E-27 socket. These spectral lamps must never be connected to the mains, but require a special control transformer, as listed below. The Spectral lamp house is equipped with a ventilator ensuring that the surface of the Spectral lamp house does not exceed 60 °C. OP66580 £249.94 ea OP110180 £206.25 ea Spectral Tubes Straight pattern, fitted with a 6.5 mm diameter contact cap at each end. For observing line and band spectra from various noble and diatomic gases. Dimensions (L x Dia.): 70 x 6.5mm. Spectral Lamp Control Transformer Control transformer required to power the Spectral Lamp Holder OP110180, and the Mercury Lamp Holder EC170122. The unit has a specialised 3-pin socket for connecting the lamp holders. •••• Current: 1 A max. 185 x 120 x 220 mm Power supply: 230 V AC Dimensions: (W x H x D): Weight: 3.5 kg OP110185 £206.25 ea OP66582 Type £43.69 ea OP66584 £49.94 ea OP66586 Spectral Tube Ar £49.94 ea OP66588 Spectral Tube He £49.94 ea OP66590 Spectral Tube H2 £49.94 ea OP66592 Spectral Tube Hg £49.94 ea OP94614 Spectral Tube Ne £49.94 ea OP94612 Spectral Tube O2 £49.94 ea OP94616 Spectral Tube Kr £56.19 ea Spectral Tube N Spectral Tube Xe Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 559

PHYSICS Optics Spectrometers Standard Spectrometer Kit RSpec-Explorer™ Kit An economically priced instrument, which is nevertheless capable of much useful quantitative work. The main structural parts, including the collimator and Exclusive to Timstar, this superb, durable, easy to set-up and use digital telescope bodies are heavy castings, other metal parts being bright plated. spectrometer creates real-time images, graphs and measurements via the exclusive software. Once the software has been downloaded and installed, the SCALE: 170mm dia. divided 0 to 360° x 1°, independently rotatable with spectrometer simply plugs into a USB port and the live-feed camera is selected locking screw. A spring-loaded vernier scale attached to the telescope by clicking on a tab. That’s it - you are now up and running. The software also mount provides readings to 0.1° (6 minutes of arc). includes a reference library of common elements. Suitable for use with: flame emissions from burning salts; spectral (gas) tubes; LED’s & LED columns; many COLLIMATOR: Mounted on fixed pillar with axis adjustment. Objective other types of visible light source. lens 150mm FL, an aperture of 21mm and is carried in spiral focusing Includes Camera, Tripod, USB lead, Software and Tutorial Videos. systems. Unilaterally adjustable slit 6mm long. For a video demonstration: timstar.co/RSPECvideo TELESCOPE: Mounted on moveable pillar with adjustment, locking screw • Simple to set-up and easy to use. and axis adjustment. Objective lens has 170mm FL, 21mm aperture and • All students see the same thing – via classroom projector and is carried in a spiral focussing system. whiteboard. RAMSDEN EYEPIECE: With cross wires and locking ring focus adjustment. PRISM TABLE: The table is provided with three leveling screws and is line • Camera auto-focuses and adjusts to a wide range of light conditions. • Spectral range: 390 to 700 nanometres. marked to assist placement of prism. • Accuracy: 1% or better. Spectroscopic features as narrow as STANDARD ACCESSORIES SUPPLIED: 1 prism clamp for prisms up to 3 nanometres can be measured. 40mm high, 1 diffraction grating holder, aperture 25 x 25mm, 1 small screwdriver, 1 tommy bar for axis adjustment and case. • Works with any Windows computer (XP or more recent). • Designed for education and research • No tricky calibration or adjustments to make- just plug and play • Comes complete with 7 instructional videos (more than 30 minutes total) SP13816 £236.49 kit ✓ £16.46 ea SPARES & ACCESSORIES ✓ £17.44 ea SP13820 SP13821 Crown glass prism, 32mm aperture Extra dense flint glass prism, Face 32 x 32mm Intermediate Spectrometer Kit This is a robust instrument designed specifically for student use, which nevertheless is capable of very high performance. The main structure is of a heavy cast metal, with bright plated fittings. SCALE: The 150mm dia. Circled with protective plastic shield is fixed to the telescope movement and the table is attached to the double ended vernier, which reads to 1 minute of arc. Both telescope and table rotation have fine adjustment screws, and release of a clamping screw enables adjustment of both movements by hand. COLLIMATOR: Mounted on fixed and fitted with 178mm focus achromatic objectives, 25mm clear aperture. Also fitted is a unilaterally adjustable slit 7mm long. TELESCOPE: Mounted on moveable pillar and fitted with 178mm focus achromatic objectives, 25mm clear aperture. Also fitted is a x8 Ramsden eyepiece and a glass cross line graticule. Both the telescope and collimator have rack and pinion focusing. Means are provided for levelling the axis of both optical units and for squaring them to axis of rotation. PRISM TABLE: The table is marked with lines to assist placing the prism with respect to the table levelling screws. STANDARD ACCESSORIES SUPPLIED: 1 prism clamp, 1 diffraction grating holder, 1 magnifier, 1 tommy bar for adjustment optical axis and case. SP150100 £349.94 kit ... literally take it out OUR EXPERTS SAY... of the box and you can be set up in minutes. Used with an overhead projector the whole class SP13817 £374.94 kit ✓ £16.46 ea can see results immediately and start SPARES & ACCESSORIES ✓ £17.44 ea investigating. SP13820 Crown glass prism, 32mm aperture SP13821 Extra dense flint glass prism, Face 32 x 32mm 560 …inspiring tomorrow’s scientists through practical science.

Optics PHYSICS Spectrometers continued Hand Spectroscope Tube spectrometer Ideal for viewing line emission spectra and solar Fraunhofer lines. This useful instrument gives an excellent bandwidth of spectra by using a 600 lines per A simple, robust, low-cost tube spectrometer ideal for introducing the concept mm diffraction grating. It has an image-centring prism. Dimensions (Dia. x L): of spectrometry. It comprises a 150 x 28 mm tube, with 15 x 0.5 mm slit at one 25 x 105mm. end, and 6 mm diameter aperture with 140 lines/mm diffraction grating at the other. When a light source is observed through the device, the original and first order images can be seen. BEST SELLER OP170100 Quantity ✓ £9.94 ea OP170100/10 ✓ £89.44 pk 1 10 Spectroscope OP66595 £92.88 ea The performance of this ultra-low cost spectroscope is comparable with Diffraction Gratings instruments costing much more. It uses a CD or DVD as a reflective diffraction grating and clearly shows Fraunhofer lines in the spectrum arising from natural Diffraction Gratings, Economy light, distinctive emission bands from artificial sources such as sodium lamps and differences between different types of fluorescent lighting tubes. The Economy diffraction gratings in a 50 x 50 mm plastic slide. Aperture 36 x spectroscope is made from polypropylene and supplied in flat pack form for 24 mm. Screen printed on the slide are the lines/mm, and arrows to indicate quick self-assembly. It comes with a free CD but can be used with any CD (or a the direction of the lines and gaps. DVD for higher resolution). BEST SELLER OP94650 ✓ £5.16 ea BEST SELLER Direct Vision Spectroscope For rapid examination of spectral composition of white light. Consisting of a metal tube with draw out focussing and an adjustable slit fitted with achromatic objective glass and 3 element prism. A BC OP170150 Grating ✓ £9.94 ea OP170152 £10.31 ea OP170154 A 300 lines/mm £11.19 ea B 600 lines/mm C 1000 lines/mm Diffraction Gratings Mounted in 50 x 50mm slide holders. Aperture size 36 x 24 mm. With tough plastic frame. Made in the UK. OP11887 £46.25 ea Spectroscope, Hand-Held Direct Vision This direct vision spectroscope incorporates a fine slit in conjunction with an efficient blazed grating, which transmit a high proportion of energy into the first and second order spectra, giving very bright and sharp spectra. The third order spectra can also be seen, although not as brightly. OP150600 £36.60 ea OP11790 Grating £18.63 ea OP11791 £18.63 ea OP11792 80 lines/mm ✓ £18.63 ea OP11793 100 lines/mm £22.11 ea 300 lines/mm 600 lines/mm Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 561

PHYSICS Optics Diffraction continued Diffractive Optical Elements Diffraction Gratings Slide This optical component has a microstructured surface that diffracts light into a tailored pattern. The light is redistributed with very little loss. Stunning images Set of gratings 96, 300 and 600 lines/mm mounted on a single slide with three can be projected with a simple laser pen. There are two star signs, a circle 16 x 19mm apertures. Dimensions (L x W): 90 x 30mm. diffuser, a company logo, and a globe that rotates as the laser is moved along the microstructured surface. For a video demonstration, go to: timstar.co/DiffractiveElements OP11795 £30.70 ea OP170745 £20.44 ea Diffraction Glasses Optical Grating Model Kit Set The relationship between light and colour has never been explained so clearly It can be difficult to understand how an optical grating works, but this as with these fun glasses. The double-axis diffraction grating embedded in the apparatus allows a grating to be visualised. This self-assembly kit provides lenses ensure that, when looking through these glasses, almost any single light optical gratings with very large grating spacing – large enough for the “lines” source can be split into a 3D spectrum of the component colours. Specifically to be easily seen with the naked eye. In this manner designed to fit students up to to KS3 but will fit older students. students can directly observe the structure of the grating and see the result of sending monochromatic light through the grating (base not included). On a projection surface, at a distance of 6-10 metres from the grating, the diffraction of a laser beam is clearly observable. The set supplied includes enough parts to make 4 models. OP170111 £43.69 pk OP94645 Quantity £8.50 pk Photons 10 Determining Wavelength Of Light Apparatus RGB – WAVELENGTH & FREQUENCY The apparatus is designed to measure the wavelength of light by studying the interference pattern from a double slit. The equipment is well suited for student Richard Of York Gave Battle Letter Colour Wavelength Frequency lab exercises. The device contains a 12 V festoon lamp with a holder for colour In Vain i.e. ROYGBIV R Red filters and a millimetre scale with moveable markers. The light is viewed at a distance of about 3 metres through a double slit. The viewer directs a co-worker to adjust the markers so that the distance between them corresponds to 10 interference maxima. Afterwards the precise distances can be measured and the wavelength of the light can be calculated. Red and blue colour filters and a double slit are provided. Power source required: 12 V AC/DC, 1.3 A 620-750 nm 400-484 THz O Orange 590-620 nm 484-508 THz Y Yellow 570-590 nm 508-526 THz G Green 495-570 nm 526-606 THz B Blue 450-495 nm 606-668 THz I Indigo 420-450 nm 668-714 THz V Violet 380-450 nm 668-789 THz OP150700 £112.44 ea 562 …inspiring tomorrow’s scientists through practical science.

Optics PHYSICS Photons continued Speed of Light Led Light Column Frederiksen Speed of Light Apparatus This useful apparatus serves as a separate wavelength LED colour light Watch the progressive delaying of light pulses as they travel longer and longer. source for optics experiments, such as first to third order colour fringes using Demonstrate that Light has a finite speed diffraction gratings or spectroscopes. The LED’s can be individually selected Determine the speed of light using the rotary switch, or the full range can be selected together. Colours Fast and easy setup represent the visible range from red through to Direct time-of-flight measurements with pulses of light violet, with a white LED included for full colour Experiments can be performed easily in a standard classroom spectra comparison. The unit also comes with Very short but powerful pulses of light are emitted from the box. When the light 4mm sockets to allow voltage measurements for pulses hit the special retroreflective foil of the reflector they are directed back each separate LED/wavelength, for calculation of towards the source – with no need for tedious adjustments. Via a beam splitter, Planck’s constant. the light pulses finally hit a high speed photodiode, converting them into electric pulses to be displayed on an oscilloscope. A separate synchronization OP150000 £43.69 ea signal marks the time of pulse emission and constitutes a reference for timing the pulses. Please note: The speed of light apparatus also requires an oscilloscope. We recommend using the apparatus with our 60 MHz PC Oscilloscope, EL170110, as this has a high bandwidth and also allows projection onto bigger screens via a PC. The apparatus can also be used with most other oscilloscopes and PC oscilloscopes. A bandwidth of at least 25 MHz is recommended, along with an adequate sample rate to display the signal on a 5-10 ns/div time scale. Coax cables, user manual and mains adapter are included. Set includes: Speed of light apparatus; Power adapter; Reflector screen; English manual. Planck’s Constant Apparatus This apparatus is designed to determine the approximate value of Planck’s constant, using a range of LEDs of known wavelength, to allow the electron/ photon energy to be calculated. There are 7 LEDs, covering the light range from deep blue at 470 nm to near IR at 940 nm, mounted on a box with 4 mm sockets for attachment to a voltmeter and ammeter for voltage and current measurements. By monitoring the voltage at which each LED just begins to emit light, a graph of energy input as a function of light emitted frequency can be plotted and an approximate value of Planck’s constant can be deduced. Requires a 9 V DC power supply (standard lab power supply). OP170600 £493.75 ea RA140105 £43.14 ea Fibre-Optics Fibre Optic Torch Explore fibre optics with these fascinating battery-operated torches. Light emerges from the end of long flexible fibres, which can be bent and twisted. Frederiksen Planck’s Constant Apparatus LA103600 Quantity £14.20 pk 3 This apparatus is designed for the determination of Planck’s constant. Fibre Optic Cable, Unsheathed The knee voltage in the characteristic curve of a light emitting diode (LED) is closely related to the energy of the emitted photons. By graphing knee voltages This unsheathed cable illustrates the magical qualities of optical fibre light for a range of LEDs as a function of the frequency of the emitted light, a linear transmission. Dimensions (L x Dia.): 1 metres x 1mm. relationship is established. The LEDs used emit UV (ultraviolet), NIR (near infrared) and three wavelengths in the visible region. The LEDs have been carefully selected to emit light within a narrow, well-defined wavelength interval. Either the built-in 9 V block battery or an external 9-12 V DC adapter can be used as power supply. OP104644 £2.88 ea Fibre Optic Polymer Cable An un-terminated coil of polymer fibre for general fibre optic work. Dimensions (L): 20 metres. RA150900 £181.25 ea OP66255 £93.19 ea Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 563

PHYSICS Optics Fibre-Optics continued Newton’s Rings Fibre Optics System Newton’s Rings Apparatus Set of one Transmitter and Receiver each housed in a small plastic case. The This simple apparatus nicely demonstrates Newton’s rings. It consists of a system comes complete with 5 m and 20 m sheathed polymer optical fibre slightly convex lens, mounted against a flat glass plate. Interference fringes, coils terminated with clip housings to mate with the transmitter and receiver known as Newton’s rings, can be observed as a series of light and dark units. This set provides a self-contained system for demonstrating and using concentric circles around a central dark spot where the lens and glass plate a fibre optic data link. The transmitter unit is housed in a small plastic case meet. This phenomenon is usually observed using a monochromatic light and contains all the electronics for producing the modulated light source as source such as a sodium lamp. The pressure on the glass can be varied by well as an easily accessible PP3 battery compartment. A choice of modulation using the fitted screws. Glass Dimensions (Dia.): 60mm. is available - a variable frequency audio tone in the range 1Hz - 1 KHz and Please note: a sodium light source and low power microscope e.g. a vernier or a 250 KHz square wave for speed of light investigations, which links to 4mm travelling microscope will be required to see the rings properly. sockets for monitoring on an Oscilloscope. The receiver is in a similar case and contains a variable gain amplifier with integral loudspeaker, as well as direct monitoring sockets for an oscilloscope. The wavelength used is in the visible red part of the spectrum and with the modulation set at 1Hz the pulsing beam can be easily seen. OP74680 £377.59 kit SO130525 £13.54 ea Analogue to Digital Transmitter Polarisation Polarisation Model This Analogue to Digital Transmitter set demonstrates the use of carrier waves for sending signals. It consists of a transmitter module and receiver module A simple model of polarisation to show the with an infrared link and users can select FM, AM, high quality digital or low effect of polarising filters. The pieces are quality digital transmission. The transmitter unit inputs can be connected to made from live-edge acrylic. mp3 players, radios, and other audio sources, and the receiver unit outputs can be connected to amplified loudspeakers. Each unit has two monitoring points for use with a digital oscilloscope connected to a computer. The set includes a power supply for each module. OP104632 £9.05 ea Polaroid Squares Unmounted Polaroid squares suitable for class work on polarised light. OP160420 £187.44 ea Optical Signal Transmitter OP74730 Dimensions Quantity £12.66 pk OP110105 £66.26 pk This Optical Signal Transmitter set demonstrates the use of visible light for 50 x 50 mm 2 sending signals. It consists of a transmitter module and receiver module, each 150 x 150 mm 2 with two transmission channels, plus an optional optical fibre link for each channel. The transmitter unit inputs can be connected to mp3 players, radios, and other audio sources, and the receiver unit outputs can be connected to amplified loudspeakers. Each unit has two monitoring points for use with a computer running sound analysis software. The set includes a power supply for each module. Polaroid filters, mounted High quality polaroid filters, sandwiched between glass sheet for rigidity and ease of cleaning, and mounted in 35mm slide holder frame. OP160700 £187.44 ea OP160800 Quantity £7.63 pk OP160805 £34.98 pk 564 2 10 …inspiring tomorrow’s scientists through practical science.

Optics ● Physical Quantites PHYSICS Polarisation continued Polaroid Analyser Samples Polaroid Stress Analyser A set containing four additional pre-cut shapes and a 200 x 200 mm sheet (for cutting your own shapes) for use with the OP74720 Polaroid Stress Analyser. The Polaroid stress analyser allows students to view stresses which exist in clear plastic materials. This simple apparatus consists of two crossed Polaroid filter squares (i.e. axes perpendicular to each other), 65 x 65 mm, on a plastic handle. A gap between the Polaroid squares allows clear plastic shapes (or even a clear ruler) to be placed between them, to view any stresses within the material - the stresses show as coloured areas and lines within the plastic. The analyser comes with two cut-out shapes which can be compressed to alter the stress patterns. Additional shapes are also available separately. OP74725 £34.39 set Polarimeter A simple, cost-effective polarimeter suitable for student use. A monochromatic light shines through a polariser at the base of the polarimeter and through a sample tube containing the solution for testing. A second polariser located in the eyepiece is then rotated and the angle of rotation/extinction measured on the integral scale. Requires a standard DC power supply to power the light source. OP74720 £33.55 set OP74740 Polarimeter £58.55 ea SPARES & ACCESSORIES £6.76 ea Physical Quantities OP74742 Spare Tube Density Mole Set Equal Mass Metal Cylinders Set This Mole Set contains samples of four different metals and helps students to Equal mass & diameter cylinders showing the visualise a mole of a substance in a solid state, as well as developing a better difference in density of metals. Comprises six 100 g, understanding of the concept of the mole, mass, molar mass, along with 16 mm diameter cylinders of brass, lead, copper, the differing properties of the various metals. The set contains four element iron, zinc, and aluminium in a wooden holding specimens: copper, iron, zinc and aluminium, each containing approximately block. one mole (6.023 X 1023 atoms) of the element. MA120200 Comparison of each sample, side-by-side, clearly shows that the same molar amount of different elements have different masses and occupy different Density Cube Set volumes, due to each element having a different atomic mass and density. A set of cubes for density investigations or BEST comparison of different materials, consisting of nine 25 mm sided cubes. Set includes SELLER brass, iron, copper, aluminium, hardwood (beech), softwood (pine), nylon, PVC and £24.40 set acrylic. Supplied in wooden box. MA150064 £27.79 set MO170300 ✓ £23.69 set Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 565

PHYSICS Physical Quantities Materials Metal Strips Metal Cubes Set B Comprising aluminium, brass, copper, iron, lead, zinc and tin. By examining properties such as magnetism, density and appearance, and comparing to known data, students can identify each material. A Type Dimensions Quantity MA19022 Aluminium, soft 200 x 12 mm 10 £7.03 pk MA19024 10 £8.38 pk MA19026 Brass 200 x 12 mm 10 £10.64 pk MA19028 10 £6.85 pk Copper 200 x 12 mm Mild Steel 200 x 12 mm Dimensions Quantity LINKED To help you with your ordering, see also... PRODUCTS Smart Materials (pages 630-634) MA18950 A 10 mm 7 £3.34 set MA18952 B 20 mm 7 £15.70 set Metal Cubes £8.64 pk Tungsten, High Density Metal £12.38 pk MA18960 Type Dimensions Quantity £16.74 pk Tungsten metal (aka wolfram) has a very high density, 19.25 g/cm3, which is MA18962 comparable to that of uranium and gold. It has a melting point of 3422 °C, MA18964 Aluminium 20 mm 5 £4.43 pk which is the highest of all the non-alloyed metals. MA18966 Brass 20 mm 5 £6.99 pk MA18968 Copper 20 mm 5 £6.46 pk Tungsten is used in incandescent lightbulb filaments, where it emits bright light MA18970 Iron 20 mm 5 £22.23 pk when heated to very high temperatures. It is also used in the form of tungsten MA18972 Lead 20 mm 5 carbide (compound with carbon) for wear-resistant abrasives and cutting tools. Zinc 20 mm 5 Tungsten is an effective radiation shielding material; it’s used in the nuclear Tin 20 mm 5 industry as a non-toxic replacement for lead. Tungsten and gold have almost the same density and tungsten is used as a core material in counterfeit gold Metal Discs Set bars. Set of discs comprising aluminium, It is impractical to cast tungsten because of its high melting point. Instead, brass, bronze, copper, nickel€silver, powdered tungsten is pressed to shape and sintered at a temperature much steel, stainless steel, and zinc. lower than its melting point. The metal name is stamped onto each disc. Sold as a rod with dimensions: 6 mm diameter x 95 mm length, and weight 51 g. MA18980 Diameter Quantity £5.45 set 25 mm 8 MA160700 £18.36 ea Metal Pieces Set Materials Set, Solids Set of metal pieces each stamped with Consisting of seventeen blocks of the following materials:- softwood, the identifying letter. hardwood, paraffin wax, aluminium, iron, polystyrene, perspex, glass, slate, marble, lead and brass. Some blocks are the same materials in different sizes. Comprising: soft aluminium, hard aluminium, magnetic stainless steel, non- magnetic stainless steel, zinc, zinc plate, nickel silver, bronze, galvanised steel, mild steel, copper and brass. MA18986 Dimensions Quantity £6.76 set 50 x 25 mm 12 Metal Pieces MA19000 Type Dimensions Quantity £1.13 pk MA65500 £151.25 set MA19002 £2.15 pk MA19004 Aluminium, soft 50 x 25 mm (W x L) 10 £6.69 pk MA19006 Aluminium, hard 50 x 25 mm 10 £5.31 pk MA19008 Brass 50 x 25 mm 10 £1.64 pk MA19010 Copper 50 x 25 mm 10 £5.59 pk MA19012 Mild Steel 50 x 25 mm 10 £3.96 pk MA19014 Nickel Silver 50 x 25 mm 10 £10.64 pk MA19016 Stainless Steel 50 x 25 mm 10 £7.35 pk Tin 50 x 25 mm 10 Zinc 50 x 25 mm 10 566 …inspiring tomorrow’s scientists through practical science.

Physical Quantities PHYSICS Materials continued Strip & Wire Testing Materials Kit, Sheet Benchmark™ Strip & Wire Tester Set of twenty everyday materials: iron, steel, aluminium, wood, polythene, A combined strip and wire materials tester in one unit. The apparatus allows brass, rubber, copper, wool, nylon, cork, lead, zinc, carbon, glass, PVC, cotton, strips of various materials (e.g. plastics), or wires of different types, to be firmly cardboard, Perspex and nickel. For identifying, sorting in many different ways, clamped so that loads can be applied to test the strength and elastic properties matching to everyday artifacts and testing with magnets/electricity. of the materials. This combined apparatus replaces the two separate versions i.e. the ‘wire tester’ and ‘strip tester’. MA94074 £31.25 kit MA130100 £32.46 ea Hardness Testing Young’s Modulus Hardness Tester Kit Young’s Modulus Kit - Vernier Type The Material Hardness Tester is a simple but effective apparatus for measuring This economical version of Young’s modulus apparatus includes a 0 - 30 mm the hardness of a variety of solid materials. The apparatus consists of a rig, an scale and a moveable vernier readable to 0.1 mm. Both have bars with anvil, a punch, a delivery tube (short), a drop tube clamping screws for the wires and hooks for the tension weight and loading (long), a weight and a pin. A material sample for masses. The apparatus come supplied with a clamp for fitting and a tension testing is placed on a metal anvil at the base of weight, mass 1.3 kg approx. for the comparison wire. Complete with wires. the rig. A metal punch is then gently rested point down on the sample and a weight is dropped down the drop tube, from a set height, onto the punch, thereby creating an impact cone in the test material. Different materials can be tested and compared for hardness by measuring the width of the impact cones created. The height can be adjusted via pre- drilled holes in the main tube. Supplied with pre-cut samples of copper, brass, aluminium and Perspex for testing. Replacement samples are also available separately. MA74130 £99.75 kit MA140100 £43.94 kit SPARES & ACCESSORIES £17.95 pk MA74135 Hardness Samples: Copper, Brass, Aluminium & Plastic Hookes Law Young’s Modulus Kit - Searle’s Pattern Hooke’s Law Kit For the experimental determination relationship between a load applied to a wire and the resulting extension. Consisting of an engraved brass scale with A quality piece of apparatus to demonstrate the relationship between the a vernier reading to 0.1€mm. Complete with tension weight but without load extension of a spring and the load applied to it. Consists of a moveable masses. 120mm scale that is mounted on a stand and base. Comes complete with combined mass hanger/pointer which is connected to the suspended spring to allow easy reference to the scale. Dimensions (H x Dia.): 250 x 100mm. FO91726 £66.60 kit MA19050 £49.58 kit SPARES & ACCESSORIES £7.71 set MA19052 Young’s Modulus Set of 6 Wires Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 567

PHYSICS Vibrations & Waves Wave Models Wave Machine Wire Helix, (Slinky) To demonstrate form and propagation of longitudinal and transverse waves. Flat section steel wire in helical coil. This simple wave demonstrator rotates a set of cams that raise and lower 24 vertical rods with plastic highlighted tips for easy viewing. It is 480mm long, strong, and almost silent in operation. Lubrication is not required and students can see from both sides. Eight of the rods are turned at 90 degrees to simulate transverse wave motion. The handle is fitted with a circular scale marked in degrees of rotation. Length Diameter £9.54 ea SO120115 165 mm 75 mm Slinky Spring on Wooden Stand A Slinky-type spring for wave demonstration, with wooden storage stand. Stand helps protect spring in storage and keep in good condition. Closed Spring Dimensions (Dia. x L): 72 x 220mm. Base Dimensions (L x W x H): 150 x 150 x 355mm. SO58380 £78.81 ea SO110125 £21.59 ea Microwave Apparatus Wave Demonstrator Kit Microwave Apparatus Set This wave machine, which comes in kit form and must be self-assembled, is Microwave transmitter/receiver apparatus for the investigation of transverse designed to demonstrate the theory of waves. The kit comprises: A transverse waves, using 2.8cm wavelength. Kit includes Probe Detector for non-directional wave machine with 80 arms spaced on nylon line with detachable weights reception of the microwaves and comes complete with 12v AC/DC mains to provide an example of transverse wave propagation in which movements adapter and detailed instruction booklet illustrating various microwave of the rods create the waves; Two loaded elastic cords to illustrate transverse experiments, covering topics of wave reflection, refraction, polarization, wave motion; An extension spring with weights, for the propagation of both longitudinal and transverse waves; A teacher’s book which describes the •interference etc. experiments and gives detailed quantitative analysis. Plane polarised wave for transmitter, internally modulated with 1KHz tone, music, or no modulation. • Built in gain control for receiver, with 30 bar signal strength indicator • External outputs to data-loggers and external meters • Built in loudspeaker for the receiver, with on /off control. • Auxiliary input for external simple tones to transmit through microwaves. SO106216 £115.03 kit OP152800 £712.50 set 568 …inspiring tomorrow’s scientists through practical science.

Vibrations & Waves PHYSICS Microwave Apparatus continued Microwave Accessories Set Wave Kit Useful set of accessories for use with the microwave apparatus, including the following, mounted on feet for free standing: Used to demonstrate the properties of electromagnetic waves and as an aid to teaching the behaviour of visible light. The value of using microwave radiation • 2 Aluminium plates, 200mm x280mm for this purpose is two fold. Firstly, the concept that visible light is a small • 1 Aluminium plate, 60mm x280mm section of a much wider band of frequencies may be introduced. Secondly • 1 Perspex plate, 200mm x280mm microwave radiation shares so many common properties with visible light that • 1 Polarization grille, 200mm x 200mm many experiments can be undertaken, which would otherwise be impossible due to limitations on time or equipment costs. The kit contains both the Transmitter and Receiver. The individual units are available separately and are compatible with similar 2.8cm systems from other manufacturers. OP74690 £437.50 kit OP152802 £137.50 set SPARES & ACCESSORIES £243.75 ea OP74692 Transmitter £243.75 ea OP74694 Receiver Microwave Probe Detector Electromagnetic Waves This battery operated microwave probe detector allows the student to measure, COM Microwave Monitor plot and investigate the microwave field intensity. The probe is slightly less sensitive than the normal receiver, and is largely non-directional. The unit This monitor is ideal for checking general public exposure levels against best benefits from a built in amplifier with variable gain and meter displaying the practice standards in the vicinity of mobile/cellular phone base-station masts, relative signal strength.Output can be taken via the BNC connector either to dishes, cordless DECT phones and baby monitors, microwave ovens, and all an oscilloscope or meter. The probe detector is compatible with most 2.8cm other microwave frequency sources operating microwave educational systems on the market. between 50 and 3000MHz (3GHz). An array of 10 LED lights shows measurements from 0.7 to • 2.8cm microwave probe receiver 6.5 volts per metre (V/m), and they are further •Â€Mobile, easy to use, battery operated grouped into bands of green, yellow and red. The •Â€Built in illuminated signal strength meter green lights represent the precautionary levels set •Â€BNC terminated output for use in some European countries, the yellow and red lights represent radiation beyond that which has with oscilloscope, meter or audio now been widely reported to have adverse health effects on the general population. ••Â€€aNGmoapinn-dciornetcrtoiol nal OP94600 £141.28 ea RA75800 £186.88 ea THE ELECTROMAGNETIC SPECTRUM Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 569

PHYSICS Vibrations & Waves Resonance Tubes Microphone Probe Resonance Tube A miniature microphone is mounted at the end of a 740 mm long 8 mm diameter stainless steel probe for measurement of sound pressure levels in This apparatus is ideal for all resonance investigations in air columns locations which are hard to access. particularly the Salters MUS Activity 9. The main tube takes a high power sound wave generator unit plugged in to one end. The generator is driven The probe is intended for use with SO150200 resonance tube. It is supplied by a standard laboratory signal generator and as the frequency is adjusted with a 2 metre cable which plugs into a power supply HE110105. The power the various resonance modes are detected by increased loudness of the note. supply is required for connection to multimeters or oscilloscopes. The open pipe can be studied or a variable length closed pipe can be used by inserting the piston assembly provided. By using a higher amplitude on the generator, Kundt’s tube investigations can be undertaken. Fine cork or polystyrene dust is distributed throughout the tube and at resonance the powder gathers at the nodes. Wavelengths can be easily measured. To get a good response a closed tube is preferable, to reduce the sound levels in the laboratory while producing a measurable effect. The apparatus comes complete with two supports for the tube, sound wave generator, resonance tube, closing bung and full instructions. Dimensions (L x Dia.): 1 metre x 50mm. SO76355 £155.29 ea Frequency £124.94 ea SO150205 20 Hz-20 kHz Acoustic Probe for Resonance Tube Power Supply/Adapter Box This accessory to our Resonance Tube (SO76355) consists of a sensitive The battery box is designed for use with sensors and microphones which need microphone mounted in a acrylic tube. The apparatus enables the + 5 V DC to operate. The unit is provided with a battery compartment for characteristics of a standing wave in a pipe to be demonstrated beautifully, a 9 V PP3 battery which, via an electronic regulator, supplies the +5 V DC by plugging the probe leads into the interface box provided, which is then supply voltage for connected sensors. The unit has one input terminal with a connected to a CRO to display the waveform. Alternatively, the unit can be 5-pole DIN connector (180 degrees) for sensors and two input terminals with connected to an AC voltmeter. As the probe is moved along the tube, nodes 6-pole DIN connectors (270 degrees) for microphones. The output terminals, and antinodes can clearly be shown thus enabling wave calculations to easily for attachment to a voltmeter, datalogger, oscilloscope or other device, are be made. Requires 1 x PP3 battery (supplied). Probe Dimensions (L): 1100mm. standard 4 mm sockets. Dimensions (L x W x H): 143 x 84 x 37 mm. Box Dimensions (L x W): 60 x 50mm. Required for microphones SO150400 & SP150205, and thermopile HE110100. SO110110 £78.20 ea HE110105 £100.00 ea SPARES & ACCESSORIES £3.83 ea BA01970 PP3 Battery Resonance Tube, Premium Kundt’s Resonance Tube This resonance tube provides many options for working with sound waves: This apparatus is designed for demonstration of standing waves and for Examine standing waves in a tube open at both ends, closed at both ends or determination of the wavelengths of sound waves in air. The tube is supplied open at one end and closed at the other. with a millimetre scale and a moveable piston for changing the length of the Examine standing waves in a closed tube containing various gasses (e.g. CO2). air column. Vary the length of the half open tube by means of a piston. The apparatus consists of a Plexiglas tube with two end pieces – one (You will also need an external sound source - e.g. a 1 kHz tuning fork.) with a loudspeaker and one with a hole for the piston shaft or for the Dimensions (L x Dia.): 660 x 300mm. SO150205 microphone probe. Cable for the loudspeaker, piston and two mounts are included. A tuning fork or a loudspeaker can be used as the sound source. Microphone probe and tripod stand bases are not included. Dimensions (L x D): 1000 x 70m. SO150200 £281.25 ea SO150210 £56.25 ea 570 …inspiring tomorrow’s scientists through practical science.

Vibrations & Waves PHYSICS Rubens’ Tubes Timstar Rubens’ Tube Designed by Timstar in response to customer enquiries, the Rubens’ Tube provides memorable demonstration of standing waves. The Rubens’ Tube consists of an 10€cm diameter aluminium tube with a row of small holes drilled along the top, and a 15 W loudspeaker mounted at one end, and is supplied with instructions. Natural gas or LPG can be used, with a length of burner tubing to connect it to the supply. The speaker can be driven directly using a signal generator with power output, but a Rubens’ Tube Driver (SO180900) is recommended for best effect. See our website for more information and video links to Rubens’ Tubes in action. Designed and manufactured in the UK. BEST SELLER For a video demo, go to INFO timstar.co/RubensTube PRODUCT SO116140 Length £187.44 ea SO180150 ✓ £312.44 ea 1m 2m Rubens’ Tube Driver This unit can be used to drive the Rubens’ Tube with an audio source, such as an MP3 player, or device with a signal generator app. It features a 3.5 mm socket for an input, and includes a lead to connect it to a signal source, such as the headphone output of a mobile phone or laptop. A stereo signal is converted to mono so both channels can be heard on the Rubens’ Tube. Output is via a pair of 4 mm sockets, for connection directly the Rubens’ Tube speaker. It is powered by a plug-top power supply. NEW SO180900 ✓ £62.44 ea Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 571

PHYSICS Vibrations & Waves Ripple Tanks Ripple Tank Kit, Frederiksen Ripple Tank Kit This excellent quality Ripple Tank kit provides a comprehensive demonstration of the general properties of waves. Wave propagation phenomena are An overhead projector type ripple tank for demonstration of various wave projected onto a screen. Teachers notes and experiments are provided in a phenomena, including reflection, refraction, diffraction, and interference. superb manual. The unit comprises a shallow tank with scratch-resistant acrylic window on the bottom, supported by four adjustable legs. Two arms on the side hold an Kit comprises: eccentric motor and bar assembly, onto which either two point dippers, or a plane-wave dipper can be attached. The motor and bar assembly is suspended • Variable vibrator by springs so the vibration is not transmitted to the tank. • Ripple tank A bright point light source is held overhead, which shines down through the • Wave dampers water in the tank, and casts a shadow of the waves on the bench below. • Electronic stroboscope projection mirror The following accessories are included: Concave, convex, & rectangular • Screen (30 x 33 cm), Wave dippers, and Accessories Perspex plates; curved reflector; two large & one small barriers; two point • Now comes complete with power supply and flashing LED strobe instead dippers; plane wave dipper; hand stroboscope; banana leads; instructions. The motor requires a continuously variable 0-5 V DC power supply, and the of a rotating disc lamp requires a 6 V 20 W supply. Alternatively, the ripple tank can be driven by PLEASE NOTE: Tripod not included (ST110120). the SO180324 ripple tank & LED driver. NEW SO180320 ✓ £99.94 ea SPARES & ACCESSORIES £11.06 ea SO170322 Motor & Bar Assembly LED & Driver for Ripple Tanks This driver and LED lamp is designed for the classic overhead projection type ripple tank. It features a variable DC output for the motor, and another output for the LED. Electronics in the unit measure the oscillation of the unbalanced motor to calculate the frequency of the waves it generates, and can therefore modulate the LED to freeze or slow down the waves without the need of a stroboscope. The LED can be set to: • ON – where it is on constantly • FREEZE – where the frequency matches the waves • C USTOM – the strobe frequency is controlled independently, allowing the waves to appear to move slowly or even in reverse! Compatible with ripple tanks SO58320, SO180320, and most similar ripple tanks from other suppliers. An exclusive product developed by Timstar in partnership with IPC Electronics, designed and manufactured in the UK. NEW SO180324 ✓ £187.44 ea SO86275 £718.75 kit SPARES & ACCESSORIES £30.63 ea 572 ST110120 Retort Base …inspiring tomorrow’s scientists through practical science.

Vibrations & Waves PHYSICS Signal Generators Irwin Power Signal Generator Bench Signal Generator The new Irwin Power Signal Generator comes with an output frequency from 0.1 Hz to 100 kHz available through 6 switched ranges. Switchable outputs Sine and square wave generator. Frequency range 5Hz to 50kHz in four of Sine, Square, Triangle and Pulse. The output frequency ranges from 0.1 Hz switched ranges plus a fine control. Accuracy typically ±10%. The output to 100 kHz and is adjusted using both the six-position ‘Range Hz’ switch amplitude is continuously variable from zero to maximum 8V peak to peak with and the multi-turn rotary ‘Frequency’ control. The actual output frequency is maximum output power 1W into 8 ohms. The output is taken from two 4mm continuously monitored and shown on the blue LED Display. sockets mounted on the front panel. An illuminated on/off switch is mounted on the rear panel adjacent to a fused IEC mains inlet. Enclosed in a robust The output amplitude of the waveform ranges from zero to a maximum of 10 V metal case with a durable powder coated finish. Dimensions (LxWxH): 179 x peak-to-peak using the rotary ‘Gain’ control. 190 x 85mm. It can also be used as a stand-alone Amplifier with a Voltage Gain (Av) ranging from zero to 100 (+40 dB) via the rotary ‘Gain’ control and a frequency response of 1 Hz to 100 kHz (-3 dB bandwidth). Note: the Amplifier has an input impedance of 1 M and a maximum input voltage of 200 mV peak to peak (irrespective of the Gain setting). Manufactured in the UK. •••• Range: 0.1 Hz – 100 kHz Output 4 W into 8 ohms 0-10 V peak-to-peak Input Voltage 230 V 50 Hz NEW SI86190 £162.82 ea Signal Generator & Amplifier Provides sine, square or triangular waveforms. Frequency selection is by a switched range and continuously variable fine adjustment control. The frequency is displayed on an LED display. All connections are via pairs of labelled 4mm sockets with one of each pair connected to earth. An illuminated on/off switch is mounted on the rear panel adjacent to a fused IEC mains inlet. Enclosed in a robust metal case with a durable powder coated finish. NEW SI86185 £329.81 ea Irwin Soundbase A1€ A Microprocessor controlled Signal Generator offering frequencies from 1Hz to 35Khz. Sine, triangle, square and sawtooth waveforms are available. Complete with built in loudspeaker. Supplied complete with a plug top power supply. SI150800 £149.94 ea SI180200 Colour ✓ £353.39 ea SI180202 ✓ £353.39 ea Blue Clear Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 573

PHYSICS Vibrations & Waves Signal Generators continued Sound Demonstration Loudspeaker Frederiksen Student Function Generator This speaker is well suited to laboratory demonstrations using sound. It A high quality, simple-to-use student signal generator with a range of comprises a 10€W RMS (20 W PMPO) 8Â€Ω impedance speaker in a robust applications. beech wood and acrylic frame, with 4€mm sockets mounted on the front. Three controls: waveform, frequency, and amplitude, control the output. The The design means that the loudspeaker can be used in either a vertical or a waveform and frequency are displayed on the built-in LCD. horizontal position. Speaker diameter: 125 mm. Dimensions: 225 x 175 x Output is via a pair of 4 mm sockets. It can be used for most experiments 100€mm. involving sound or vibrations that would be carried out in school. BEST • Overload protection • LCD screen SELLER • Power supply included NEW SO106201 ✓ £68.72 ea SI180100 ✓ £274.94 ea Signal Generator Loudspeaker This has to be the best signal/function generator available for educational use! This 4W, 8 Ohm Mylar-cone loudspeaker comes mounted on an acrylic base, Developed in conjunction with physics teachers and designed specifically for so that it can be used either vertically or horizontally. The front of the speaker education, this unit provides all the functionality you need for physics teaching. has a hard protective cover with drilled holes. Dimensions (Speaker Dia.): A really useful feature for those less familiar with using signal generators is 60 mm. Overall Dimensions (H x W x D): 120 x 90 x 40 mm. that for basic use, you just operate two buttons: One for frequency and one for amplitude - that’s it! There is, of course, far more sophistication for those SO76380 £39.41 ea who require it. If you want to change waveform or to utilise the step and sweep modes, the display keeps you updated on the status of the generator. Loudspeaker Unit Unique frequency control: The frequency is set by a speed sensitive button. Turn slowly to set the display’s last digit, turn faster and the response accelerates - A compact loudspeaker unit fitted with a 10 watt, designed to work intuitively in practical experiments. 8â—¦ driver. Connection is via colour coded 4mm Drives speakers, vibration generator etc. directly: The built-in 10 W power sockets. Fitted into a durable ABS case. amplifier effortlessly drives power appliances e.g. vibration generator. The amplifier can deliver more than 1 amp for all frequencies between 0.001 Hz and 100 kHz. Step mode: In many applications you need to study a physical system at a fundamental frequency and at different multiples of that frequency. The special step feature makes this task incredibly easy. Once the fundamental frequency has been determined (e.g. of a spring connected to a vibration generator), other harmonics (or overtones) can be demonstrated by simply pressing a button, which changes the frequency to progressive multiples of the fundamental frequency. Sweep mode: The generator can sweep through a frequency range in order to discover eventual resonances. You decide the frequency range and the speed. You have the choice between a linear sweep (fixed number of Hz per unit time) and a logarithmic sweep (fixed number of octaves per unit time). Advanced Features: The generator connects to your PC through a standard USB cable and acts as a USB flash drive. Custom defined waveforms (e.g. created by means of a spreadsheet) can be saved to the generator. Sequences of settings can be programmed for automatic execution. SI30820 £43.69 ea Loudspeaker Unit A speaker unit with impedance 8â—¦, power rating 0.5W, in plastic case, with 4mm sockets. Dimensions (L x W x H): 55 x 110 x 22mm. SI130500 £661.25 ea SO86265 £36.19 ea 574 …inspiring tomorrow’s scientists through practical science.

Vibrations & Waves PHYSICS Sound continued Microphone Speed of Sound Kit A microphone unit for use with an oscilloscope to demonstrate voice waveform. Crystal microphone mounted in a moulded plastic box with 4mm connection. Comprising a FO140110 Student Timer, and two SO150400 Microphones. Impedance 1Mâ—¦. Dimensions (L x W x H): 55 x 110 x 22mm. A complete kit which allows measurement of speed of sound. Please note: squat retort bases, clapper board & metre rule sold separately. BEST NEW SELLER SO86270 ✓ £44.64 ea Dog Whistle Use this dog whistle to demonstrate the production of high frequency sound that cannot be heard by humans, but is audible to dogs. SO180200 ✓ £387.44 kit £29.94 ea SPARES & ACCESSORIES £17.06 ea SO86235 £4.86 ea ST96274 Squat Retort Base SO150450 Clapper Board Microphone Clapper Board The small size of this microphone makes it ideal for experiments with sound This clapper board is ideal for producing the sharp sound pulse required for interference. Other typical applications are measurement of sound frequencies, measuring the speed of sound. Consists of two hinged hardwood blocks. speed of sound experiments and the recording of sound by data loggers. Dimensions€(W€x€D€x€L):€27€x€50€x€300mm. The microphone is supplied with a one metre cable which connects directly to the electronic counter TI68730 or timer FO140110. It can be connected to an oscilloscope or other measuring instruments via a power supply HE110105. Supplied with a 10 mm diameter support rod. Dimensions (L x Dia.): 105 x 30mm. PLEASE NOTE: Squat Retort Base not included (ST96274). SO150450 £17.06 ea Mini-Sound Level Meter This superb, robustly built mini digital sound level meter has a wide dynamic range and gives virtually instant readings. Measuring range 40-130dB; ‘A’ frequency weighting; Fast time weighting; Precision 1/2 inch electret condenser microphone; 26mm 4 digit LCD display; Display updates every 0.5 seconds; Auto backlight in dark environments; Max/ min hold; “Over” display for out-of-range input; Low battery indicator; Auto power off after 15 minutes, preserves battery life; Can be tripod mounted; Supplied with wind muffler and battery. Frequency £66.88 ea SO150400 20 Hz-20 kHz £29.94 ea • Range: 40 to 130dB £100.00 ea • Resolution: 0.1dB SPARES & ACCESSORIES • Accuracy: ±3.5dB (94dB @ 1KHz) ST96274 • Frequency Range: 100Hz~8KHz Squat Retort Base • Power: 9V PP3 battery (supplied) BEST HE110105 Power Supply/Adapter Box • Dimensions (L x W x H): 128 x 51 x 32 mm • Weight: 131g SELLER Microphone A crystal microphone giving 10-20€mV output without batteries. Used for displaying students’ voices on a sensitive oscilloscope, or for speed of sound experiments. Fitted with 4€mm colour coded sockets. • Frequency range: 100-10,000 Hz • Impedance: 200 Ω • Sensitivity: 1 mV/Pa/kHz SO68560 £31.83 ea SO106212 ✓ £59.96 ea SPARES & ACCESSORIES £3.83 ea BA01970 PP3 Battery Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 575

PHYSICS Vibrations & Waves Sound continued Doppler Effect Unit Sonometer, Three Wire Pattern The Doppler effect unit consists of a rotating arm, powered by a 6 V DC motor which will run off a standard laboratory low-voltage power supply. The sound A hollow wooden sounding box with scales divided in mm between fixed source requires two AA batteries (not supplied). The unit is designed to work bridges over which three wires are stretched. with a microphone connected to a To one wire, a spring balance reading to 100 N x5 N is fitted and the tension computer running sound-editing exerted and measured can be finely adjusted by wing-nut. Another wire passes software such as Audacity (which is over a pulley and can be loaded as desired. A third wire is provided for free open-source software). comparison, its tension may be adjusted by means of a wrest-pin The distance between the fixed bridges is 72 cm. Complete with three movable bridges, wrest-pin key and a set of steel wires, length 1.5 m of 22, 24, and 26 SWG. The pack of replacement wires, sold separately, has steel and brass wires, each in 22, 24, and 26 SWG. Dimensions (L x W x H): 129 x 13 x 11 cm SO106208 £40.91 ea Tuning Forks Set Aluminium. Boxed set of 8. Range C.256 Hz to C512 Hz. NEW SO180350 Sonometer ✓ £74.94 ea TU16949 Quantity £44.09 set SPARES & ACCESSORIES ✓ £14.94 set 8 SO180352 Set of Six Wires Large Demonstration Tuning Fork Sonometer Pickup This large, demonstration tuning fork is really useful for demonstrating how This Sonometer pickup contains a single guitar-type magnetic pickup. When tuning forks work. Although the tuning fork is not audible, due to its low placed under a moving steel wire, such as on a Sonometer, an emf is induced frequency (around 5.4 Hz), the oscillations are easily observed visually. Made in the pickup which can be displayed on an oscilloscope. Period, frequency and from nickel-plated steel. Length: 750 mm. amplitude measurements can then be taken from the oscilloscope screen. The whole unit, constructed in clear acrylic, measures approximately 90 x 40 x 20 mm and comes with integral 4 mm sockets and instructions for use. TU170900 £34.94 ea SO76390 £29.29 ea Buzzer in a Vacuum Vessel Doppler Effect Demonstrator/Ball An effective and compact alternative to the traditional Bell in a Jar apparatus. Comprising a strong acrylic vessel, with a simple buzzer circuit. The vessel This simple apparatus gives an effective demonstration, allowing students has an outlet through which air can be evacuated using a vacuum pump (not to clearly observe the Doppler Effect. Inside the ball is a buzzer, powered by included). The buzzer is mounted on foam to reduce transmission of sound to a 9V battery. The effect is clearly demonstrated by switching the buzzer on, the vessel walls. holding the ball by the strap and rotating in a circular motion above the head. When the air is evacuated, the sound of the Alternatively, allow two students to throw the ball to each other, so that the rest buzzer is attenuated, as there is no air through of the class can clearly hear the Doppler Effect as the ball travels first towards which the sound is transmitted to the walls of and then away from them. Comes complete with strap and 9V battery. the vessel. Dimensions (H x dia): 14 x 10 cm NEW SO130515 £37.50 ea SO180800 ✓ £58.69 ea 576 …inspiring tomorrow’s scientists through practical science.

Vibrations & Waves PHYSICS Sound continued Bell in a Jar Experiment An improved version of the classic Bell in a Jar experiment. The base is fitted with a rubber sheet which ensures a good seal between the jar and pump plate, without the need for vacuum grease. The pump plate is lightweight aluminium, mounted on a heavy tripod base, with a tube connection to the central pillar to evacuate air from the bell jar on top. A stopcock allows the chamber to be sealed, allowing the vacuum to be kept when turning off the pump. The bell jar is robust acrylic which is safe in the event of implosion, measures 25 x 14 cm, and has a flat flange to ensure a good seal with the pump plate. The bell is suspended by wires to reduce conduction of sound to the bell jar. Connection is by 4 mm sockets on the top bung. The bell can be heard getting quieter as the air is evacuated. Then, by closing the tap, turning off and disconnecting the pump, and then slowly allowing the air back in, the bell can be heard getting louder, as air is required to conduct the sound. The high-quality bell operates on 4-6 V DC or AC. Requires a suitable vacuum pump, and heavy-walled vacuum/pressure tubing. NEW Bell Jars, Socket Joint Neck Simax borosilicate glass. Shoulder height is 50 mm below the height in the table. 29/32 socket. BE02400 Height Diameter £57.85 ea BE02405 £72.36 ea 200 mm 150 mm 250 mm 150 mm Air Pump Plate For use with a standard bell jar for demonstration experiments involving low pressure. The plate is made of PVC and has a vacuum connection fitting with a valve and a thumb screw for the return air. Two standard 4mm jack connectors are provided with 4mm jack connectors available inside the jar. Tube Dimensions (Dia.): 10mm. Plate Dimensions (Dia.): 210mm. Type ✓ £87.44 ea SO180500 Bell in a Jar Experiment ✓ £68.69 ea ✓ £29.94 ea SPARES & ACCESSORIES SO180505 Pump Plate SO180510 Bell Jar LINKED To help you with your ordering, see also... PRODUCTS Vacuum Pumps (page104-105) SO68500 £128.44 ea Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 577

PHYSICS Vibrations & Waves Vibration Generators & Accessories Longitudinal Wave Spring Vibration Generator, Standard Version This quality spring is ideal for producing NEW longitudinal waves with a vibration generator connected to a signal generator. Spring constant 4.7 N/m. Closed Dimensions (L x Dia.): 155mm x 27mm. SO180186 ✓ £68.69 ea SO130520 £14.00 ea Vibration Generator, Premium Piano Wire Loop A generator for producing mechanical vibrations when used with a function For use with SI30825 for demonstrating generator. The input is fed to a coil which is mounted within the field of a the relationship between frequency and the cylindrical permanent magnet. The unit is fuse protected. Locking mechanism number of vibrational nodes. Dimensions protects from shock during transit and when changing accessories. Max input (Dia.): 290mm. 6V/1A. Dimensions (L x W x H): 100 x 100 x 120mm. SI30825 £124.94 ea SI68180 £8.69 ea £2.01 pk £11.88 set SPARES & ACCESSORIES Resonance Strips Set EL06689 Fuses, Quick-Blow, Glass, 10 Steel strips giving six vibrating lengths. For use with SI30825. Fundamental frequencies at 11, 15, 21, 36 and 50€Hz can be readily observed. Interesting standing waves can be seen up to 300€Hz and heard up to 900€Hz. LINKED To help you with your ordering, see also... PRODUCTS Signal Generators (pages 97, 574) Rubber Cord SI68186 Quantity 3 For use with SI30825. For demonstrating standing waves. Dimensions (L): 2 metres. Chladni Plates For use with SI30825. A thin layer of sand is spread over the plate and resonance patterns (“Chladni” figures) can be observed at certain frequencies. The plate resonances are audible. SI68188 £2.44 ea SI68182 Type £11.19 ea SI68184 £16.85 ea 578 Square Round …inspiring tomorrow’s scientists through practical science.

Vibrations & Waves PHYSICS Stroboscopes Mini Stroboscope BEST Hand Stroboscope, Simple A top quality mini strobe unit offering SELLER A black hardboard disc with 12 slots and finger excellent light intensity for its size and hole, pivoted on a ball bearing mount which a variable flash rate up to 10 flashes acts as a handle. Dimensions (Dia.): 255mm. per second. Supplied with adjustable Slot Dimensions (L x W): 50 x 3mm. mounting bracket. 230V/14W. Dimensions (L x H x W): 55 x 85 x BEST 125mm. SELLER SO76415 ✓ £19.64 ea OP11898 ✓ £12.70 ea Stroboscope Xenon Stroboscope, Handheld This stroboscope has a wide range of applications, having high accuracy and a digital readout of selected flash rate. Applications include dynamics This lightweight mains powered stroboscope can also be used to measure the experiments, vibration modes in wires and sheets, measuring speeds and rotational speed of gears, fans, pumps etc. Simply point at the rotating object, frequencies and demonstrating persistence of vision. Triggering is by internal synchronise its flash rate to the rate of rotation and the reading is read as switching or by an externally applied waveform. Built into a robust metal case RPM. For frequency in hertz, simply divide the RPM value by 60. Weight: 1€kg. with a durable powder coat finish. An illuminated on/off switch is mounted on Dimensions€(L€x€W€x€H):€210€x€120€x€120€mm. the rear panel adjacent to a fused appliance inlet. The rear panel also carries the flash rate control and 4mm sockets and switch for external synchronisation. • Lightweight torch design with handle • 4 digit LED display located in front of the handle •Specification: • Rear control panel with on/off power button, range selection and coarse Flash Rate: 1 to 10 flashes/sec, 10 to 100 flashes/sec, 100 to 250 flashes/sec. and fine adjustable flash rate • Display: 13 mm 7 segment LED. • Range: 100 to 10,000 FPM • Flash Power: 5 W (mean). • High intensity 6500K xenon white flash tube with an 80° beam angle • Accuracy: ±2 % on each range. • Impact-resistant ABS case with standard 1/4” camera bush for tripod • Flash Duration: 12 µs. • Electrical Supply: 220-240 V AC 50-60 Hz. mounting • Dimensions (L x H x W): 255 x 220 x 110mm • Weight: 3.4 kg • Microprocessor controlled LSI circuit and crystal control time base • Continuous use from 5 to 30 minutes depending on Flashes Per Minute • (FPM) range Supplied with 1.75 metre detachable power lead SO96194 £319.76 ea SO130530 £241.66 ea Stroboscope, Premium Digital Xenon Stroboscope A versatile instrument employing a high intensity xenon flash tube which gives a brilliant white light, particularly suitable for photographic purposes. With the This digital xenon stroboscope is a lightweight, sturdy and compact instrument stroboscope and a camera, free fall, projectile trajectories etc. can be analysed. which features a digital, variable flashing rate adjustment and external triggering facility. The bright xenon tube makes it ideal for educational uses Harmonic motion like standing waves on a string can be “frozen” or made such as wave, motion and vibration experiments. Supplied with mains lead. to move in slow motion. Another standard application of the stroboscope Specifications: 60 to 18,000 rpm, 1 to 300 Hz, External triggering signal, is determining rotational speeds. The flash rate can be regulated from 1 to Power supply: 240 V AC, 50 Hz. Dimensions (L x H x W): 215 x 140 x 150mm. 300 flashes per second, corresponding to 60 to 18,000€rpm. Digital reading with switch for impulses per second, rpm and external triggering. Input terminals for external triggering and output terminals for internal trigger signal. Equipped with a threaded hole in the bottom that fits standard photo tripods. Dimensions€(W€x€H€x€D):€180€x€240€x€120€mm. SO110120 £281.25 ea SO150100 £424.94 ea Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 579

PHYSICS Oscilloscopes Picoscopes A Dual Channel Picoscopes B This range of PicoScopes are extremely versatile, with an Oscilloscope, spectrum analyser and arbitrary waveform generator in each model. Their compact size makes them extremely portable and the cases are very robust. Connections are simple, comprising, channel A, channel B, signal out and USB socket. Dimensions (L x W x H): 100 x 135 x 45mm. The USB (2.0) provides power, eliminating the need for an external power supply. The USB connection facilitates high speed data transmission. The Windows software supplied with each PicoScope is very simple to use. It features an auto setup function which reduces setup time to a few minutes. Updates to the software are provided free of charge. Both models have input ranges of: ±50 mV, ±100 mV, ±500 mV, ±1 V, ±2 V, ±5 V, ±10 V ±20 V. Specification: Model: Picoscope 2204 • Bandwith (MHz): 10 • ETS (GS/s): 5.0 • Sampling rate (MS/s): 100 • Scale (ns-s/div): 2-50 Model: Picoscope 2205 • Bandwith (MHz): 20 • ETS (GS/s): 10.0 • Sampling rate (MS/s): 200 • Scale (ns-s/div): 1-50 Signal Generator Output: • Buffer Size: 4k words • Vertical Resolution: 8 bits • Output Range: ±125 mV to ±2 V pk-pk with ±1 V offset • Output Resistance: 600 Ω • Clock Frequency: 2 MHz • Bandwidth: DC to 1 MHz EL81422 Type £156.19 ea BEST EL81424 ✓ £249.94 ea A PicoScope 2204 SELLER B PicoScope 2205 580 …inspiring tomorrow’s scientists through practical science.

Oscilloscopes PHYSICS Picoscopes continued Digital Oscilloscopes PC Oscilloscope PC Oscilloscope, 60 MHz A PC based oscilloscope with all the features of a standard oscilloscope plus A high bandwidth PC oscilloscope offering all the features of a standard the benefits of compact size and inclusive software which is simple and intuitive oscilloscope but with the added benefits of compact size, portability and easy to to use. use software (included). Minimum PC Requirements: Pentium (R) 4 2.4 GHz processor; 1GB memory; Minimum PC requirements: Pentium(R) 4 2.4 GHz; 1 GB RAM; 1 GB minimum 1GB minimum disc space; Display Resolution: 1024 x 768; USB2.0 port disk space Operating system: Windows XP, Windows Vista, Windows 7 OS: Windows XP/Vista/7/8 Ports: USB 2.0; USB 1.1 Display Resolution: 1024 x 768 • USB isolation - less signal inference, more PC protection • USB powered • Ultra-thin body design for easy storage & portability OS150000 £156.25 ea EL170110 £312.50 ea Bandwidth 25 MHz Bandwidth 60 Hz Channel 2+1 (external) Sample rate 500 MS/s Sample Rate Record length Horizontal Scale 100 MS/s Trigger options 10 M Rise Time 5 ns/div - 100 s/div edge, video, slope, pulse, and alternate Record Length Input Coupling max 14 ns Input Impedance 5k Max input voltage Channels Isolation AC DC GND DC Gain Accuracy 1 MO 2 %, in parallel with 10 pF-5 pF Vertical Resolution Vertical Sensitivity 400 Vpk-pk Trigger type 50 Hz 100:1, 100 MHz 40:1 Trigger mode Trigger level 3% Acquisition mode 8 bit Waveform Maths 5 mV/div - 5 V/div Lissajou figure bandwidth Edge, Pulse, Video, Slope, Alternate Lissajou figure phase difference Auto, Normal, Single Common interface 25 MHz Power Sample, Peak, Detect, & Average Dimensions +, -, x, /, FFT Weight full bandwidth 3° USB 2.0 5 V 1 A <1.5 W 170 x 120 x 18 mm 0.26 kg Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 581

PHYSICS Oscilloscopes NEW Digital Oscilloscopes continued A B SDS1022 Oscilloscope Digital Storage Oscilloscope A digital storage oscilloscope, designed with simplicity in mind. The vast array 2 Channel 25 MHz Digital Storage Oscilloscope from Uni-T, designed of advanced measuring options found in most digital oscilloscopes is mostly specifically for analysing high-speed electrical signals and ideal for many omitted, leaving only the essential features required in schools. This means the advanced applications in education, research and development. Packed with unit is very accessible for students and teachers alike. superb features, including a bandwith of 25 MHz, this unit stores and analyses the signal digitally rather than using analogue techniques, and is now the most • 7” colour screen (800 x 600) common type of oscilloscope in use because of the advanced trigger, storage, • 20 MHz Bandwidth display and measurement features which they typically provide. • Sample rate: 100 MS/s • Dual channel Specifications and Features: • Automatic measurement • Dimensions: 301 x 152 x 70 mm • Model: UDT2025C • Bandwidth: 25 MHz • Sample range: 250MS/s • Vertical sensitivity: 2 mV/div to 10 V/div • Record length (max): 2x 512k • Sample rate: Real time 250 MS/s • Trigger type: Edge, Pulse, Video and Alternate • Ports: Standard: USB Device, USB Host, RS232. Optional: LAN • Display: 64k, Full colour LCD, 320 x 240 • LCD Size: Diagonal 145 mm (5.7 inches) • Power: 100 - 240 V AC • Dimensions (L x H x D): 330 x 165 x 165mm • Includes manual OS180100 A ✓ £243.75 ea OS130500 B £437.50 ea 582 …inspiring tomorrow’s scientists through practical science.

Oscilloscopes PHYSICS Digital Oscilloscopes continued Digital Storage Oscilloscope, 60mHz Colour Digital Oscilloscope The Voltcraft DSO-1062D 2-Channel Oscilloscope is an entry-level model in the field of digital storage oscilloscopes. The device has two channels with a The SDS5032E is a general purpose 2 channel digital oscilloscope with a bandwidth of 60MHz and a real-time sampling rate of max. 1 GS/s and a large 200mm colour display, making it ideal for education and industrial memory depth of 512 kpts. environments. Complete with USB output to PC. Up to 1Mpts are available if only one channel is used. The DSO-1062C is Specifications and Features: almost unbeatable value for money with its large 17.7cm 800 x 480 pixel colour display and USB host for storing data on an optional stick. • Bandwidth: 30MHz The DSO-1062D is completed by a USB interface, multilingual Help menu, • Sample Rate (real time): 250MS/s extensive trigger possibilities, automatic measuring functions including FFT and • Horizontal Scale (s/div) 4ns/div~100s/div, step by 1~2~4 standard software included in the delivery. • Rise Time (at input, typical) ≤11ns Specifications and Features: • Channels: 2 + 1 (external) • Display: 20cm (8”) colour LCD, TFT display, 800 x 600 pixels, • 60MHz bandwidth • 1 GS/s real time sampling rate, equivalent to 25GS/s 65535 colours • Supplied with Voltcraft DSO-1062D, 2 probes (each 1:1 / 10:1), Power • Input Impedance: 1MΩ ± 2%, in parallel with 15pF±5pF cord USB cable, software, detailed instruction manual (English), Quick • Channel Isolation: 50Hz: 100: 1, 10MHz: 40: 1 • Max Input Voltage: 400V (PK - PK) (DC+AC, PK - PK) • Start Guide (Multilingual) • DC Gain Accuracy: ±3% 2 probes (each 1:1/10:1), Power cable, USB cable, Software, Detailed • Record Length: 10K user manual (English), Quick instructions (Multilingual). • DC Accuracy (average): Average≥16: ± (3% reading + 0.05 div) for △V • Probe Attenuation Factor: 1X, 10X, 100X, 1000X • Accuracy: ±3% • Sample Rate / Relay Time Accuracy: ±100ppm • Bandwidth: 60MHz • Input Coupling: DC, AC, and GND • Calibration possible to: ISO / DKD • Vertical Resolution (A/D): 8 bits resolution (2 Channels simultaneously) • Channel type: 2 • Vertical Sensitivity: 5mV/div~10V/div (at input) • Dimensions: 313(W) x 142(H) x 108(D)mm • Trigger Type: Edge, Pulse, Video, Slope • Display type/resolution: 800 x 400 pix • Trigger Mode: Auto, Normal, Single • Displays: LCD • Trigger Level: ±6 divisions from screen centre • Input coupling: DC/AC/GND • Line / Field Frequency (video): NTSC, PAL, and SECAM standard • Input impedance: 1MΩ • Waveform Math: +, -, x, ÷, FFT • Input voltage range: 2mV to 100V (DC/ACpp) • Waveform Storage: 15 waveforms • Interfaces: 1x USB • Lissajous Figure Bandwidth: Full bandwidth • Mathematics functions: Pk-pk, max, min, effective value, cyc. RMS, Hz, • Lissajous Figure Phase Difference: ±3 degrees • Communication Interface: USB, USB flash disk storage, Pass / Fail, LAN, period, rise/fall time, pos/neg half-wave VGA (optional) • Max. power consumption: 30W • Memory depth: 1 MPts (single), 512 kPts (dual) • Power Supply 100V - 240V AC, 50/60Hz, CAT II •• POopweerar tsiuopnptlyyp:e1:0C0HV1A,CCHto2,2d4u0aVl,AXCY • Power Consumption <18W • Resolution: 8-bit • Fuse 2A, T class, 250V • Sampling rate: 1GS/s (single mode), 500 MS/s (dual mode) • Battery not supported • Screen size: 17,7cm • Dimension (WxHxD) 348 x 170 x 78 (mm) • Timebase range: 4ns to 40s/div • Weight: 1.50 kg • Triggering: DC, AC, HF, LF, noise, EXT, EXT/5 • Type (manufacturer type): DSO-1062D BEST • Vertical deflection: 2mV to 5V/div • Weight: 2kg SELLER EL101460 ✓ £368.75 ea EL160650 £431.25 ea Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 583

PHYSICS Oscilloscopes CROs Dual Trace Oscilloscope Oscilloscope, Single Channel This dual channel oscilloscope offers exceptional value in terms of price and Our single channel value oscilloscope features an 8 x 10 division screen, X-Y performance. With frequency bandwidth of 10 or 20 MHz bandwidth and modes and built in probe calibration signals. Triggering modes are Auto, Norm sensitivity ranges of; 1 mV/div - 1 V/div or 5 mV/div to 5 V/div. Display size: and TV and X1/X10 probes are included. 150 mm diagonal flat screen. Specifications and Features: Specifications and Features: • Single channel, 10 MHz • Screen size 8 x 10, 1 div = 6 mm • Dual channel, 20 MHz • Vertical input 5 mV - 5 V/div • High sensitivity • Horizontal 0.1 S/div - 0.1 uS/div • Full 80 x 100 mm rectangular screen with scale illumination • Triggering mode Auto, Norm, TV • Excellent triggering facilities • Trigger source INT, LINE, EXT • Ideally suited to education applications • Input voltage 110/220 V +/- 10 % AC • A well presented front panel ensures quick and easy operation • Dimensions (W x L x H): 220 x 270 x 90mm • Variable hold-off function • Weight 3 kg • Convenient X-Y operation mode allows phase difference between • measurements between two waveforms BEST Carrying handle, which may be locked into any position, also doubles as SELLER • a tilt stand Supplied complete with mains lead and comprehensive instruction manual • Probes not included • Dimensions (L x W x H): 324 x 398 x 132mm • Weight: 7.5 kg EL101464 ✓ £212.44 ea Oscilloscope Accessories BNC Connecting Leads & Adapter Leads come ready assembled with moulded-on strain reliefs. EL81502 £618.75 ea Microphone A microphone unit for use with an oscilloscope to demonstrate voice waveform. Crystal microphone mounted in a moulded plastic box with 4mm connection. Impedance 1Mâ—¦. Dimensions (L x W x H): 55 x 110 x 22mm. EL18512 Type £4.94 ea BEST EL18513 £7.44 ea EL18514 BNC Plug to BNC Plug £10.31 ea SELLER EL18516 BNC Plug to Crocodile Clips £6.56 ea BNC Plug to Stackable 4mm Plugs BNC Plug to 4mm sockets 3.5 mm to 4 mm plug leads A 3.5€mm headphone plug connected to 2x€4€mm plugs, for taking audio output from an MP3 player, phone etc. Approximately 65€cm long. EL160100 £8.69 ea SO86270 ✓ £44.64 ea 584 …inspiring tomorrow’s scientists through practical science.

585 PREPROOM SUPPLIES Brushes586 Storage595 Cleaning Products 587 Lubricants596 Draining594 Soldering597 Lab Expert Stock Database 594 Hand Tools 599 Staffroom Essentials 595 Power Tools 606

PREPROOM SUPPLIES Brushes Artist Brushes Cylinder Brushes Squirrel Hair in metal mount on wood handle. Nylon with fan shaped end, on strong wire handle. Height Length Diameter BR03455 120 mm 650 mm 65 mm £3.64 ea BR03460 141 mm 650 mm ✓ £3.96 ea Type 75 mm BR03540 Size No. 4 ✓ £2.80 ea Flask Brushes BR03545 Size No. 6 £3.44 ea Bristle on curved wire. Curved head with hinged joint and rubber covered stem Paint Brushes on wooden handle. Bristle, flat form in metal mount on wooden handle. BR03465 Height Length Diameter £7.78 ea 100 mm 100 mm 50 mm BR03550 Width £3.04 ea Test Tube Brushes BR03552 ✓ £3.99 ea 12 mm Fan shaped end on wire handle. 25 mm Beaker Brushes Type For Quantity Bristle, loop form on wooden handle. Bristle 10-12 mm tubes 10 Nylon 10-12 mm tubes 10 BR03470 Bristle 16-25 mm tubes 10 ✓ £6.61 pk BR03475 Nylon 16-25 mm tubes 10 £6.46 pk BR03480 £8.82 pk BR03485 £6.83 pk Test Tube Brushes Nylon with cotton tip on wire handle BR03400 Length Diameter £2.58 ea 150 mm 70 mm Bottle Brushes BR03490 For Quantity ✓ £8.84 pk BR03495 £10.10 pk On wire handle. 12-16 mm tubes 10 19-25 mm tubes 10 Tube Brushes Nylon, with 70mm long brush in centre of wire. BR03410 Type Height Length Diameter ✓ £2.36 ea Length Diameter Quantity BR03415 £2.30 ea BR03420 Bristle 64 mm 300 mm 45 mm £2.59 ea 400 mm 3 mm 10 BR03425 Nylon 64 mm 300 mm 45 mm £2.30 ea 600 mm 6 mm 10 BR03435 Bristle 75 mm 350 mm 50 mm £2.33 ea Nylon 75 mm 350 mm 50 mm Nylon 100 mm 400 mm 65 mm Burette Brushes BR03500 ✓ £13.74 pk BR03505 £14.01 pk Bristle on wire handle, to fit all size burettes. Pipecleaner Height Length Diameter Quantity BR03512 Length Diameter Quantity £7.95 ea 100 mm 100 mm BR03514 ✓ £2.44 pk BR03445 19 mm 10 £15.76 pk 15 metre 3 mm 1 150 mm 3 mm 100 586 …inspiring tomorrow’s scientists through practical science.

Cleaning Products PREPROOM SUPPLIES Dustpan & Brushes Buckets Dustpan and Brush Bucket Plastic. Polythene with handle. BU03605 Capacity £3.80 ea 9 litres CL04268 £2.44 ea Bucket Bins Black polythene with strong wire handle and Waste Bin, Swing Top wooden hand grips. Polythene with rocking flap cover in the removable hood. Dimensions: (L x D x H) 330 x 330 x 710mm high. Capacity 50L. BU03610 Capacity £5.07 ea 14 litres Buckets White polypropylene with snap-on lids, ideal for storage or collecting samples. WA17450 £18.69 ea Capacity Bin Liners BU03620 2.5 litres ✓ £2.49 ea BU03622 5 litres £3.11 ea Bin Liners, Black BU03624 10 litres £5.74 ea Light duty black refuse sacks for general purpose use. Supplied as a roll of Cloths 10 bags. Dimensions: 457 x 737 x 965mm. Cleaning Cloths Wypall cleaning cloths made from ‘Hydroknit’, which is a fast absorbing material. Sold as a pack of 50 cloths WA170800 £2.25 pk CL160100 £7.11 pk Waste Paper Bin Liners, White Cleaning Cloths Biodegradable white pedal bin/waste bin liners. Liners will decompose J Cloth’ strong, durable cleaning cloths, completely, leaving no harmful residues. Supplied as a roll of 50 bags. suitable for washing, dusting and polishing. Rapid drying hygienic wipes. Dimensions: 280 x 457 x 457 mm Available as a pack of 50. BEST SELLER WA170810 ✓ £1.69 pk CL160750 £11.70 pk Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 587

PREPROOM SUPPLIES Cleaning Products Cloths continued Cotton Wool Cotton Wool, Absorbent Cleaning & Spillage Cloth Roll Absorbent white. Hospital quality. Roll of double creped, strong, soft wipes with good absorbency. Great for cleaning and cleaning up spills, these cloths are available in a roll of 400 sheets with perforations between each sheet for easy tearing. Individual sheet size 30 x 34cm. CL150202 £25.06 ea CO05000 Quantity £7.19 ea 500 g Tea Towels, Assorted Cotton Wool, Non-Absorbent Absorbent fabric tea towels. High quality, machine washable, non-fray. Check Non-absorbent white. In packs of 500g. design, size 700 x 740mm, pack of 10 assorted colours. CL150204 Quantity £19.35 pk CO05005 Quantity £19.06 ea 10 500 g Drying Cloths Cotton Wool Balls, Absorbent (Glass Cloths). Linen. Soft, absorbent cotton wall balls, useful for cleansing, germinating seeds etc. Made from 100 % pure cotton and sold as a pack of 100 balls. CL04230 £2.13 ea CO170100 £1.94 pk Dusting Cloth Cotton Wool Buds Yellow cotton, closed texture. Size: 500 x 400 mm. CL04240 Quantity £6.19 pk CO05032 Quantity £2.17 pk 5 200 Dish Cloths Swabs Open mesh. Pack of 10. Swabs, Non-Sterile Wood shafts non-sterile swabs with cotton tips. CL04245 £8.70 pk Quantity £1.31 pk CO120100 100 588 …inspiring tomorrow’s scientists through practical science.

Cleaning Products PREPROOM SUPPLIES Hand Cleaners Dishwasher Supplies Nail Brush Dishwasher Tablets, ‘Finish’ Traditional shape bristled nail brush for removing These Finish dishwasher tablets deliver a powerful clean even in the toughest dirt and grime from under nails. conditions leaving pots, pans and dishes spotlessly clean. Each tablet contains powerful ingredients, which lift off grease and dirt easily and feature a rinse BR161111 £1.00 ea aid technology to deliver a great shine and leave a fresh smelling fragrance. Washing Up Washing Up Liquid, Economy • Powerful cleaning even on the toughest food • stains Economy high strength washing up liquid. Dual action rinse and salt action delivers great • Cuts through grime and grease shine • Gentle formula for skin softness • Fresh original fragrance • Fresh smelling fragrance • 5 litre bottle • Individually wrapped tablets CL150400 Quantity £19.58 pk 52 Dishwasher Salt CL150102 Quantity £8.16 ea 5 litre Fairy Original Hand Dish Wash CL04227 Quantity £2.96 ea 2 kg Fairy washing up liquid lasts longer and cleans better than most other brands. Specially formulated to cut Dishwasher Salt , ‘Finish’ through grease and dirt, only a small amount is ever needed. Lasts up to 50% longer than many other Finish Dishwasher Salt is 99.99% pure and granulated for use in dishwashers. brands. Important to use in hard water areas to prevent the build-up of deposits. The purity ensures that the built-in water softener works effectively to protect your • Fairy Original Washing Up liquid dishwasher and prevent spots and watermarks on your dishes and glasses. • Lasts up to 50% longer than other brands • Super concentrated formula means a little goes • Dishwasher salt for domestic and professional use • Effectively softens your water a long way • Boosts cleaning performance of your detergent • Purity ensures the very best results and protects your dishwasher • Cuts through grease and dirt with ease • Prevents unsightly spots and water • Leaves utensils sparkling and fresh • 5 litre economy pack marks CL150104 Quantity £30.00 ea 5 litre Washing Up Brush Tough bristled washing up brush for general washing up duties. CL150402 Quantity £3.49 ea 2 kg £5.69 ea BR160100 £1.24 ea Rinse Aid, Ecover Scourers Ecover rinse aid, for use in dishwashers to give a shiny finish without streaking or residue. 500 mL Abrasive scourers for removal of grime and burnt bottle. residues etc. Available as a pack of 10 foam backed scourers. SC160100 £3.90 pk WA160124 Scouring Pads, Heavy Duty NEW Decomatic Pack of 4 heavy duty reusable A phosphate free, liquid surfactant specially formulated scouring pads. for use in laboratory glassware washing machines. It is alkaline. Not suitable for use on non-ferrous metals. SC180102 ✓ £2.44 pk CL04190 Quantity £42.16 ea 5 litre Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 589

PREPROOM SUPPLIES Cleaning Products Multipurpose Cleaners Disinfectant Decon 90 Pine. A surface acting cleaning agent which is phosphate free, biodegradable, totally rinseable and non-flammable. Not suitable for use on non-ferrous metals. Use a solution of strength between 2 % and 5 % in water, and leave to soak for 2-24 hours. CL04220 Quantity £6.41 ea 5 litre CL04200 Quantity £17.51 ea Steri49plus+ Floor Cleaner CL04201 £69.20 ea 1 litre Steri49 Plus Floor Cleaner has been developed from the original Steri49, giving 5 litre a wider range of cleaning properties that can be used on a greater number of floor surfaces, to provide an excellent finish on the treated surfaces, either Teepol from buffing or mopping. Steri49 Plus completes a number of tasks with one treatment - it will clean and deodorise in one operation, kills bacteria, and will Concentrated detergent. leave a pleasant lemon aroma. With a dilution rate of 1:100, Steri49 Plus is not only a very efficient floor cleaner but it provides a cost effective solution to all floor cleaning applications. For use on Floor Surfaces: Vinyl; Terrazzo; Altro; Tiles; Rubber. ••••••• C1LFABCeuu0llocealf0nlofavys%thenactossiooBnlamaishFonrlipdnegedleomheiagdIo&nfreriarntnoiNdtiwdfasaroohinabtnrhtglisesFrEealUsanmicBnemiooaacpfibtedelreeractRileoegnaunliantgio. ns CL04205 Quantity £9.99 ea CL130665 Quantity £18.76 ea CL04206 £37.44 ea 5 litre, lemon scented 5 litre 20 litre £3.88 ea £29.39 ea Virkon Disinfectant Sterizar Hard Surface Cleaner A Virucidal disinfectant that kills all 17 virus Sterizar is an alcohol free advanced Hard Surface / Multi Surface cleaner families. It is an excellent bactericide and and sanitiser that is manufactured to contain one of the fastest acting and fungicide and can be applied in powder most powerful germ killing products available today, being effective within form direct to spillages of blood and other 30 seconds and killing 99.999% of bacteria, yet contains no irritants within its bodily fluids. It easily dissolves to make an formulation. inexpensive liquid disinfectant. Using the latest advanced barrier technology Sterizar not only provides rapid CL04222 Quantity kill against bacteria and viruses, but provides a residual barrier onto the CL04223 surface that continues to work for at least 30 days after the initial application. 50 g For use on: Work surfaces; Painted & varnished surfaces; Hand basins & taps; 500 g Mirrors & glass surfaces; Ceramics; Vinyl; Plastic; Soft furnishings; Formica. Bleach • Kills 99.999% of Bacteria in 30 seconds – including MRSA & E.Coli, ••• RSKKeaiillmlllmss aNFoiunnonsergolelivafi&freucAstligveaefor up to 30 days from one Domestic, thick. ••••••••••• FTCpCSENaAH1eurkHp0laoaoacsilp0nnnllottdayLel%thhiielbasdcccoaavaceiaobneflrefttmoiemisuelfrooro,tssopnefinddefnufleobiideeola6sag&ditan.trcPo5rorfttPaneie-ptwEsdoarl7aiaainnart.nebnht3fsi&qlttlesEaiuaskUmoeinrilrdemlbmsdaiiaoessnbmcdinmilideoecaealnllls-srtieongxsuticrluamtioennsts CL04215 Quantity £6.80 ea CL130670 Quantity £6.44 ea 5 litre CL130675 £24.11 ea CL130680 750 mL trigger spray CL130685 5 litre refill £6.70 ea 750 mL trigger spray, lemon scented £25.71 ea 5 litre refill, lemon scented 590 …inspiring tomorrow’s scientists through practical science.

Cleaning Products PREPROOM SUPPLIES Multipurpose Cleaners continued Sterizar Hand Gel Sanitiser Lipsol Concentrate Detergent Sterizar Hand Gel is an alcohol free advanced hand sanitiser that is manufactured to contain one of the fastest acting and most powerful germ A surface active cleaning agent and radioactive decontaminant for glassware, killing properties available today, being effective within 30 secs and killing ceramics, rubber, plastics, stainless steel and ferrous metals. Phosphate and 99.999% of bacteria, yet still providing a soft and safe feel to the skin. enzyme free, fully rinsable and free from chlorine bleaches. Recommended Using the latest Advanced Barrier for cleaning by soaking and for use in ultrasonic baths. Lipsol has been Technology, Sterizar not only provides rapid independently tested and shown to be non-hazardous and meets the latest kill against Bacteria and viruses, but provides requirements for biodegradability. For a residual barrier onto the hands that normal cleaning use a dilution of 2-5%. A 5% continues to work for at least 6 hours after solution has a pH of 10.5. the initial application. CL51200 Quantity £37.31 ea CL130600 Quantity £2.55 ea 5 litre CL130605 £5.90 ea CL130610 100 mL £28.00 ea 500 mL 5 litre refill Hand & Surface Disinfectant Spray Sterizar Hand Foam Sanitiser Developed by doctors and used by professionals, this NHS approved and Sterizar foamer solution is an alcohol free advanced hand sanitiser that is alcohol free Hand & Surface Disinfectant Spray can be used on all kinds manufactured to contain one of the fastest of surfaces, equipment, food preparation areas and skin. Kills Swine Flu acting and most powerful germ killing properties and MRSA. Dermalogically tested to be safe on skin and contains a unique, available today, being effective within 30 secs and patented biocidal formulation, containing 6 biocides all working independently killing 99.999% of bacteria, yet still providing a of each other to reduce the risk of germs developing soft and safe feel to the skin. a resistance. Not suitable for use on dirty or soiled hands - these must be cleaned first by washing or Using the latest Advanced Barrier Technology using wipes to remove the dirt. The spray can then be Sterizar not only provides rapid kill against applied for disinfecting purposes. bacteria and viruses, but provides a residual barrier onto the hands that continues to work for • MRSA killed within 10 seconds - works for a at least 6 hours after the initial application. • further 72 hours CL130615 Quantity £3.35 ea Kills a vast range of germs and bacteria CL130620 £5.86 ea including MRSA, Staphylococcus aureus, Listeria, CL130625 50 mL £21.11 ea Salmonella, HIV, Herpes, Influenza (H5N1), 600 mL 5 litre refill • Hepatitis B, Hepatitis C and Norovirus. Proven to kill 99.999% of germs within Sterizar Hand Foam Sanitiser, Scented • 10 seconds, goes on working for 24 hours. Sterizar foamer solution is an alcohol free advanced hand sanitiser that is Tested to European Standard EN1276 and prEN manufactured to contain one of the fastest acting and most powerful germ killing properties available today, being effective within 30 secs and killing • 12054. 99.999% of bacteria, yet still providing a soft and safe feel to the skin. Super fast, super effective formulation - making the Disinfectant Spray one of the most effective Using the latest Advanced Barrier Technology Sterizar not only provides rapid products on the market. kill against bacteria and viruses, but provides a residual barrier onto the hands that continues to work for at least 6 hours after the initial application. • No bleach used in the formulation. • Skin safe and dermatologically tested. • Supplied as a spray bottle Quantity £7.28 ea SA106014 500 mL Hand Cleaners CL130635 Quantity £6.29 ea 600 mL Clinell Hand Sanitiser Gel Sterizar Antibacterial Hand Wash Using a formula developed by doctors, the Clinell range now includes a new hand sanitiser gel which contains natural moisturisers, aloe vera and green tea Sterizar antibacterial sanitising hand wash provides a skin wash that has an extract to leave hands feeling clean and refreshed with no sticky residue - but immediate kill rate of 99.999% of bacteria and viruses, cleans your hands, still has a 99.999% kill rate. The unique blend of 70% alcohol and biocides it yet even after rinsing and drying still provides 2 hours of protection against contains give a superior level of effectiveness bacteria. against germs. The two sizes available both come supplied in a pump action bottle. The formulation is alcohol free, contains no irritants, and leaves your skin feeling soft and protected against harmful bacteria. CL110750 Quantity £4.94 ea CL130650 Quantity £5.90 ea CL110752 £7.28 ea CL130655 £19.55 ea 250 mL 500 mL 500 mL 5 litre refill Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 591

PREPROOM SUPPLIES Cleaning Products Hand Cleaners continued Sterizar Hard Surface Wipes Antibacterial Liquid Soap Sterizar Hard Surface Wipes have the same properties, specification as Sterizar Hard Surface Cleaner (CL130670) and are available as a tub of 200 wipes. Cussons Pure antibacterial hand wash dispenser. CL150100 Quantity £2.13 ea CL130690 £9.38 ea 500 mL dispenser Handwash, Anti-Bacterial Surface Disinfectant Wipes This Antibacterial Hand Wash is an unperfumed hand soap that kills germs Surface disinfectant wet wipes, perforated for ease of dispensing. and leaves hands feeling fresh, clean and supple. Effective against bacteria, Non-flammable, non-toxic, food and skin safe. Individual wipe size: it has added moisturisers that are kind to the skin and suitable for a range of 20cm x 23.5cm. Tub of 1000 wipes. skin types. The easy to use pump action dispenser ensures a clean and efficient release of liquid, making it economical and cost effective. • Unperfumed antibacterial hand wash • Kills 99.9% of bacteria • Handy dispensing pump • Suitable for all skin types and ages • Added moisturisers leaves hands soft • Leaves hands hygienically clean and fresh CL150200 £22.08 ea CL150105 Quantity £5.96 pk Universal Sanitising Wipes 2 x 250 mL dispensers Developed by doctors and used by professionals, these NHS approved and Wipes alcohol free Universal Sanitising Wipes can be used on all kinds of surfaces, equipment, food preparation areas and also skin. Kills Swine Flu and MRSA. Bactericidal Wipes Dermalogically tested to be safe on hands, these antimicrobial wipes act as For disinfection of hard surfaces. both disinfectant and detergent meaning they are one of the most effective In tubs of 160 wipes. Dimensions: antimicrobial wipes on the market. 200 x 220mm. • MRSA killed within 10 seconds - works for a further 72 hours • Kills a vast range of germs and bacteria including MRSA, Staphylococcus aureus, Listeria, Salmonella, HIV, Herpes, Influenza (H5N1), Hepatitis B, Hepatitis C and Norovirus. • Proven to kill 99.999% of germs. • Tested to European Standard EN1276 and prEN 12054. • Supplied as a re-sealable pack of wipes. CL04262 £9.73 ea Computer Screen & Cleaning Wipes Computer and laptop wipes, suitable for cleaning screens, monitors, screen filters etc. Sold as a re-sealable tub of 100 wipes. CL160600 £2.00 pk Quantity £13.69 pk SA106006 200 592 …inspiring tomorrow’s scientists through practical science.

Cleaning Products PREPROOM SUPPLIES Wipes continued Paper Towels Child Friendly Antibacterial Wipes Paper Towels Developed by doctors and used by professionals, these NHS approved alcohol A good quality single ply, 40gsm C-Fold paper hand towel at a competitive free antibacterial hand wipes are safe to use on children’s hands. Kills Swine price, giving excellent value for money. These paper towels are ideal for Flu and MRSA. schools, general washroom and other high use areas. Towel size: 23 x 31cm Contains a unique, patented biocidal formulation, containing 6 biocides all when open and 23 x 9.5cm folded. Colour: working independently of each other to reduce the risk of germs developing blue. Packed in sleeves of 179 towels, with resistance. 15 sleeves (packs) per box (total 2,685 towels). Please note: Sleeve pack size and numbers may • MRSA killed within 10 seconds - works for a further 72 hours vary but overall, contents will remain the same. • Kills a vast range of germs and bacteria including MRSA, Staphylococcus CL110754 Quantity £31.68 box aureus, Listeria, Salmonella, HIV, Herpes, Influenza (H5N1), Hepatitis B, 15 sleeves (179 towels) • Hepatitis C and Norovirus. Paper Hand Towels, Z Fold Type Can be used: After handling raw food; After using the toilet; After touching any dirty surface; After contact with pets and animals; After These popular 1 Ply Z-fold hand towels are used regularly in schools, hospitals visiting medical centres and hospitals; Before and after eating; Before and public washrooms etc. and made from 40gsm 1 ply paper. Each towel preparing food. is interleaved using 2 folds, so they present themselves fully open when removed. Each • Safe to use on children’s hands case consists of 15 sleeves of 200 towels giving • Comes in a convenient small sachet - ideal for carrying with you at all 3000 towels per box. Size: 23cm x 22.5cm open; • times. 23cm x 7.5cm folded. Proven to kill 99.999% of Ideal for use with towel dispenser CL120105. germs - one of the most effective • antimicrobial wipes on the market Tested to European Standard EN1276, EN1500 and prEN 12054 • Dermatologically tested • Kind to skin - contains moisturisers • and Aloe vera. Supplied as a box of 100 sachets. CL151100 Quantity £29.10 box 15 sleeves (200 towels) £38.84 ea £31.05 pk SA106010 £12.24 box Paper Towel Dispenser £35.98 ea £21.94 ea Muslin For use with our paper hand towels, this Muslin paper towel dispenser is strong, versatile and ideally suited for interleaved or C-fold paper Absorbent white, supplied as a roll. hand towels. The dispenser also incorporates Dimensions (W x L): 900mm x 5 metres. a display window to view the fill level within. Design may vary slightly. CO05040 CL120105 Lens Wipes Lens Cleaning Tissues, Paper Roll ‘Whatman 105’ Standard sized, 2-ply, blue centre-feed paper CL04270 Dimensions Quantity £5.64 pk towel rolls. Made from premium 2 Ply 100% CL04280 £51.11 pk recycled blue paper. Ideal for wiping spills or 15 x 10 cm 25 sheets drying hands. Perforated every 40cm, giving 30 x 20 cm 100 sheets 375 large sheets per roll, these are supplied hygienically shrink-wrapped in packs of 6 rolls. Size: 200mm wide approx. x 150m long. Colour: blue. Tissues CL110756 Quantity 6 rolls Tissues, Medical Wipes Two ply absorbent white tissues. 10 cartons of 80 sheets. Sheet size 186 x 108 mm. CL04255 £21.06 pk Centre Feed Roll Dispenser Tissues For use with our centre feed paper towel rolls, these€centre feed roll dispensers combine excellent White, 2 ply absorbent tissues. Dispenser functionality with robust construction. carton of 100 tissues. Dimensions: 220 x 210mm. • Robust construction makes them long-lasting • Compact form saves space CL04250 • Smooth, rounded surfaces: easy to clean • Lockable and easy to refill. £3.73 ea CL120100 Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 593

PREPROOM SUPPLIES Draining ● Lab Expert Stock Database Wire Drying Rack Draining Rack with Moveable Pegs Wire Drying Rack. Saves glassware from chips Lightweight easy to assemble plastic draining racks designed to be wall and cracks. Drain and dry test tubes, beakers, mounted. Pegs simply slot into place on the back board and are spaced to flasks, and other labware. Place self-standing allow various sizes of labware to fit on to the rack. Water is collected in the rack on a table or near a sink. Or, use hooks to trough at the base of the rack and drains hang rack on the wall. Holds up to 90 pieces of away via a rubber tube which can be labware on eighteen 127 mm pins and seventy- directed into a nearby sink or container. two 76 mm pins. Constructed of spot-welded, Supplied with wall mounting accessories. vinyl-coated steel wire for durability. Slide the A set of narrower pegs for test tubes drainage pan to the side to remove for easy volumetric flasks etc. is also available. Pegs emptying. Overall dimensions 462 x 182 x supplied are 120 x 16mm, narrow pegs 525 mm. 100 x 6mm. Dimensions: 650 x 450mm. DR150100 £62.20 ea DR81200 Type £203.49 ea £28.80 ea DR81202 £35.51 set Draining Rack Rack with Standard Pegs Set of 11 narrow pegs Polythene covered steel with eight pegs 110€mm long and twenty-four pegs 80€mm long. Wall ’Sinksafe’ Glassware Protection Mats mounted. Dimensions: 395€x€300€mm. Composed of 50mm square modular units which connect together to form a DR06300 platform to cover the base of any sink. It provides a firm cushion to break the fall of glassware. The mesh design allows Draining Rack, Double Panel unhindered passage of liquids and the small contact area of the legs prevents capillarity Free standing or can be used as two wall retention of chemical solutions. Chemical- mounted racks. Comprising of two polythene resistant polypropylene construction. Pack coated metal frames with pegs. Dimensions: of 20 individual parts, 50 x 50mm each. 510 x 480mm. Dimensions: 250 x 200mm. DR06308 £49.80 ea DR91200 Quantity £18.55 pk 20 pieces Lab Expert Stock Database Labexpert Prep Room Stock Database Starter Labexpert Prep Room Stock Database Pack with Barcode Scanner Updated and improved version (V2.0.4) of this popular software which is The complete stock control solution - starter pack with barcode efficiency! more refined and compatible with the new GHS/CLP European Regulations This pack comes complete with all you need for efficient barcode labelling (Regulation (EC) No 1272/2008 on classification, labelling and packaging of and scanning of prep room stock. Includes custom printed high quality substances and mixtures) including the new pictograms for labelling chemicals. original ZEBRA polyester scratch proof and acid resistant barcode labels to identify all your chemicals and equipment, USB laser barcode scanner for fast ••K•••••••e FLHPOISVTydaaraiaimFpeokgtmreentveihpiosaiitoldllitupitiifngaefuiEisieachsrerUtbseltsuMhsusbiGraat:iiiaeelctnzHdesrmranc-omStroiusos/ndsdoaCtiheraflrnLteeansPcrpAqttdleouoRucnacdscreiedktrteegsoieisnnturdiasgnaglakfrgopitetnehiroo-gmeorinntriaafdtpoetbeimrclremtionraggetrciaoomnrds efficient and reliable results and of course the Labexpert UK prep room stock appliance testing and indicates next test database software which is specifically designed for school and college science departments. • Includes 530 chemicals already listed with all relevant information • Minimum requirements Includes: • PC - Intel Pentium II/Celeron processor or equivalent • Microsoft Windows 98 or later • Software V2.0.4 (site license) • Laser barcode scanner (USB) • 530 pre-printed barcode labels for chemicals • 500 pre-printed barcode labels for equipment operating system or Microsoft •• M6W4iicnMrdoBosRwoAfstMNO,TffCicDe ROM Drive or later 2000/2002 needs to be installed including the components of Access 2000/2002 or •• SAlaVdteGorbAeoPrDaFboRevea,ddeirsplay at 600 x • 8Ba0r0coodreabreoavdeer (optional) LA110250 £373.75 pk SO20000 £243.75 ea 594 …inspiring tomorrow’s scientists through practical science.

Staffroom Essentials ● Storage PREPROOM SUPPLIES Breaktime Kettles Tea Bags, Tetley One Cup Electric Kettle Designed for all round flavour, these bags limit waste and guarantee taste. An automatic fast boiling jug kettle, with With a unique blend of Assam, African and Ceylon leaves, you can rest assured automatic switch off when boiling and safety you’ll get a great cuppa brew after brew. Packed in resealable catering bags, boil-dry cut out. Capacity: 1.7L. which are easy to store and keep your tea in tip-top condition. Supplied as a catering pack of 1,100 tea bags. BEST • A high quality blend of Assam, African and Ceylon teas SELLER • Designed to be brewed in the cup • Comes in a resealable catering bag • Taste tested 8 times over to guarantee flavour • Supplied in a pack of 1100 bags KE09604 ✓ £19.72 ea SR150000 Quantity £35.56 pk Electric Kettle, Black, Cordless 1,100 bags Stylish 3 kW rapid boil cordless kettle with visible fill window and illuminated on/off switch. Kenco Smooth Roast Coffee A premium blend of freeze dried instant coffee. SR150100 Quantity £40.11 ea KE160100 £33.11 ea 750 g Kitchenware Kenco Decaf Coffee Washing Up Bowls A premium blend of freeze dried decaffeinated instant coffee. SR150105 Quantity £58.84 ea 500 g Granulated sugar. Granulated sugar, available as 1 kg bags or handy plastic container for easier storage and use. SR160100 Quantity £3.75 ea BO03230 Shape Dimensions Depth £3.69 ea SR160102 £2.15 ea BO03232 £6.19 ea 750 g Shake and Pour BO03234 Round 340 mm dia. 130 mm £4.11 ea 1 kg Square/Rectangular 380 x 310 mm 140 mm Round 225 mm dia. Storage Re-Sealable Polythene Bags Ice Cube Trays Ice Cube Tray Ice cube tray - makes 12 cubes per tray. TR16224 £1.88 pk £1.56 pk Polythene Bags £3.13 pk BA01020 Type Dimensions Quantity £2.44 pk Polythene Bags ✓ £3.49 pk BA01021 Plain 89 x 114 mm 100 £2.79 pk £4.38 pk BA01022 (W x L) 100 £3.38 pk BA01000 Dimensions Quantity £6.19 pk BA01025 White write on 89 x 114 mm 100 £4.38 pk BA01006 £8.70 pk BA01026 panel (W x L) 100 £6.48 pk BA01010 100 x 150 mm (W x L) 100 BA01027 White write on 102 x 140 mm 100 ✓ £10.08 pk BA01015 175 x 225 mm (W x L) 100 panel (W x L) 100 BA01016 200 x 250 mm (W x L) 100 Plain 127 x 191 mm BA01017 200 x 300 mm (W x L) 100 (W x L) 300 x 375 mm (W x L) 100 White write on 152 x 229 mm 450 x 600 mm (W x L) 100 panel (W x L) White write on 203 x 279 mm panel (W x L) Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 595

PREPROOM SUPPLIES Storage ● Lubricants Storage Boxes Wrapping/Sealing Materials Food Boxes Aluminium Foil BEST Polypropylene with white snap-on lid. B SELLER A AL00252 Dimensions ✓ £3.51 ea AL00255 £27.38 ea A 9.1m x 300 mm (L x W) B 90m x 450 mm (L x W) BO70530 Dimensions £4.97 ea Cling Film (Sealant) BO70532 £5.02 ea BO70534 210(L) x 150(W) x 70(D) mm ✓ £5.29 ea Suitable for sealing laboratory containers. In continuous roll 300mm 240(L) x 170(W) x 90(D) mm wide x 300m. 280(L) x 200(W) x 100(D) mm Vacuum Flasks SE13500 £12.61 ea £47.81 ea Thermos Vacuum Flask ✓ £38.75 ea Domestic type. Cylindrical silvered glass in plastic container with screw stopper cap. BEST Parafilm ‘M’ Sealing Film BEST SELLER A two-way stretchable semi-transparent SELLER sealing film, in a continuous roll. Suitable for sealing beakers, tubes, Petri dishes, etc. and around irregular shapes. Interleaved with paper. VA16950 Capacity £16.76 ea SE13505 Dimensions VA16955 ✓ £23.29 ea SE13510 500 mL 50 mm x 76 metres (W x L) 1 litre 100 mm x 38 metres (W x L) Lubricants Oil ‘3 In One’ Silicone Grease A light oil containing a corrosion inhibitor in Silicone Grease 100ml can with flexible spout. Resistant to most chemicals and stable from - 40 °C to 200 °C. LU10035 £4.35 ea WD-40 Spray A lubricant, penetrator, anti-moisture agent and cleaner in 200ml Aerosol can. LU10015 Type Quantity £11.73 ea Normal Grade for 50 g Stopcocks Silicone Greases Resistant to most chemicals and stable from - 40 °C to 200 °C. LU10020 Type Quantity £27.35 ea LU10031 £5.24 ea High Vacuum Grease 50 g 596 …inspiring tomorrow’s scientists through practical science.

Soldering PREPROOM SUPPLIES Compressed Air Soldering Iron Compressed Air Cleaner Designed for high speed temperature operation, with round pencil bit. This ‘air duster’ is a dust and dirt remover, which provides a powerful, dry blast of inert gas for instant cleaning. It quickly removes dust, dirt and other loose contamination without the need for solvents. Ideal for cameras, lenses, clocks, watches, keyboards, PC’s and most electronic equipment. The air duster comes complete with an extension tube for precise targeting or inaccessible areas and is supplied as an ozone friendly 200 mL aerosol. CL170100 £10.14 ea Power Voltage 25 W 220/240 V TO16080 £20.43 ea Soldering Irons Soldering Iron Stands Antex CS18 Soldering Iron Soldering Iron Stand Miniature soldering iron to BS3456 (2.14) utilising double shaft construction Made from high grade insulation material principle. Inner ceramic shaft with outer stainless steel shaft gives near perfect with chromium plated steel spring. insulation, and reduces current leakage less than 2 uA. Supplied with 2.3 mm bit. 230V AC with PVC cable and fitted 13A mains plug to BS1363A. Operating tip temp: 390°C. BEST SELLER TO96500 ✓ £30.50 ea TO16090 £10.04 ea Spare Tips for CS18 Soldering Iron BEST A SELLER ST4 Soldering Iron Stand C Strong chromium plated steel spring with a heat resistant plastic base. Integral sponge for bit cleaning. Suitable for all Antex irons. B BEST SELLER TO96522 Size £5.26 ea TO96524 ✓ £5.26 ea TO96526 A 1.0 mm B 2.3 mm £5.26 ea C 3.0 mm Antex XS25 Soldering Iron TO96515 ✓ £8.43 ea £8.98 ea General purpose soldering iron to BS3456 (2.14) featuring the same double Soldering Iron Cleaners shaft principle as CS-18. Very low current leakage (1 uA maximum). 230V AC Soldering Iron Tip Cleaner with PVC cable and fitted 13A mains plug to BS1363A. Supplied with 3mm bit. Operating tip temperature: 420ºC. Contents are made of low abrasive brass shavings which means no water or wet TO96510 £30.50 ea sponges necessary and little temperature £5.26 ea drop compared with wet sponges. Anti-slip SPARES & ACCESSORIES £5.26 ea pad on the base with an integral adjustable Size soldering iron rest and two concave indents ✓ £5.26 ea on the top rim. Dimensions (D x H): 82 x TO96528 1.0 mm 30mm. TO96530 2.3 mm TO96532 3.0 mm EL101525 Tel: +44(0)3333 442 443 Fax: +44(0)1270 250601 www.timstar.com 597

PREPROOM SUPPLIES Soldering Solder Magnetic Parts Tray Solder Manufactured from oil resistant TPR material with a strong 50 mm diameter Rosin cored, wire form. Dimensions (Dia.): magnet. Ideal for storing nuts, bolts, screws, washers and sockets during 2.6€mm. Supplied in 100 g. disassembly/assembly. Attaches to any ferrous surface and even works upside- down. Ideal for keeping all parts secure when repairing instruments such as microscopes or power supplies. Retracts flat for easy storage. NEW TO16095 £13.26 ea Lead Free Solder, Tube TO180500 ✓ £8.69 ea A handy sized, more environmentally friendly lead-free alloy solder which contains a non-corrosive flux. Size: 1mm dia. x 2m long. Contains 99.3% tin and 0.7% copper. Tweezers LED Tweezer Set A set of industrial tweezers with built-in LED to illuminate the working area. Ideal for working inside smaller instruments such as microscopes or power supplies, where illumination is challenging. Set comprises serrated bent tip, serrated blunt tip, and smooth point tip. Each pair of tweezers is 155 mm in length, and takes a LR41H cell (supplied). EL130670 £4.94 ea Solder Tags NEW Solder Tags M3 tin plated brass solder tags. TO180200 ✓ £24.94 set SPARES & ACCESSORIES £6.30 ea BA110618 LR41 Button Cell Battery, 1.5 V EL91550 Quantity £5.63 pk Fume Extractors 100 Fume Extractor Desoldering This economical, mains powered solder fume extractor removes solder fumes Desolder Tool with a high performance fan and replaceable activated carbon filter, which helps to significantly reduce headaches, eye irritation and nausea. The unit A high quality tool with double ‘O’ ring washers for increased suction. Teflon has an adjustable angle for accurate placement. Spare replacement filters are nozzle is removeable for cleaning or replacement. Lightweight and easy to use. available (see below). Dimensions (L x Dia.): 200 x 20mm. • Power consumption: 23W • Voltage: 230V AC • Dimensions (W x H x D): 222 x 270 x 168mm • Weight: 1.4kg • Activated Carbon filter • Mains lead: 1.5m long EL91558 Tool £5.23 ea Soldering Magnifier Helping Hand Magnifier A useful aid when soldering, gluing, etc. TO96492 £3.13 ea EL101520 £30.58 ea SPARES & ACCESSORIES £8.98 ea 598 EL101522 Replacement activated Carbon filter …inspiring tomorrow’s scientists through practical science.