Timstar - International Catalogue 2019-20

Optics PHYSICS Colour Mixing continued Newton’s Colour Disc Colour Mixing Apparatus, Premium This Newton’s Disc consists of an aluminium plate with coloured segments printed on it. The colours represent the colours of the visible A powerful and effective colour mixing apparatus, comprising three spectrum (red, orange, yellow, green, blue, indigo and violet). When LEDs (RGB) in a hexagonal housing, which projects a circle of light of the disc is rotated and the speed increased, the colours start to blur and each colour, which can be overlapped to show the effect of mixing the fuse together and then mix so that the eye, unable to respond rapidly colours. The intensity of each colour can be controlled independently enough, sees this effect as white light. Mounted on base with handle at using the controls on the housing, or turned off completely. The LEDs rear to turn the disc. Weight: 0.8 kg. Dimensions (L x W x H): 250 x 150 are factory adjusted, ensuring a convincing white light in the middle. x 250mm. The 3 watt LEDs are very bright, ensuring the whole class can see. The projected circles can be up to 40 cm diameter. The housing is of robust black aluminium hexagonal construction, with ventilation to ensure the LEDs have a long life. The apparatus does not get dangerously hot. A removable 10 mm diameter rod is included, allowing the apparatus to be mounted in a retort clamp. A 12 V power supply is included. Dimensions: 38 x 14 x 12 cm. Weight: 780 g. OP110930 ✓ £27.44 ea Newton’s Colour Wheel This motorized Newton’s colour wheel is useful for demonstrating that white light is composed of a combination of different spectral colours. Comprises a disc with different coloured sectors mounted on a low voltage (6V DC) motor box with integral 4mm sockets. When the disc is rotated at a fast enough speed the colours merge to form white (usually off-white). Requires a standard variable laboratory power supply (1-6 V DC). OP180000 ✓ £249.94 ea OP74610 £39.94 ea SPARES & ACCESSORIES ✓ £243.75 ea OP180002 Colour Mixing Apparatus ✓ £19.31 ea timstar.com 499 OP180004 Spare Power Supply +44 (0) 3333 442 443 [email protected]

PHYSICS Optics Colour Filters Colour Mixing Swatch Set Colour Acetate Filter Sheet Set Laminated transparent plastic colour sheets, one each of the primary colours - red, blue and green - and one each of the secondary colours Flexible acetate transmission filter material suitable for making - yellow, cyan and magenta. The sheets are joined at one corner so slides for colour mixing experiments or any work involving coloured that different combinations can be overlapped for colour mixing. light. Each set contains sheets: Primary Red, Primary Blue, Primary Dimensions (L x W): 73 x 50mm. Green, Magenta, Cyan, Yellow and Neutral Density. The neutral density material gives 50% light transmission with no colour change. Dimensions (L x W): 210 x 148mm. Quantity £17.44 set Quantity £8.51 set OP104600 7 OP94608 6 Colour Acetate Filters Set Nuffield’ Colour Filters Supplied in A4 sheets in colours red, blue, yellow, green, and orange. Mounted 35mm slides, available in 3 primary colours, 3 secondary colours and a tricolour slide. OP11872 £9.69 set OP104612 Colour £7.86 ea OP104614 £7.86 ea OP104616 Red £7.86 ea OP104618 Green £7.86 ea OP104620 Blue £7.86 ea OP104622 Yellow £7.86 ea OP104624 Magenta £10.77 ea Cyan RGB Colour Filter Sheets Infrared Filter Sheet Acetate colour filter sheets for general colour optics applications, colour This small filter can be placed in front of a webcam (with IR filter mixing etc. Each sheet is supplied with a graph of its spectral absorption removed) or light sensor, allowing only infrared radiation to pass characteristics. Available in six colours - 3 primary and 3 secondary. through. Dimensions 30 x 30 x 3mm (approx.). Dimensions (L x W): 535 x 310mm. OP94660 Colour £11.34 ea OP161120 £22.44 ea OP94664 £11.34 ea OP94670 Blue £11.34 ea OP94662 Green £11.34 ea OP94666 Red £11.34 ea OP94668 Cyan £11.34 ea Yellow Magenta 500 More products and offers available on our website!

Optics PHYSICS Acrylic Blocks Acrylic Blocks, Large Acrylic Block Set Ideal for both experimentation and demonstration. Precision made from optical grade acrylic. A set of 10 acrylic blocks, each 25 mm thick, useful for optical experiments. • Equilateral triangle 75 mm sides • Equilateral triangle 57 mm sides • Isosceles 900 - 71 mm hypotenuse • Scalene 900 - 78 mm hypotenuse • Rectangle 75 mm x 50 mm • Semi-circular 75 mm • Biconvex 75 mm • Biconcave 75 mm • Plano - convex 75 mm • Plano - concave 75 mm OP170300 £62.44 set Acrylic Blocks, Premium Clear acrylic blocks with all round polished surfaces. D A B C Type Dimensions Equilateral Prism E OP11876 180x 25 mm (L of all £27.44 ea F OP11877 Isosceles Prism sides x D) £8.68 ea OP11878 180 x 25 mm (L of Rectangular Prism Hypotenuse x D) ✓ £11.19 ea 180 x 125x 25 mm (L x W x D) Type Dimensions OP11810 A Rectangular 115 x 65 x 18 mm (L x W x D) ✓ £7.39 ea S-Shape Block OP11815 B Biconvex Lens £1.42 ea 75 x 115 x 10 mm (L x Radius £5.19 ea Acrylic block in the form of a shallow S-Shape, ideal for demonstrating £1.84 ea total internal reflection. Dimensions (L x W x D): 220 x 20 x 20mm. x D) £2.24 ea £2.30 ea OP11820 C Biconcave Lens 75 x 115 x 10 mm (L x Radius £16.19 set x D) OP11825 D Semi-circular 75 x 10 mm (Dia. x D) OP11835 E Equilateral Prism 75 x 10 mm (L of all sides x D) OP11840 F Triangular Prism 108 x 75 mm x 10 (L of 90˚ x L of 45˚ x D) OP11845 Set of the above 6 lenses Acrylic Blocks Clear acrylic blocks. OP11870 £10.98 ea Rectangular Glass Block Optical quality glass block for refractive experiments. Dimensions (L x W x D): 114 x 63 x 18mm. Type Dimensions ✓ £4.50 ea OP11860 Rectangle 75 x 50 x 25 mm (L x W x Depth) £6.11 ea OP11861 Biconcave £6.11 ea 75 x 115 25 mm (L x Radius x £3.51 ea OP11862 Biconvex Depth) £2.91 ea OP11863 Semi-circular 25 mm (Depth) £2.58 ea OP11864 Equilateral £6.89 ea OP11865 Triangular 75 x 25 mm (Dia. x Depth) £31.19 set OP11866 Triangular 57 x 25 mm (L of all sides x Depth) OP11867 Box set of the 90° x 45° x 45° x 75 mm x 25 (L of above 7 blocks Angle x L of Hypotenuse x Depth) 90° x 60° x 30° x 75 x 25 mm (L of Angle x L of Hypotenuse x Depth) OP11785 £9.86 ea +44 (0) 3333 442 443 [email protected] timstar.com 501

PHYSICS Optics Prisms Lenses Hollow Glass Prism Adjustable Lens Holder Hollow glass prism with 50mm equilateral A versatile, adjustable, ABS lens holder sides, useful for filling with specific liquids with ‘V’ slot for use with round lenses for refraction experiments, such as Ethyl or mirrors up to 75mm in diameter. The cinnamate (ET2680). holder has a graduated vertical height adjustment to allow lenses or mirrors to be set at different heights, while the base has 2 slots to accept a metre rule, to allow more accurate measurement of distance from lens to object or light source. OP104664 £6.00 ea OP110130 £9.23 ea ✓ £6.85 ea ✓ £2.84 ea Equilateral Prisms Lens Holder £14.94 ea Clear white glass. 60° x 60° x 60°. ✓ £6.85 ea Wood with ‘V’ slot to hold lenses up to Dimensions 80mm diameter. £14.94 ea OP11740 A 38 x 38 mm (L of side x H) D OP11620 OP11750 B 50 x 50 mm (L of side x H) C Lens & Mirror Holder Right Angled Prisms Metal spring clip holder with grooves Clear white glass. 90° x 45° x 45°. to hold 50mm round lenses or mirrors, Dimensions mounted on base with a slot cut out to accommodate a metre or half metre rule. OP11756 C 38 x 38 mm (L of side x H) OP11758 D 50 x 50 mm (L of side x H) B A Spectrometer Prisms Type SP13820 Crown glass prism, 32mm aperture ✓ £16.81 ea OP140120 £4.39 ea SP13821 Extra dense flint glass prism, Face 32 x 32mm ✓ £17.44 ea REFRACTION OF LIGHT 502 More products and offers available on our website!

Optics PHYSICS Lenses continued LENSES Biconcave Lenses Double concave. Optically worked glass with ground edges. Dimensions (Dia.): 38 mm. Focal length (f) Power (=1/f [metres] = Dioptre) in m/cm/mm Convex Concave 0.05 / 5 / 50 (converging) (diverging) 0.10 / 10 / 100 0.15 / 15 / 150 +20D -20D 0.20 / 20 / 200 OP11405 Focal Length Power £1.50 ea 0.25 / 25 / 250 +10D -10D OP11410 ✓ £1.50 ea 0.30 / 30 / 300 OP11415 100 mm -10D 0.50 / 50 / 500 +6.6D -6.6D OP11425 150 mm -6.67D £1.50 ea 1.00 / 100 / 1000 OP11427 200 mm -5D £1.50 ea +5D -5D 300 mm -3.3D £1.50 ea 500 mm -2D +4D -4D +3.3D -3.3D Biconcave Lenses +2D -2D Double concave. Optically worked glass with +1D -1D ground edges. Dimensions (Dia.): 50 mm. Cylindrical Lenses Clear glass with polished faces and ground edges. Dimensions (H x W): 50 x 45mm. OP11435 Focal Length Power £2.60 ea Type Focal Power OP11440 ✓ £1.70 ea Length OP11445 50 mm -20D Biconvex 75 mm +13.3D OP11450 100 mm -10D £1.70 ea Biconcave 75 mm -13.3D OP11455 150 mm -6.7D £1.53 ea Planoconvex 60 mm +16.7D OP11460 200 mm -5D £1.53 ea OP11465 250 mm -4D £1.53 ea OP110110 300 mm -3.3D £1.53 ea OP110115 500 mm -2D £1.47 ea 750 mm -1.3D £1.47 ea 1000 mm -1D ✓ £1.36 ea £1.36 ea Biconvex Lenses £1.36 ea OP11600 ✓ £5.38 ea £1.36 ea OP11605 £5.70 ea Double convex. Optically worked glass with £1.36 ea OP11608 £9.68 ea ground edges. Dimensions (Dia.): 38 mm. Focal Length Power Telescope Model 100 mm +10D This telescope model is a great way to demonstrate the principles of 150 mm +6.7D a working telescope. Consists of two PVC tubes, mounted co-axially, 200 mm +5D giving adjustable lengths by sliding one within the other. Dia. 50 mm, 300 mm +3.3D x5 magnification. 500 mm +2D OP11505 OP11510 OP11515 OP11525 OP11530 Biconvex Lenses OP152000 £21.81 ea Double convex. Optically worked glass with Lens Wipes ground edges. Dimensions (Dia.): 50 mm. Lens Cleaning Tissues, ‘Whatman 105’ OP11540 Focal Length Power ✓ £1.71 ea CL04270 Dimensions Quantity £6.20 pk OP11545 £1.10 ea CL04280 £54.94 pk OP11550 50 mm +20D £1.10 ea 15 x 10 cm 25 sheets OP11555 100 mm +10D £0.99 ea 30 x 20 cm 100 sheets OP11560 150 mm +6.7D £0.86 ea OP11565 200 mm +5D £0.86 ea OP11570 250 mm +4D £0.86 ea OP110120 300 mm +3.3D £0.86 ea OP110125 500 mm +2D £0.86 ea 750 mm +1.3D 1000 mm +1D +44 (0) 3333 442 443 [email protected] timstar.com 503

PHYSICS Optics Lenses continued Convex Mirror Fresnel Lens These round, unmounted, optically worked glass mirrors are premium quality, incorporating A microstructured fresnel lens embossed on a very thin transparent PET vacuum coated silver reflective backing with polymer film. The lens can be combined with text or images to give an protective coating, for a superior finish. illusion of depth and movement. Five different samples are supplied, Dimensions (Dia.): 50mm. each measuring 75 x 100 mm. OP11650 Focal Length £2.19 ea OP11655 £2.19 ea OP11660 75 mm £2.19 ea OP11665 100 mm ✓ £2.19 ea OP11670 150 mm £2.19 ea 200 mm £12.48 ea 300 mm £12.48 ea OP170570 £13.06 set Stainless Steel Mirrors 3D Printed Lenses Semi-circular mirrors. 3D printing technology allows for the production of transparent, Dimensions (L x H): 150 x matte, textured, or coloured plastic elements with complex geometries 75mm. and small features. The printing process utilises inkjet technology to build structures from thin layers of a OP11735 Type UV-curable photopolymer. This allows OP11736 on-demand manufacturing of optical Concave elements directly from a CAD model, Convex with no need for expensive moulds or tooling. The 60 x 55 mm sheet features Mirror on Blocks several different optical patterns. Plane glass mirror, mounted on wooden support block for convenience. Removes the need for a separate support block to hold mirror perpendicular to work bench. OP170500 £13.06 ea Mirrors Dimensions ✓ £1.20 ea Lens & Mirror Holder OP170000 75 x 25 mm £1.63 ea OP170002 100 x 75 mm Metal spring clip holder with grooves to hold 50mm round lenses or mirrors, mounted on Plain Mirrors base with a slot cut out to accommodate a metre or half metre rule. Glass, unmounted. Silvered back with protective coating. OP140120 £4.39 ea OP11700 Dimensions Quantity £1.53 pk OP11702 £2.19 pk Concave Mirror OP11704 75 x 25 mm 10 £2.81 pk OP11710 75 x 50 mm 10 £3.44 pk These round, unmounted, optically OP11715 100 x 50 mm 10 ✓ £3.73 pk worked glass mirrors are premium quality, OP11720 150 x 50 mm 10 £5.79 pk incorporating vacuum coated silver 100 x 75 mm 10 reflective backing with protective coating, 150 x 100 mm 10 for a superior finish. Dimensions (Dia.): 50mm. Mirror Blocks A pack of 43 mm cube wooden blocks with 4 x 15 mm slot for supporting plane mirrors during optical experiments on reflection. OP11625 Focal Length £2.04 ea Quantity £22.44 pk OP11630 £2.04 ea OP74620 10 OP11635 75 mm £2.04 ea OP11640 100 mm ✓ £2.04 ea OP11645 150 mm £2.04 ea 200 mm 300 mm 504 More products and offers available on our website!

Optics PHYSICS Mirrors continued Ray Box Optical Screen & Mirror Holder A ventilated metal lamp house having an open front with extended finned sides and vertical internal grooves. The light source comprises a Holder for screens, mirrors 12 V S.B.C. lamp in holder with 1 m of twin flex. Complete with metal and glass plates, made plate having single and triple slits, one side matt black, the other white. from 20mm wide polished Takes 45 mm wide accessories. stainless steel. Height: 40 mm. OP170920 ✓ £4.59 ea Plastic Mirrors Flexible. Can be cut with scissors or a sharp knife. AC B OP11808 ✓ £16.81 ea SPARES & ACCESSORIES £2.36 ea OP110950 Spare bulb 12 V 24 W axial filament OP120135 Lenses: 100 mm FL, plastic, pack of 5 £17.44 pk OP11809 Slit Plate, 3 & 1 narrow slit £3.74 ea D Type Dimensions Quantity LED Ray Box - 4mm Sockets & Battery Pack A Double sided OP11724 B Double sided 75 x 25 x 1 mm 10 ✓ £1.78 pk An economical LED Ray Box, housed in a traditional die cast enclosure. OP11726 300 x 200 x 1 £7.19 ea The unit is supplied with a slit plate and a battery pack as a power OP160110 C Double Sided 1 mm £5.98 pk source, which requires 2 AA batteries (not included). The battery pack OP160112 Double Sided 100 x 100 mm 10 £4.95 pk plugs into 4 mm sockets mounted on the Ray Box, so it can be replaced OP160114 Double Sided £4.81 pk with a conventional power supply if desired. Please note that when OP160116 Double Sided 100 x 75 mm 10 £4.81 pk using a power supply, it must be DC, and the voltage must not exceed OP11730 £7.05 pk 3 V. A higher voltage will blow the LED and invalidate the warranty. D Concave/ 127 x 51 mm 10 However, the LED assembly can be replaced. Takes 45 mm wide convex accessories. 95 x 65 mm 10 100 x 100 x 10 0.65 mm Ray Boxes Ray Box, Multi Slit A robust ray box, featuring a ventilated metal lamp housing manufactured from powder coated steel. The unit comes complete with fixed slits - one single slit and two sets of triple slits, allowing three groups to work simultaneously. 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. OP11806 £34.31 ea OP130515 £24.94 ea SPARES & ACCESSORIES £1.39 ea SPARES & ACCESSORIES £3.74 ea EL160910 Bulbs, SBC Cap, Radial Filament OP11809 Slit Plate, 3 & 1 narrow slit OP120135 Lenses: 100 mm FL, plastic, pack of 5 £17.44 pk +44 (0) 3333 442 443 OP170517 Spare Battery Box £8.74 ea OP170519 LED Assembly £8.74 ea BA01983 2 x AA Batteries £2.21 pk [email protected] timstar.com 505

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 Students can carry out a wide range of optics experiments with this high and prisms have a small handle to avoid touching and smearing the quality, robust ray box. Designed with two slots to hold blanking plates, optical surfaces. All packed in a foam lined box. Requires a 12 V DC seven grooves for lenses. Supplied with 12 V, 24 W, bulb, holder, slit 2 A power supply. Kit contains: 6 assorted perspex blocks (prisms), 3 plates & blanking plates made from heat resistant plastic. Takes 50 cylindrical perspex lenses, 3 mirrors, 2 black plastic slit plates, set of 8 mm wide accessories. colour filters and a set of 8 colour cards. OP94745 £34.94 ea OP56520 £74.94 kit SPARES & ACCESSORIES SPARES & ACCESSORIES £1.49 ea OP104670 Spare Blanking Plates, pack of 2 £4.18 pk OP130510 Halogen Lamps, Low Voltage ✓ £4.16 pk 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 OP110170 Spare slit plates, pack of 2 ✓ £4.16 pk Halogen Lamps, Low Voltage OP104672 Spare Collimating Lenses: Plano-Convex, £12.44 pk £2.36 ea Low voltage halogen lamps, suitable for use in appropriate ray boxes. f.l. 75 mm, pack of 5 Distance between pins: 4mm. OP110950 Spare bulb 12 V 24 W axial filament Ray Box, Sliding Power Voltage OP130505 10 W A metal ray box with a sliding lamp holder. Supplied with single/double OP130510 20 W 12 V & wide/triple slit plates, and a 12 V 21 W lamp. Captive flying leads 12 V with 4 mm plugs for connection to a power supply. Takes 50 mm wide accessories. £1.20 ea ✓ £1.49 ea 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 OP120140 Spare single/double slit plate £1.23 ea OP150110 £102.44 set OP120145 Spare triple/wide slit plate £1.21 ea OP110170 Spare slit plates, pack of 2 £4.16 pk OP150200 Spare Slit Plate, Single & Triple £2.20 ea OP160181 Ray Box, Sliding £3.45 pk OP120150 Spare lens: plano-convex, focal length £1.55 ea £3.25 set 100mm £1.84 ea OP120155 Spare colour filter set OP20555 Spare bulb 506 More products and offers available on our website!

Optics PHYSICS Ray Boxes continued Camera Obscura Optical Kit with 5 Beam Laser Ray Box 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 This laser optics kit can be used in bright light conditions thanks to kit form and has an authentic look and feel when assembled. Supplied the multi-beam red laser light source. The kit comes complete with as a kit in a gift box or as an unboxed pack of 10 kits. Plexiglass (Acrylic) optical accessories and the laser is switchable between 1, 3 or 5 beams, which are Quantity £11.06 ea all parallel to each other. Comes OP160010 1 £38.69 pk complete with aluminium storage OP160012 10 £12.44 pk case. Kit components: Laser class II (1 mW): 1, 3 or 5 laser beams Power SPARES & ACCESSORIES supply for laser: 6.3V mains adaptor ST120105 A4 Card, Black mat with a disc graduated in degrees and a rule graduated in mm, 210 x 380mm 150mm diameter graduated disc Flexible mirror (plane, concave or convex) Optical blocks/prisms: rectangular; parallel faced; semi- circular; biconvex; biconcave lens; semi- circular tank; trapezoid. OP120110 £168.75 kit Carbon Filament Lamp Replacements Laser Optics Kit 240 V Rough Service lamp which adequately replaces the traditional carbon filament lamp but has the added A set of optical devices for modelling various instruments with a laser benefit of being more robust. Suitable for use in optics ray box. Each component has a magnetic back for attaching to a experiments such as pinhole cameras, projection of an whiteboard. Supplied in a robust case with foam insert. image, determining focal length of a lens etc. C••••••••••••o41GON17HCGK1ne4taureapememepimmwldtrrmniliaaaalectteeaggassosararnaa:inngnlaanbbeendentmlltteeityeeissecttelokeielØpbcemdlsmeoes3cleneiacsoorl2ocnrrdpc.odops6aeepserelremsd2c5am0rdx350mm Fitting Power £14.31 ea OP110155 BC 40 W Filament Lamp for Optics Experiments Antique style mains bulbs, useful for optics experiments as the low brightness filament makes a useful object for projection of an image, determining focal length etc. They have the added bonus of being an attractive form of mains lighting! Voltage: 230 V AC. Power rating: 60W. OP190000 ✓ £281.25 ea Fitting £10.49 ea OP160180 BC Pinhole Cameras Bulb Holders Pinhole Cameras Kit See page 255 This pinhole camera class kit contains enough components to make 10 pinhole cameras. The kit includes 10 square section black plastic tubes, LED Filament Mains Voltage Lamp 200 x 60 x 60 mm each, pre- cut black card and translucent LED filament bulbs use a string of paper for mounting on either fine LEDs to more closely mimic the end of the tubes. A small operation of a classical incandescent pin-hole in the black card filament bulb, while retaining the low will then project an image power and cool operation advantage onto the translucent paper at of LEDs. the opposite end of the tube. Requires a bright light source AB (e.g. carbon filament or antique lamp) or desk lamp with suitable object to project an image. Colour Fitting Power Equivalent Power OP74670 £79.94 kit OP180700 A Warm BC 5 W 30 W £7.59 ea SPARES & ACCESSORIES £12.49 pk OP180750 White £7.59 ea OP74672 Spare Film Sheets, pack of 10 B Warm ES 5 W 30 W White +44 (0) 3333 442 443 [email protected] timstar.com 507

PHYSICS Optics 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 An optical bench kit that fits in a suitcase! The complete kit, including space is at a premium or as an economical alternative to a full length the bench itself, can be disassembled in seconds, and stored optical bench, the light source is a bright LED which does not get hot conveniently and safely in its stylish, robust suitcase. The bench features and should give thousands of hours use without replacement and, of a guide at the rear to ensure the riders are correctly aligned, and a cm/ course, electricity consumption is very low. The lenses and the objects mm scale on the front. It comes in three parts which clip together easily (Ø50 mm) are held tight in the lens holder with a ring which can be to form a 1.1 m track. The riders can take either a 10 mm diameter tightened to ensure precise positioning and prevent risk of damage. rod, or a 2.5 mm thick sheet. They feature a pointer so their position Contents include: A 1-metre rail, graduated in mm, 1 LED light source can be read from the scale on the bench. The lens/slide holders can on a support, 4 sliders, 2 lens holders, 1 white screen, 1 F-letter, set accommodate either a 40 mm diameter optical device such as a of 3 diaphragms (Ø 3, 5 and 8 mm), 1 set of lenses - (F -100, +50, mirror or lens, or a 50 x 50 mm slide such as a diffraction grating or +100, +250). colour filter. The white LED also fits in this holder. All parts of this kit are OP110210 B £137.50 kit 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 • 5 riders (1 with knearled screw) metre bench and includes a powerful LED light source with adjustable • 4 lens/slide holders condenser. The LED light source, which does not get hot, should • 1 prism table give thousands of hours use without replacement and the electricity • 5 circular apertures (1.5/3/6/10/20 mm) consumption is very low. The rail offers excellent support and alignment • 1 single slit of the optical elements. The lenses and the objects (Ø 50 mm) are held • 1 triple slit tight in the lens holder with a ring which can be tightened to ensure • 1 figure of ‘1’ precise positioning and prevent risk of damage. Contents include: • 6 plastic lenses (focal lengths -100/-200/+50/+100/+150/+250 A 2-metre rail, graduated in mm, 1 LED light source with adjustable mm) condenser and support, 8 sliders / lens holder + 4 lens holders, 1 •••• 1 mirror (50x50 mm) prism + 1 prism holder, 1 white screen + 1 ground glass screen, 1 1 white screen (100 x 150 mm) F-letter, set of 3 diaphragms (Ø3, 5 and 8 mm), 1 set of lenses - (F Suitcase 320 x 430 x 115 mm -100, -50, +50, +100, +200, +500), 1 concave mirror + 1 convex Weight 1.9 kg mirror + 1 plane mirror. OP170200 A £175.00 ea OP110215 C £243.75 kit 508 More products and offers available on our website!

Optics PHYSICS 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 Made from black-anodised aluminium with mm scale. 1m long, cross and the horizontal placement of the lamp socket within the lamp section 26 x 82mm. Supplied with 2 adjustable levelling feet with rubber housing can be done by displacing or turning the handle at the back pads, 2 sliding saddles with 10mm bore fixings to accept accessories, 1 of the lamp. The Reuter Lamp is supplied with a bayonet socket for sliding saddle for optical disc and 10mm hole. standard, clear, incandescent 12V/35W lamps and a two pole socket for halogen lamps rated at 12V/50W. During operation the lamp OP66520 A £206.25 kit housing is ventilated by means of a built-in ventilator, so that the surface temperature of the housing does not get too hot. The unit is Optical Bench Extension supplied with safety jack connectors for attaching the power supply, A 60 cm extension for use with the Joint Link (OP66524) for aligning which should be 12V AC/DC 4.2 A, with refracted or diffracted beams. Requires an additional Adjustable and comes with a 10mm diameter Foot (OP170526) to support it. mounting tap appropriate for use with an optical bench or with a laboratory stand. A 50W halogen lamp is supplied. Mass: 1.2 kg. Dimensions (L x W x H): 310 x 76 x 105 mm (excluding mounting tap). OP110160 £312.50 ea SPARES & ACCESSORIES ✓ £8.69 ea OP190162 Replacement Lamp OP66522 ✓ £86.19 ea Aperture & Slide Holder SPARES & ACCESSORIES ✓ £21.81 ea OP170526 Foot for Premium Optical Bench Holder for apertures, colour filters, etc. The aperture holder can be mounted on the Joint Link lens mount and is rotatable and suitable for apertures or filters mounted in standard 35mm For coupling of the OP66520 slide frames. Suitable for use with parallel Optical Bench Kit to the OP66522 beam light source. Extension Section, with graduated angle disc for measuring deflection OP110165 ✓ £23.69 ea angles. Lens and Slide Holder OP66524 ✓ £81.19 ea A versatile holder on a 10mm Light Source diameter steel rod made to hold slides up to 50 x 50mm and 50mm diameter This simple, high intensity light is extremely suitable for experiments with lenses up to 16mm thick. lenses, prisms and optical gratings. The light source itself is a small, long-filament lamp with the filament aligned along the supporting OP66536 ✓ £33.06 ea rod, making it easy to position on the optical bench. The long narrow £32.44 set filament is ideal for performing experiments with lenses and gratings. Lenses The lamp housing contains a fan to keep the housing cool to touch. The lamp is rated 12 V / 15 W Set of lenses, supplied in a storage box containing: Biconcave -100mm, Biconcave OP66534 ✓ £124.94 ea -50mm, Biconvex +50mm, Biconvex SPARES & ACCESSORIES ✓ £5.23 ea +100mm, Biconvex +1000 and Biconvex OP110900 Replacement lamp +2000mm. Dimensions (Dia.): 50mm. Quantity OP66538 6 +44 (0) 3333 442 443 [email protected] timstar.com 509

PHYSICS Optics Optical Bench & Accessories continued Direct Vision Prism Holder Adjustable Slit Prism holder for direct vision prism OP170310, mounted on a 10 mm A 42mm continuously adjustable slit. Max diameter support rod. Comes with a 9mm. The precision sprung mechanism and clamping device and felt covering to slit in black coloured brass is mounted on protect the prism. a black anodised aluminium square with lugs for horizontal and vertical mounting. Dimensions (W x L): 150 x 150mm. OP66544 £118.69 ea OP170902 ✓ £21.19 ea Slits and Filter Holder White Screen Designed to accept optical filters, slits etc in standard 35mm slide In laminated plastic with white mounts (50 x 50mm). With 10mm fixing rod. surface with 10mm fixing rod. Dimensions (H x W): 250 x 250mm. OP66542 £34.94 ea OP104660 £32.44 ea Young’s Slits Profiled Rail These come mounted in a 35mm A profiled rail designed for mounting and aligning optics equipment slide holder. Three slit spacings are relative to each other. To be used with one or more sliding saddles available. with 10mm diameter hole and thumb screws. Dimensions (L): 370mm. Please note: Sliding Saddles NOT included. OP104636 Slit Distance £19.31 ea OP104652 ✓ £46.19 ea OP104638 £19.31 ea OP104640 0.1 mm £19.31 ea 0.5 mm 1.0 mm Prism Table for Optical Bench Sliding Saddle This prism table (prism not included), designed For fixing of optical equipment with max. 10mm diameter fixing rod. for use with the premium optical bench or Made of black-anodised Aluminium with thumb screw and measuring profiled rail, has a 62 mm diameter disc mounted line. Suitable for use with the Premium Optical Bench OP66520, and on a 10 mm diameter stainless steel rod. Features Radioactivity Bench Kit RA95610. Dimensions (W x H x L): 35 x 50 x an adjustable spring clamp for holding prisms 84mm. from 10 mm to 50 mm high. Prism not included. OP170900 ✓ £63.69 ea OP104656 ✓ £34.31 ea 510 More products and offers available on our website!

Optics PHYSICS Lasers Blue Laser Pointer Red Laser Pointer Superb class II (≤1 mW) laser pointer emitting true blue laser A Class II laser pointer for lectures and demonstrations. Powered by 2 x light, at a wavelength of 445 AAA batteries (Not Supplied). nm. An excellent addition to the laser range for diffraction experiments etc. OP161445 £81.19 ea SPARES & ACCESSORIES £2.25 pk BA01984 2 x AAA Batteries OP11882 ✓ £13.69 ea SPARES & ACCESSORIES £2.25 pk Violet Laser Pointer BA01984 2 x AAA Batteries A class 2 (< 1mW) laser Red/Orange Laser Pointer, 635nm emitting purple/violet light at 405nm. Great for This class II (≤1 mW) red/orange laser pointer, emitting light at a demonstrating Total Internal wavelength of 635 nm, provides a higher visibility (brighter) light than Reflection in a bottle of tonic standard 650 nm red lasers for the same power output. water! OP150100 £37.44 ea SPARES & ACCESSORIES £2.25 pk BA01984 2 x AAA Batteries OP161465 £22.44 ea Red & Green Laser Pointer SPARES & ACCESSORIES £2.25 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 £56.19 ea SPARES & ACCESSORIES £2.25 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 LASER DEFINITION & x Dia.): 138mm x 13.5mm. WAVELENGTHS OP120120 £43.69 ea timstar.com 511 SPARES & ACCESSORIES £2.25 pk BA01984 2 x AAA Batteries [email protected] +44 (0) 3333 442 443

PHYSICS Optics 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 This laser emits an intense monochromatic red beam of wavelength experiments, a horizontal plane light beam for the study of wave 630 - 640nm at 0.9mW (Class II operation). Typical beam divergence propagation and 1 or 3 light beams in a vertical plane for ray optic is approximately 1 millirad. The laser beam can be modulated by experiments. The unit also allows studying transmission through a fibre applying an external digital or analogue waveform to the 3.5mm jack optic using the modulated input for the laser beam. The magnetised socket on the rear panel. Alternatively the beam can be modulated by base means it can also be used on magnetic boards, for easier the internal generator which produces 0.1µs pulses at approximately demonstration. Can be powered by 2 x 1.5 V batteries (not included) 1MHz. This allows speed of light experiments to be easily performed. or mains power adapter (included). Specifications: Wavelength: 650nm The passage of light through light guides and optical fibres can be Power: 1mW (class II) Modulation: TTL signal (5 V) with 4mm safety demonstrated by filling a glass or plastic tube or U-tube with very dilute plug Power supply: 2 x 1.5 volt battery or mains adaptor provided. milk. OP84740 £281.25 ea OP120100 ✓ £104.94 ea Laser Detector Reflection/Refraction Apparatus Kit For detection of modulated laser or other light sources over a wide This kit comprises a red laser which attaches and rotates around a frequency range. Output is available from two 4 mm sockets and graduated plate, which makes it easy to see and measure the incident through the built in loudspeaker if the modulation is in the audio range. beam angles for both reflected and refracted beams. It can be used in May be used with a modulated laser to detect analogue or digital data a vertical plane with the cylindrical tank with water or in a horizontal including high frequency pulses used to determine the speed of light. plane with the glass optical accessories, which are included. Useful Frequency range 100 Hz to 5 MHz. Dimensions (L x W x H): 68 x 120 to demonstrate: Verification of the Snell’s law of refraction with a x 36 mm. 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 ✓ £74.94 ea OP120105 £156.25 kit 512 More products and offers available on our website!

Optics PHYSICS Lasers continued Optics Screen Laser Diffraction Kit A white acrylic screen mounted in a wooden base, suitable for image projection in optics experiments. Dimensions (H x W): 190 x 120. This kit comprises 18 slides which allow performance and demonstration of e.g. “Fraunhofer Diffraction”, “Fresnel Diffraction”, a number of other 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 OP74805 £18.69 ea 2 Polaroids 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 £243.75 kit OP74810 £24.94 ea Warning Signs Optical Pins Vinyl, self adhesive. Dimensions (W x H): 20 x Nickel plated steel, 51 mm long. 30 cm. In packs of 100. SA27058 Type £7.09 ea Laser Beam Optical Screens & Boards OP11788 £4.94 pk Aperture Slide Holder Stand Ultraviolet (UVA) Accessories Set Robust holder suitable for holding slides, UVA accessories set consisting of standard glass plate, fluorescent plate, apertures etc. for optical experiments. phosphorescent plate, UVA-filter, UVA plastic film and normal plastic Features a shielding plate, 80 x 120 mm, film. For experimenting with ultraviolet light. with a heavy, stable metal base. Suitable for use with 50 mm wide slide mounts, such as our diffraction gratings, laser diffraction slides, Young’s slits, Nuffield colour filters and Polaroid filters. OP170910 ✓ £34.31 ea OP110150 ✓ £93.69 set +44 (0) 3333 442 443 [email protected] timstar.com 513

PHYSICS Optics Spectral Lamps Spectral Tubes Spectral Lamp Holder Spectral Tube Holder & Power Supply This Spectral lamp house is designed for European designed and manufactured. For quick and safe setting up use with spectral lamps which fit a E-27 of spectral tubes. The spectral tube is mounted from the front in the socket. These spectral lamps must never insulated holders with electrodes, where the lower holder is spring be connected to the mains, but require a loaded parallel to the tube axis. The holder is provided with a power special control transformer, as listed below. supply that can deliver 6 kV DC at max 2 mA to the electrodes built The Spectral lamp house is equipped with into the base of the insulated holder. Can be used with spectral tubes a ventilator ensuring that the surface of the OP66582 to OP94616 and with many other types of spectral tubes. Spectral lamp house does not exceed 60 °C. For 230 V AC. Dimensions (L x H x W): 78 x 78 x 290 mm. OP110180 £262.50 ea 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 OP66580 £262.50 ea OP110185 £262.50 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. The capillary tube measures 80 mm length x 6 mm diameter. Total length approx 220 mm. Spectral Lamps Spectral lamps with E27 screw type fitment. Requires lamp holder (OP110180) and transformer (OP110185). OP110190 Type £88.69 ea OP66582 Type £49.94 ea OP110195 £88.69 ea OP66584 £52.44 ea OP110200 Sodium £88.69 ea OP66586 Spectral Tube Ar £52.44 ea Mercury OP66588 Spectral Tube He £52.44 ea Neon OP66590 Spectral Tube H2 £52.44 ea OP66592 Spectral Tube Hg £52.44 ea OP94614 Spectral Tube Ne £52.44 ea OP94612 Spectral Tube O2 £52.44 ea OP94616 Spectral Tube Kr £59.94 ea Spectral Tube N Spectral Tube Xe 514 More products and offers available on our website!

Optics PHYSICS 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 Exclusive to Timstar, this superb, durable, easy to set-up and use digital collimator and telescope bodies are heavy castings, other metal parts spectrometer creates real-time images, graphs and measurements via being bright plated. the exclusive software. Once the software has been downloaded and installed, the spectrometer simply plugs into a USB port and the live- SCALE: 170mm dia. divided 0 to 360° x 1°, independently rotatable feed camera is selected by clicking on a tab. That’s it - you are now up with locking screw. A spring-loaded vernier scale attached to the and running. The software also includes a reference library of common telescope mount provides readings to 0.1° (6 minutes of arc). elements. Suitable for use with: flame emissions from burning salts; COLLIMATOR: Mounted on fixed pillar with axis adjustment. spectral (gas) tubes; LED’s & LED columns; many other types of visible Objective lens 150mm FL, an aperture of 21mm and is carried in light source. Includes Camera, Tripod, USB lead, Software and Tutorial spiral focusing systems. Unilaterally adjustable slit 6mm long. Videos. For a video demonstration: timstar.co/RSPECvideo TELESCOPE: Mounted on moveable pillar with adjustment, locking screw and axis adjustment. Objective lens has 170mm FL, 21mm • Simple to set-up and easy to use. aperture and is carried in a spiral focussing system. • All students see the same thing – via classroom projector and RAMSDEN EYEPIECE: With cross wires and locking ring focus • whiteboard. adjustment. PRISM TABLE: The table is provided with three leveling screws and is Camera auto-focuses and adjusts to a wide range of light line marked to assist placement of prism. conditions. STANDARD ACCESSORIES SUPPLIED: 1 prism clamp for prisms up to 40mm high, 1 diffraction grating holder, aperture 25 x 25mm, 1 • Spectral range: 390 to 700 nanometres. small screwdriver, 1 tommy bar for axis adjustment and case. • Accuracy: 1% or better. Spectroscopic features as narrow as 3 nanometres can be measured. • 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 £237.50 kit ✓ £16.81 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 £362.44 kit ... literally take it OUR EXPERT SAYS... out of the box and you can be set up in minutes. Used with an overhead projector SP13817 £375.00 kit ✓ £16.81 ea the whole class can see results SPARES & ACCESSORIES ✓ £17.44 ea SP13820 immediately and start investigating. SP13821 Crown glass prism, 32mm aperture Extra dense flint glass prism, Face 32 x 32mm +44 (0) 3333 442 443 [email protected] timstar.com 515

PHYSICS Optics 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 A simple, robust, low-cost tube spectrometer ideal for introducing the 600 lines per mm diffraction grating. It has an image-centring prism. concept of spectrometry. It comprises a 150 x 28 mm tube, with 15 x Dimensions (Dia. x L): 25 x 105mm. 0.5 mm slit at one 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. Quantity ✓ £10.56 ea OP170100 £93.69 pk OP170100/10 10 Spectroscope OP66595 £93.69 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 Diffraction Gratings, Economy arising from natural light, distinctive emission bands from artificial sources such as sodium lamps and differences between different Economy diffraction gratings in a 50 x 50 mm plastic slide. Aperture 36 types of fluorescent lighting tubes. The spectroscope is made from x 24 mm. Screen printed on the slide are the lines/mm, and arrows to polypropylene and supplied in flat pack form for quick self-assembly. indicate the direction of the lines and gaps. It comes with a free CD but can be used with any CD (or a DVD for higher resolution). ABC OP94650 ✓ £4.41 ea Direct Vision Spectroscope OP170150 Grating ✓ £10.56 ea OP170152 £11.19 ea For rapid examination of spectral composition of white light. Consisting OP170154 A 300 lines/mm £11.81 ea of a metal tube with draw out focussing and an adjustable slit fitted with B 600 lines/mm achromatic objective glass and 3 element prism. C 1000 lines/mm OP11887 £46.19 ea Diffraction Gratings Mounted in 50 x 50mm slide holders. Aperture size 36 x 24 mm. With tough plastic frame. Made in the UK. 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 £37.44 ea OP11790 Grating £19.31 ea OP11791 £19.31 ea 516 OP11792 80 lines/mm ✓ £19.31 ea OP11793 100 lines/mm £23.06 ea 300 lines/mm 600 lines/mm More products and offers available on our website!

Optics PHYSICS Diffraction Gratings 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 Set of gratings 96, 300 and 600 lines/mm mounted on a single slide loss. Stunning images can be projected with a simple laser pen. There with three 16 x 19mm apertures. Dimensions (L x W): 90 x 30mm. are two star signs, a circle 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 £31.81 ea OP170745 £21.19 ea Diffraction Glasses Photons The relationship between light and colour has never been explained Determining Wavelength Of Light Apparatus so clearly as with these fun glasses. The double-axis diffraction grating embedded in the lenses ensure that, when looking through these The apparatus is designed to measure the wavelength of light by glasses, almost any single light source can be split into a 3D spectrum studying the interference pattern from a double slit. The equipment is of the component colours. Specifically designed to fit students up to to well suited for student lab exercises. The device contains a 12 V / 15 KS3 but will fit older students. W festoon lamp with a holder for colour 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 Quantity £8.50 pk OP150700 ✓ £118.69 ea OP94645 10 RGB – WAVELENGTH Planck’s Constant Apparatus & FREQUENCY This apparatus is designed to determine the approximate value of Richard Of York Gave Battle Letter Colour Wavelength Frequency Planck’s constant, using a range of LEDs of known wavelength, to In Vain i.e. ROYGBIV R Red allow the electron/photon energy to be calculated. There are 7 LEDs, 620-750 nm 400-484 THz 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 O Orange 590-620 nm 484-508 THz and ammeter for voltage and current measurements. By monitoring the Y Yellow 570-590 nm 508-526 THz 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 G Green 495-570 nm 526-606 THz approximate value of Planck’s constant can be deduced. Requires a 9 V B Blue 450-495 nm 606-668 THz DC power supply (standard lab power supply). I Indigo 420-450 nm 668-714 THz V Violet 380-450 nm 668-789 THz +44 (0) 3333 442 443 RA140105 £54.94 ea [email protected] timstar.com 517

PHYSICS Optics Photons continued Fibre Optic Cable, Unsheathed Frederiksen Planck’s Constant Apparatus This unsheathed cable illustrates the magical qualities of optical fibre light transmission. Dimensions (L x Dia.): 1 metres x 1mm. This apparatus is designed for the determination of Planck’s constant. The knee voltage in the characteristic curve of a light emitting diode OP104644 £2.88 ea (LED) is closely related to the energy of the emitted photons. By graphing knee voltages for a range of LEDs as a function of the Fibre Optic Polymer Cable frequency of the emitted light, a linear relationship is established. The LEDs used emit UV (ultraviolet), NIR (near infrared) and three An un-terminated coil of polymer fibre for general fibre optic work. wavelengths in the visible Dimensions (L): 20 metres. 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. OP66255 £93.69 ea RA150900 ✓ £193.75 ea Fibre Optics System Speed of Light Set of one Transmitter and Receiver each housed in a small plastic case. The system comes complete with 5 m and 20 m sheathed polymer Frederiksen Speed of Light Apparatus optical fibre coils terminated with clip housings to mate with the transmitter and receiver units. This set provides a self-contained system Watch the progressive delaying of light pulses as they travel longer for demonstrating and using a fibre optic data link. The transmitter unit and longer. Demonstrate that Light has a finite speed Determine the is housed in a small plastic case and contains all the electronics for speed of light Fast and easy setup Direct time-of-flight measurements producing the modulated light source as well as an easily accessible with pulses of light Experiments can be performed easily in a standard PP3 battery compartment. A choice of modulation is available - a classroom Very short but powerful pulses of light are emitted from variable frequency audio tone in the range 1Hz - 1 kHz and a 250 the box. When the light pulses hit the special retroreflective foil of the kHz square wave for speed of light investigations, which links to 4mm reflector they are directed back towards the source – with no need sockets for monitoring on an Oscilloscope. The receiver is in a similar for tedious adjustments. Via a beam splitter, the light pulses finally hit case and contains a variable gain amplifier with integral loudspeaker, a high speed photodiode, converting them into electric pulses to be as well as direct monitoring sockets for an oscilloscope. The wavelength displayed on an oscilloscope. A separate synchronization signal marks used is in the visible red part of the spectrum and with the modulation the time of pulse emission and constitutes a reference for timing the set at 1Hz the pulsing beam can be easily seen. 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. OP74680 £368.75 kit OP170600 ✓ £518.75 ea Optical Signal Transmitter Fibre-Optics This Optical Signal Transmitter set demonstrates the use of visible light for sending signals. It consists of a transmitter module and receiver Fibre Optic Torch module, each with two transmission channels, plus an optional optical fibre link for each channel. The transmitter unit inputs can be connected Explore fibre optics with these to mp3 players, radios, and other audio sources, and the receiver unit fascinating battery-operated torches. outputs can be connected to amplified loudspeakers. Each unit has Light emerges from the end of long two monitoring points for use with a computer running sound analysis flexible fibres, which can be bent and software. The set includes a power supply for each module. twisted. Quantity £14.31 pk OP160700 £187.50 ea LA103600 3 More products and offers available on our website! 518

Optics PHYSICS Newton’s Rings Polaroid Stress Analyser Newton’s Rings Apparatus The Polaroid stress analyser allows students to view stresses which exist in clear plastic materials. This simple apparatus consists of two crossed This simple apparatus nicely demonstrates Newton’s rings. It consists of Polaroid filter squares (i.e. axes perpendicular to each other), 65 x 65 a slightly convex lens, mounted against a flat glass plate. Interference mm, on a plastic handle. A gap between the Polaroid squares allows fringes, known as Newton’s rings, can be observed as a series of light clear plastic shapes (or even a clear ruler) to be placed between them, and dark concentric circles around a central dark spot where the lens to view any stresses within the material - the stresses show as coloured and glass plate meet. This phenomenon is usually observed using a areas and lines within the plastic. The analyser comes with two cut-out monochromatic light source such as a sodium lamp. The pressure on shapes which can be compressed to alter the stress patterns. Additional the glass can be varied by using the fitted screws. Glass Dimensions shapes are also available separately. (Dia.): 60mm. Please note: a sodium light source and low power microscope e.g. a vernier or travelling microscope will be required to see the rings properly. SO130525 £13.69 ea Polarisation OP74720 £37.44 set Polarisation Model Polaroid Analyser Samples A simple model of polarisation to show the effect of polarising filters. The pieces are A set containing four additional pre-cut shapes and a 200 x 200 mm made from live-edge acrylic. sheet (for cutting your own shapes) for use with the OP74720 Polaroid Stress Analyser. OP104632 £9.05 ea Polaroid Squares Unmounted Polaroid squares suitable for class work on polarised light. OP74725 £38.69 set Dimensions Quantity £13.69 pk Polarimeter OP74730 50 x 50 mm £68.69 pk OP110105 150 x 150 mm 2 A simple, cost-effective polarimeter suitable for 2 student use. A monochromatic light shines through a polariser at the base of the polarimeter and Polaroid filters, mounted through a sample tube containing the solution for testing. A second polariser located in the eyepiece High quality polaroid filters, sandwiched is then rotated and the angle of rotation/extinction between glass sheet for rigidity and ease measured on the integral scale. Requires a standard of cleaning, and mounted in 35mm slide DC power supply to power the light source. holder frame. Quantity £8.44 pk OP74740 Polarimeter £58.69 ea OP160800 2 £36.19 pk SPARES & ACCESSORIES £6.76 ea OP160805 10 OP74742 Spare Tube timstar.com 519 +44 (0) 3333 442 443 [email protected]

PHYSICS Optics ● Physical Quantities Refraction Extech RF20 Refractometer A compact, easy to operate portable refractometer, with automatic temperature compensation (10-30 °C). It requires only 2 or 3 drops of solution to provide accurate, repeatable measurements on an easy to read scale. The prism and lens have a single focus adjustment. Supplied complete with case, calibration screwdriver, plastic pipette, & calibration solution. • 0-100 ppt (10-30 °C) • 1.000-1.070 specific gravity RF190100 ✓ £143.75 ea Physical Quantities Density Mole Set Equal Mass Metal Cylinders Set This Mole Set contains samples of four different metals and helps students to visualise a mole of a substance in a solid state, as well as Equal mass & diameter cylinders showing the difference in density of developing a better understanding of the concept of the mole, mass, metals. Comprises six 100 g, 16 mm diameter cylinders of brass, lead, molar mass, along with the differing properties of the various metals. copper, iron, zinc, and aluminium in a wooden holding block. The set contains four element specimens: copper, iron, zinc and aluminium, each containing approximately one mole (6.023 X 1023 atoms) of the element. Comparison of each sample, side-by-side, clearly shows that the same molar amount of different elements have different masses and occupy different volumes, due to each element having a different atomic mass and density. MA120200 £24.94 set Density Cube Set A set of cubes for density investigations or comparison of different materials, consisting of nine 25 mm sided cubes. Set includes brass, iron, copper, aluminium, hardwood (beech), softwood (pine), nylon, PVC and acrylic. Supplied in wooden box. MA150064 £28.06 set MO170300 ✓ £23.69 set 520 More products and offers available on our website!

Physical Quantities PHYSICS 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 £8.38 pk MA19026 Brass 200 x 12 mm 10 £10.64 pk MA19028 £6.85 pk Copper 200 x 12 mm 10 Mild Steel 200 x 12 mm 10 Dimensions Quantity £4.31 set Smart Materials MA18950 A 10 mm £16.19 set MA18952 B 20 mm 7 See pages 579 - 582 7 Metal Cubes Tungsten, High Density Metal Type Dimensions Quantity Tungsten metal (aka wolfram) has a very high density, 19.25 g/cm3, which is comparable to that of uranium and gold. It has a melting point MA18960 Aluminium 20 mm 5 £8.64 pk of 3422 °C, which is the highest of all the non-alloyed metals. Tungsten MA18962 Brass £12.38 pk is used in incandescent lightbulb filaments, where it emits bright light MA18964 Copper 20 mm 5 £16.81 pk when heated to very high temperatures. It is also used in the form of MA18966 Iron tungsten carbide (compound with carbon) for wear-resistant abrasives MA18968 Lead 20 mm 5 £4.43 pk and cutting tools. Tungsten is an effective radiation shielding material; MA18970 Zinc £7.43 pk it’s used in the nuclear industry as a non-toxic replacement for lead. MA18972 Tin 20 mm 5 £7.44 pk Tungsten and gold have almost the same density and tungsten is used £24.94 pk as a core material in counterfeit gold bars. It is impractical to cast 20 mm 5 tungsten because of its high melting point. Instead, powdered tungsten is pressed to shape and sintered at a temperature much lower than its 20 mm 5 melting point. Sold as a rod with dimensions: 6 mm diameter x 95 mm length, and weight 51 g. 20 mm 5 Metal Discs Set Set of discs comprising aluminium, brass, bronze, copper, nickel€silver, steel, stainless steel, and zinc. The metal name is stamped onto each disc. Diameter Quantity £5.45 set MA18980 25 mm 8 Metal Pieces Set MA160700 £22.44 ea Set of metal pieces each stamped with Materials Set, Solids the identifying letter. Comprising: soft aluminium, hard aluminium, magnetic Consisting of seventeen blocks of the following materials:- softwood, stainless steel, non-magnetic stainless hardwood, paraffin wax, aluminium, iron, polystyrene, perspex, glass, steel, zinc, zinc plate, nickel silver, bronze, slate, marble, lead and brass. Some blocks are the same materials in galvanised steel, mild steel, copper and different sizes. brass. Dimensions Quantity £6.76 set MA18986 50 x 25 mm 12 Metal Pieces Type Dimensions Quantity MA19000 Aluminium, soft 50 x 25 mm 10 £1.56 pk MA19002 £2.15 pk MA19004 Aluminium, hard 50 x 25 mm 10 £6.69 pk MA19006 £5.31 pk MA19008 Brass 50 x 25 mm 10 £1.64 pk MA19010 £6.24 pk MA19012 Copper 50 x 25 mm 10 £3.96 pk MA19014 £12.44 pk MA19016 Mild Steel 50 x 25 mm 10 £7.35 pk Nickel Silver 50 x 25 mm 10 Stainless Steel 50 x 25 mm 10 Tin 50 x 25 mm 10 Zinc 50 x 25 mm 10 MA65500 £156.25 set +44 (0) 3333 442 443 [email protected] timstar.com 521

PHYSICS Physical Quantities Materials continued Strip & Wire Testing Benchmark™ Strip & Wire Tester Materials Kit, Sheet A combined strip and wire materials tester in one unit. The apparatus Set of twenty everyday materials: iron, steel, aluminium, wood, allows strips of various materials (e.g. plastics), or wires of different polythene, brass, rubber, copper, wool, nylon, cork, lead, zinc, carbon, types, to be firmly clamped so that loads can be applied to test glass, PVC, cotton, cardboard, Perspex and nickel. For identifying, the strength and elastic properties of the materials. This combined sorting in many different ways, matching to everyday artifacts and apparatus replaces the two separate versions i.e. the ‘wire tester’ and testing with magnets/electricity. ‘strip tester’. MA94074 £35.56 kit MA130100 £37.44 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 This economical version of Young’s modulus apparatus includes a measuring the hardness of a variety of solid materials. The apparatus 0 - 30 mm scale and a moveable vernier readable to 0.1 mm. Both consists of a rig, an anvil, a punch, a delivery tube (short), a drop tube have bars with clamping screws for the wires and hooks for the tension (long), a weight and a pin. A material weight and loading masses. The apparatus come supplied with a sample for testing is placed on a metal anvil clamp for fitting and a tension weight, mass 1.3 kg approx. for the at the base of the rig. A metal punch is then comparison wire. Complete with wires. 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 £104.94 kit MA140100 £44.94 kit SPARES & ACCESSORIES £19.31 pk MA74135 Hardness Samples: Copper, Brass, Young’s Modulus Kit - Searle’s Pattern Aluminium & Plastic For the experimental determination relationship between a load applied Hookes Law to a wire and the resulting extension. Consisting of an engraved brass scale with a vernier reading to 0.1 mm. Complete with tension weight Hooke’s Law Kit but without load masses. A quality piece of apparatus to demonstrate the relationship between the extension of a spring and the load applied to it. Consists of a moveable 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 £69.94 kit MA19050 £49.94 kit SPARES & ACCESSORIES £7.71 set 522 MA19052 Young’s Modulus Set of 6 Wires More products and offers available on our website!

Vibrations & Waves PHYSICS Wave Models Wave Machine Wire Helix, (Slinky) To demonstrate form and propagation of longitudinal and transverse Flat section steel wire in helical coil. waves. 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 £79.94 ea Microwave Apparatus SO110125 £21.81 ea Microwave Apparatus Set Wave Demonstrator Kit Microwave transmitter/receiver apparatus for the investigation of transverse waves, using 2.8cm wavelength. Kit includes Probe Detector This wave machine, which comes in kit form and must be self- for non-directional reception of the microwaves and comes complete assembled, is designed to demonstrate the theory of waves. The kit with 12v AC/DC mains adapter and detailed instruction booklet comprises: A transverse wave machine with 80 arms spaced on nylon illustrating various microwave experiments, covering topics of wave line with detachable weights to provide an example of transverse wave propagation in which movements of the rods create the waves; Two •reflection, refraction, polarization, interference etc. loaded elastic cords to illustrate transverse wave motion; An extension Plane polarised wave for transmitter, internally modulated with 1 spring with weights, for the propagation of both longitudinal and transverse waves; A teacher’s book which describes the experiments • kHz tone, music, or no modulation. and gives detailed quantitative analysis. 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 £118.69 kit OP152800 £743.75 set +44 (0) 3333 442 443 [email protected] timstar.com 523

PHYSICS Vibrations & Waves Microwave Apparatus continued Microwave Probe Detector Wave Kit This battery operated microwave probe detector allows the student to measure, plot and investigate the microwave field intensity. The probe Used to demonstrate the properties of electromagnetic waves and as is slightly less sensitive than the normal receiver, and is largely non- an aid to teaching the behaviour of visible light. The value of using directional. The unit benefits from a built in amplifier with variable gain microwave radiation for this purpose is two fold. Firstly, the concept that and meter displaying the relative signal strength.Output can be taken visible light is a small section of a much wider band of frequencies may via the BNC connector either to an oscilloscope or meter. The probe be introduced. Secondly microwave radiation shares so many common detector is compatible with most 2.8cm microwave educational systems properties with visible light that many experiments can be undertaken, on the market. which would otherwise be impossible due to limitations on time or equipment costs. The kit contains both the Transmitter and Receiver. The • 2.8cm microwave probe receiver individual units are available separately and are compatible with similar •Â€Mobile, easy to use, battery operated 2.8cm systems from other manufacturers. •Â€Built in illuminated signal strength meter •Â€BNC terminated output for use with oscilloscope, meter or audio ••Â€€aNGmaopinn-dciornetcrtoiol nal OP74690 £437.44 kit OP94600 £150.00 ea SPARES & ACCESSORIES ✓ £243.75 ea OP74692 Transmitter ✓ £243.75 ea OP74694 Receiver THE ELECTROMAGNETIC SPECTRUM 524 More products and offers available on our website!

Vibrations & Waves PHYSICS Microwave Apparatus continued Resonance Tube, Premium Microwave Accessories Set This resonance tube provides many options for working with sound waves: Examine standing waves in a tube open at both ends, closed Useful set of accessories for use with the microwave apparatus, at both ends or open at one end and closed at the other. Examine including the following, mounted on feet for free standing: standing waves in a closed tube containing various gasses (e.g. CO2). Vary the length of the half open tube by means of a piston. • 2 Aluminium plates, 200mm x280mm The apparatus consists of a Plexiglas tube with two end pieces – one • 1 Aluminium plate, 60mm x280mm with a loudspeaker and one with a hole for the piston shaft or for the • 1 Perspex plate, 200mm x280mm SO190205 microphone probe. Cable for the loudspeaker, piston and • 1 Polarization grille, 200mm x 200mm 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. OP152802 £143.75 set SO150200 £293.75 ea Resonance Tubes Microphone probe Resonance Tube The microphone probe is used for measuring sound pressure – especially in difficult accessible places. The microphone capsule is This apparatus is ideal for all resonance investigations in air columns placed at the end of a 8 x 950 mm carbon fibre tube. The microphone particularly the Salters MUS Activity 9. The main tube takes a high is almost a point-size and transforms pressure variations into voltage power sound wave generator unit plugged in to one end. The variations. Due to its sensitivity, the microphone is well suited for generator is driven by a standard laboratory signal generator and as experiments with our resonance tube SO150200. A cable is not the frequency is adjusted the various resonance modes are detected included – however it must be used with a HE190105 power supply, by increased loudness of the note. The open pipe can be studied which includes a cable. If it is to be used with the older HE110105 or a variable length closed pipe can be used by inserting the piston power supply, then a SO190109 DIN cable is required. 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. SO190205 ✓ £124.94 ea SO76355 £168.75 ea Microphone/Thermopile PSU Acoustic Probe for Resonance Tube The battery box is used as a power supply for microphones SO190205 & SO150205, and thermopile HE110100. The battery box turns on This accessory to our Resonance Tube (SO76355) consists of a sensitive automatically when a device is connected through the modular socket. microphone mounted in a acrylic tube. The apparatus enables the This is indicated by an characteristics of a standing wave in a pipe to be demonstrated LED. The analogue signal beautifully, by plugging the probe leads into the interface box is output via two 4 mm provided, which is then connected to a CRO to display the waveform. safety sockets. A cable with Alternatively, the unit can be connected to an AC voltmeter. As the modular plugs, and a 9 V probe is moved along the tube, nodes and antinodes can clearly be battery, are included. shown thus enabling wave calculations to easily be made. Requires 1 x PP3 battery (supplied). Probe Dimensions (L): 1100mm. Box HE190105 ✓ £99.94 ea Dimensions (L x W): 60 x 50mm. SPARES & ACCESSORIES £3.91 ea BA01970 PP3 Batteries Kundt’s Resonance Tube This apparatus is designed for demonstration of standing waves and for determination of the wavelengths of sound waves in air. The tube is supplied with a millimetre scale and a moveable piston for changing the length of the air column. (You will also need an external sound source - e.g. a 1 kHz tuning fork.) Dimensions (L x Dia.): 660 x 300mm. SO110110 £98.69 ea SO150210 £58.69 ea SPARES & ACCESSORIES £3.91 ea BA01970 PP3 Batteries timstar.com 525 [email protected] +44 (0) 3333 442 443

PHYSICS Vibrations & Waves 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. Length £218.75 ea For video demo: SO116140 1 m ✓ £312.50 ea timstar.co/RubensTube SO180150 2 m Rubens’ Tube Amplifier This unit can be used to amplify the signal for 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 input for connection 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. *lead sold separately SO180900 £62.44 ea SPARES & ACCESSORIES £4.99 ea SO190902 3.5 mm Plug-to-Plug Lead More products and offers available on our website! 526

Vibrations & Waves PHYSICS 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 An overhead projector type ripple tank for demonstration of various phenomena are projected onto a screen. Teachers notes and wave phenomena, including reflection, refraction, diffraction, and experiments are provided in a superb manual. interference. The unit comprises a shallow 40 x 40 cm tank with scratch-resistant acrylic window on the bottom, supported by four Kit comprises: adjustable legs. Two arms on the side hold an eccentric motor and bar assembly, onto which either two point dippers, or a plane-wave • Variable vibrator dipper can be attached. The motor and bar assembly is suspended by • Ripple tank springs so the vibration is not transmitted to the tank. A bright point • Wave dampers light source is held overhead, which shines down through the water in • Electronic stroboscope projection mirror the tank, and casts a shadow of the waves on the bench below. The • Screen (30 x 33 cm), Wave dippers, and Accessories following accessories are included: Concave, convex, & rectangular • Now comes complete with power supply and flashing LED strobe Perspex plates; curved reflector; two large & one small barriers; two point dippers; plane wave dipper; hand stroboscope; banana leads; instead of a rotating disc instructions. The motor requires a continuously variable 0-5 V DC PLEASE NOTE: Tripod not included (ST110120). power supply, and the lamp requires a 6 V 20 W supply. Alternatively, the ripple tank can be driven by the SO180324 ripple tank & LED driver. SO180320 £99.94 ea SPARES & ACCESSORIES £12.44 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 • CUSTOM – 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. SO180324 £187.44 ea SO86275 £743.75 kit SPARES & ACCESSORIES £32.44 ea +44 (0) 3333 442 443 ST110120 Retort Base timstar.com 527 [email protected]

PHYSICS Vibrations & Waves 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. Sine and square wave generator. Frequency range 5Hz to 50kHz in Switchable outputs of Sine, Square, Triangle and Pulse. The output four switched ranges plus a fine control. Accuracy typically ±10%. frequency ranges from 0.1 Hz to 100 kHz and is adjusted using both The output amplitude is continuously variable from zero to maximum the six-position ‘Range Hz’ switch and the multi-turn rotary ‘Frequency’ 8V peak to peak with maximum output power 1W into 8 ohms. The control. The actual output frequency is continuously monitored and output is taken from two 4mm sockets mounted on the front panel. An shown on the blue LED Display. The output amplitude of the waveform illuminated on/off switch is mounted on the rear panel adjacent to a ranges from zero to a maximum of 10 V peak-to-peak using the rotary fused IEC mains inlet. Enclosed in a robust metal case with a durable ‘Gain’ control. It can also be used as a stand-alone Amplifier with a powder coated finish. Dimensions (LxWxH): 179 x 190 x 85mm. 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 SI86190 £168.75 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. SI86185 £331.25 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 £162.50 ea SI180200 Colour £393.75 ea SI180202 £393.75 ea 528 Blue Clear More products and offers available on our website!

Vibrations & Waves PHYSICS Signal Generators continued Sound Demonstration Loudspeaker Frederiksen Student Function Generator This speaker is well suited to laboratory demonstrations using sound. A high quality, simple-to-use student signal generator with a range It comprises a 10€W RMS (20 W PMPO) 8Â€Ω impedance speaker in of applications. Three controls: waveform, frequency, and amplitude, a robust beech wood and acrylic frame, with 4€mm sockets mounted control the output. The waveform and frequency are displayed on the on the front. The design means that the loudspeaker can be used in built-in LCD. Output is via a pair of 4 mm sockets. It can be used for either a vertical or a horizontal position. Speaker diameter: 125 mm. most experiments involving sound or vibrations that would be carried Dimensions: 225 x 175 x 100€mm. out in school. ••• Overload protection LCD screen Power supply included SO106201 ✓ £81.19 ea SI180100 £318.75 ea Loudspeaker Signal Generator This 4W, 8 Ohm Mylar-cone loudspeaker comes mounted on an acrylic base, so This has to be the best signal/function generator available for that it can be used either vertically or educational use! Developed in conjunction with physics teachers and horizontally. The front of the speaker has designed specifically for education, this unit provides all the functionality a hard protective cover with drilled holes. you need for physics teaching. A really useful feature for those less Dimensions (Speaker Dia.): 60 mm. familiar with using signal generators is that for basic use, you just Overall Dimensions (H x W x D): 120 x 90 operate two buttons: One for frequency and one for amplitude - that’s x 40 mm. it! There is, of course, far more sophistication for those who require it. If you want to change waveform or to utilise the step and sweep modes, SO76380 £42.44 ea the display keeps you updated on the status of the generator. Unique frequency control: The frequency is set by a speed sensitive button. Loudspeaker Unit Turn slowly to set the display’s last digit, turn faster and the response accelerates - designed to work intuitively in practical experiments. Drives A compact loudspeaker unit fitted with a 10 watt, speakers, vibration generator etc. directly: The built-in 10 W power 8â—¦ driver. Connection is via colour coded 4mm amplifier effortlessly drives power appliances e.g. vibration generator. sockets. Fitted into a durable ABS case. 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 SI30820 £44.94 ea 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. 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 £693.75 ea SO86265 ✓ £37.44 ea +44 (0) 3333 442 443 [email protected] timstar.com 529

PHYSICS Vibrations & Waves 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 Comprising a FO140110 Student Timer, and two SO150400 4mm connection. Impedance 1Mâ—¦. Dimensions (L x W x H): 55 x 110 Microphones. A complete kit which allows measurement of speed of x 22mm. sound. Please note: squat retort bases, clapper board & metre rule sold separately. SO86270 ✓ £48.69 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 £374.95 kit £33.69 ea SPARES & ACCESSORIES £18.69 ea ST96274 Squat Retort Base SO150450 Clapper Board Microphone SO86235 £4.99 ea The small size of this microphone makes it ideal for experiments with Clapper Board sound interference. Other typical applications are measurement of sound frequencies, speed of sound experiments and the recording of This clapper board is ideal for producing the sharp sound pulse sound by data loggers. The microphone is supplied with a one metre required for measuring the speed of sound. Consists of two hinged cable which connects directly to the electronic counter TI68730 or timer hardwood blocks. Dimensions€(W€x€D€x€L):€27€x€50€x€300mm. 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. SO150450 £18.69 ea Frequency £69.94 ea Mini-Sound Level Meter SO150400 20 Hz-20 kHz £33.69 ea £18.69 ea This superb, robustly built mini digital sound level meter has a wide SPARES & ACCESSORIES dynamic range and gives virtually instant readings. Measuring range ST96274 40-130dB; ‘A’ frequency weighting; Fast time weighting; Precision 1/2 Squat Retort Base inch electret condenser microphone; 26mm 4 digit LCD display; Display SO150450 Clapper Board updates every 0.5 seconds; Auto backlight in dark environments; Max/ min hold; “Over” display for out-of-range input; Low battery indicator; Microphone Auto power off after 15 minutes, preserves battery life; Can be tripod mounted; Supplied with wind muffler and battery. A crystal microphone giving 10-20€mV output without batteries. Used for displaying students’ voices on a sensitive oscilloscope, or for speed • Range: 40 to 130 dB of sound experiments. Fitted with 4€mm colour coded sockets. • Resolution: 0.1 dB • Accuracy: ±3.5dB (94 dB @ 1 kHz) • Frequency range: 100-10,000 Hz • Frequency Range: 100 Hz~8 kHz • Impedance: 200 Ω • Power: 9V PP3 battery (supplied) • Sensitivity: 1 mV/Pa/kHz • Dimensions (L x W x H): 128 x 51 x 32 mm • Weight: 131 g SO68560 £37.44 ea SO106212 ✓ £61.88 ea SPARES & ACCESSORIES £3.91 ea 530 BA01970 PP3 Batteries More products and offers available on our website!

Vibrations & Waves PHYSICS Sound continued Tuning Forks Set Sonometer, Three Wire Pattern Aluminium. Boxed set of 8. Range C.256 Hz to C512 Hz. A hollow wooden sounding box with scales divided in mm between fixed bridges over which three wires are stretched. To one wire, a spring balance reading to 100 N x5 N is fitted and the tension exerted and measured can be finely adjusted by wing-nut. Another wire passes over a pulley and can be loaded as desired. A third wire is provided for 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 TU16949 Quantity £44.94 set 8 Large Demonstration Tuning Fork This large, demonstration tuning fork is really useful for demonstrating how tuning forks work. Although the tuning fork is not audible, due to its low frequency (around 5.4 Hz), the oscillations are easily observed visually. Made from nickel-plated steel. Length: 750 mm. SO180350 Sonometer £99.94 ea SPARES & ACCESSORIES £14.94 set SO180352 Set of Six Wires Sonometer Pickup TU170900 £37.44 ea This Sonometer pickup contains a single guitar-type magnetic pickup. Buzzer in a Vacuum Vessel When placed under a moving steel wire, such as on a Sonometer, an emf is induced in the pickup which can be displayed on an oscilloscope. An effective and compact alternative to the traditional Bell in a Jar Period, frequency and amplitude apparatus. Comprising a strong acrylic vessel, with a simple buzzer measurements can then be taken circuit. The vessel has an outlet through which air can be evacuated from the oscilloscope screen. The using a vacuum pump (not included). The buzzer is mounted on whole unit, constructed in clear foam to reduce transmission of sound to the vessel walls. When the acrylic, measures approximately air is evacuated, the sound of the buzzer is attenuated, as there is no 90 x 40 x 20 mm and comes air through which the sound is transmitted to the walls of the vessel. with integral 4 mm sockets and Dimensions (H x dia): 14 x 10 cm instructions for use. SO76390 £29.31 ea Doppler Effect Unit 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 source requires two AA batteries (not supplied). The unit is designed to work with a microphone connected to a computer running sound-editing software such as Audacity (which is free open- source software). SO106208 £41.19 ea SO180800 £58.69 ea +44 (0) 3333 442 443 [email protected] timstar.com 531

PHYSICS Vibrations & Waves 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. Bell Jars, Socket Joint Neck Simax borosilicate glass. Shoulder height is 50 mm below the height in the table. 29/32 socket. BE02405 Height Diameter £88.69 ea 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. • For use with 150 mm diameter bell jars only Type £87.44 ea SO180500 Bell in a Jar Experiment £68.69 ea SPARES & ACCESSORIES £29.94 ea SO180505 Pump Plate SO180510 Bell Jar SO68500 £137.50 ea Vacuum Pumps More products and offers available on our website! See page 106 532

Vibrations & Waves PHYSICS Vibration Generators & Accessories Longitudinal Wave Spring Vibration Generator, Standard Version This quality spring is ideal for producing 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 £14.94 ea Vibration Generator, Premium Piano Wire Loop A generator for producing mechanical vibrations when used with a For use with SI30825 for demonstrating function generator. The input is fed to a coil which is mounted within the relationship between frequency and the the field of a cylindrical permanent magnet. The unit is fuse protected. number of vibrational nodes. Dimensions Locking mechanism protects from shock during transit and when (Dia.): 290mm. changing accessories. Max input 6V/1A. Dimensions (L x W x H): 100 x 100 x 120mm. SI30825 £124.94 ea SI68180 £9.04 ea £2.01 pk £12.38 set SPARES & ACCESSORIES Resonance Strips Set EL06689 Fuses, Quick-Blow, Glass Steel strips giving six vibrating lengths. For use with SI30825. Signal Generators Fundamental frequencies at 11, 15, 21, 36 and 50€Hz can See page 528 be readily observed. Interesting standing waves can be seen up to 300€Hz and heard up to 900€Hz. 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 £2.49 ea SI68182 Type £11.68 ea SI68184 £18.06 ea +44 (0) 3333 442 443 Square Round timstar.com 533 [email protected]

PHYSICS Vibrations & Waves Stroboscopes Stroboscope Hand Stroboscope, Simple This stroboscope has a wide range of applications, having high accuracy and a digital readout of selected flash rate. Applications A black hardboard disc with 12 slots and finger hole, pivoted on a ball include dynamics experiments, vibration modes in wires and sheets, bearing mount which acts as a handle. Dimensions (Dia.): 255mm. Slot measuring speeds and frequencies and demonstrating persistence of Dimensions (L x W): 50 x 3mm. vision. Triggering is by internal switching or by an externally applied waveform. Built into a robust metal case with a durable powder coat finish. An illuminated on/off switch is mounted on 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. •Specification: Flash Rate: 1 to 10 flashes/sec, 10 to 100 flashes/sec, 100 to 250 flashes/sec. • Display: 13 mm 7 segment LED. • Flash Power: 5 W (mean). • Accuracy: ±2 % on each range. • Flash Duration: 12 µs. • Electrical Supply: 220-240 V AC 50-60 Hz. • Dimensions (L x H x W): 255 x 220 x 110mm • Weight: 3.4 kg OP11898 ✓ £13.06 ea Mini Stroboscope Battery operated LED plastic strobe with speed control and on/off button. Made from robust plastic with hanging bracket. Flashes up to 6 times per second. Requires 4x AA batteries. Dimensions (WxHxD): 82 x 50 x 140 mm. SO96194 ✓ £318.75 ea SO190415 ✓ £18.69 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 This digital xenon stroboscope is a lightweight, sturdy and compact purposes. With the stroboscope and a camera, free fall, projectile instrument which features a digital, variable flashing rate adjustment trajectories etc. can be analysed. Harmonic motion like standing waves and external triggering facility. The bright xenon tube makes it ideal on a string can be “frozen” or made to move in slow motion. Another for educational uses such as wave, motion and vibration experiments. standard application of the stroboscope is determining rotational Supplied with mains lead. Specifications: 60 to 18,000 rpm, 1 to speeds. The flash rate can be regulated from 1 to 300 flashes per 300 Hz, External triggering signal, Power supply: 240 V AC, 50 Hz. second, corresponding to 60 to 18,000€rpm. Digital reading with switch Dimensions (L x H x W): 215 x 140 x 150mm. 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 £293.75 ea SO150100 ✓ £518.75 ea 534 More products and offers available on our website!

Oscilloscopes PHYSICS Picoscopes Dual Channel Picoscopes 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 A • Bandwith (MHz): 10 B • ETS (GS/s): 5.0 • Sampling rate (MS/s): 100 timstar.com 535 • 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 O • Clock Frequency: 2 MHz • Bandwidth: DC to 1 MHz EL81422 Type £156.19 ea EL81424 ✓ £243.75 ea A PicoScope 2204 B PicoScope 2205 +44 (0) 3333 442 443 [email protected]

PHYSICS Oscilloscopes Digital Oscilloscopes PC Oscilloscope, 60 MHz PC Oscilloscope A high bandwidth PC oscilloscope offering all the features of a standard oscilloscope but with the added benefits of compact size, portability and A PC based oscilloscope with all the features of a standard oscilloscope easy to use software (included). Minimum PC requirements: Pentium(R) plus the benefits of compact size and inclusive software which is simple 4 2.4 GHz; 1 GB RAM; 1 GB minimum disk space OS: Windows XP/ and intuitive to use. Minimum PC Requirements: Pentium (R) 4 2.4 Vista/7/8 Ports: USB 2.0; USB 1.1 Display Resolution: 1024 x 768 GHz processor; 1GB memory; 1GB minimum disc space; Display Resolution: 1024 x 768; USB2.0 port Operating system: Windows XP, • USB isolation - less signal inference, more PC protection Windows Vista, Windows 7 To download the software, go to timstar.co/ • USB powered OS150000-software • Ultra-thin body design for easy storage & portability OS150000 £156.25 ea EL170110 £293.75 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 536 More products and offers available on our website!

Oscilloscopes PHYSICS Digital Oscilloscopes continued Digital Storage Oscilloscope, 60mHz SDS1022 Oscilloscope The Voltcraft DSO-1062D 2-Channel Oscilloscope is an entry-level model in the field of digital storage oscilloscopes. The device has A digital storage oscilloscope, designed with simplicity in mind. The two channels with a bandwidth of 60MHz and a real-time sampling vast array of advanced measuring options found in most digital rate of max. 1 GS/s and a memory depth of 512 kpts. Up to 1Mpts oscilloscopes is mostly omitted, leaving only the essential features are available if only one channel is used. The DSO-1062C is almost required in schools. This means the unit is very accessible for students unbeatable value for money with its large 17.7cm 800 x 480 pixel and teachers alike. colour display and USB host for storing data on an optional stick. The DSO-1062D is completed by a USB interface, multilingual Help menu, • 7” colour screen (800 x 600) extensive trigger possibilities, automatic measuring functions including • 20 MHz Bandwidth FFT and standard software included in the delivery. • Sample rate: 100 MS/s Specifications and Features: • Dual channel • Automatic measurement • 60MHz bandwidth • Dimensions: 301 x 152 x • 1 GS/s real time sampling rate, equivalent to 25GS/s • Supplied with Voltcraft DSO-1062D, 2 probes (each 1:1 / 10:1), 70 mm Power cord USB cable, software, detailed instruction manual OS180100 £243.75 ea • (English), Quick Start Guide (Multilingual) Colour Digital Oscilloscope 2 probes (each 1:1/10:1), Power cable, USB cable, Software, Detailed user manual (English), Quick instructions (Multilingual). The SDS5032E is a general purpose 2 channel digital oscilloscope with a large 200mm colour display, making it ideal for education and • Accuracy: ±3% industrial environments. Complete with USB output to PC. • Bandwidth: 60MHz • Calibration possible to: ISO / DKD Specifications and Features: • Channel type: 2 • Dimensions: 313(W) x 142(H) x 108(D)mm • Bandwidth: 30MHz • Display type/resolution: 800 x 400 pix • Sample Rate (real time): 250MS/s • Displays: LCD • Horizontal Scale (s/div) 4ns/div~100s/div, step by 1~2~4 • Input coupling: DC/AC/GND • Rise Time (at input, typical) ≤11ns • Input impedance: 1MΩ • Channels: 2 + 1 (external) • Input voltage range: 2mV to 100V (DC/ACpp) • Display: 20cm (8”) colour LCD, TFT display, 800 x 600 pixels, • Interfaces: 1x USB • Mathematics functions: Pk-pk, max, min, effective value, cyc. RMS, 65535 colours Hz, period, rise/fall time, pos/neg half-wave • Input Impedance: 1MΩ ± 2%, in parallel with 15pF±5pF • Channel Isolation: 50Hz: 100: 1, 10MHz: 40: 1 • Max. power consumption: 30W • Max Input Voltage: 400V (PK - PK) (DC+AC, PK - PK) • Memory depth: 1 MPts (single), 512 kPts (dual) • DC Gain Accuracy: ±3% • Operation type: CH1, CH2, dual, XY • Record Length: 10K • Power supply: 100V AC to 240V AC • DC Accuracy (average): Average≥16: ± (3% reading + 0.05 div) • Resolution: 8-bit • Sampling rate: 1GS/s (single mode), 500 MS/s (dual mode) for △V • Screen size: 17,7cm • Timebase range: 4ns to 40s/div • Probe Attenuation Factor: 1X, 10X, 100X, 1000X • Triggering: DC, AC, HF, LF, noise, EXT, EXT/5 • Sample Rate / Relay Time Accuracy: ±100ppm • Type (manufacturer type): DSO-1062D • Input Coupling: DC, AC, and GND • Vertical deflection: 2mV to 5V/div • Vertical Resolution (A/D): 8 bits resolution (2 Channels • Weight: 2kg simultaneously) • Vertical Sensitivity: 5mV/div~10V/div (at input) • Trigger Type: Edge, Pulse, Video, Slope • Trigger Mode: Auto, Normal, Single • Trigger Level: ±6 divisions from screen centre • Line / Field Frequency (video): NTSC, PAL, and SECAM standard • Waveform Math: +, -, x, ÷, FFT • Waveform Storage: 15 waveforms • Lissajous Figure Bandwidth: Full bandwidth • Lissajous Figure Phase Difference: ±3 degrees • Communication Interface: USB, USB flash disk storage, Pass / Fail, LAN, VGA (optional) • Power Supply 100V - 240V AC, 50/60Hz, CAT II • Power Consumption <18W • Fuse 2A, T class, 250V • Battery not supported • Dimension (WxHxD) 348 x 170 x 78 (mm) • Weight: 1.50 kg EL101460 ✓ £368.75 ea EL160650 £468.75 ea +44 (0) 3333 442 443 [email protected] timstar.com 537

PHYSICS Oscilloscopes CROs Dual Trace Oscilloscope Oscilloscope, Single Channel This dual channel oscilloscope offers exceptional value in terms of Our single channel value oscilloscope features an 8 x 10 division price and performance. With frequency bandwidth of 10 or 20 MHz screen, X-Y modes and built in probe calibration signals. Triggering bandwidth and sensitivity ranges of; 1 mV/div - 1 V/div or 5 mV/div to modes are Auto, Norm and TV and X1/X10 probes are included. 5 V/div. Display size: 150 mm diagonal flat screen. Specifications and Features: Specifications and Features: • Single channel, 10 MHz • Dual channel, 20 MHz • Screen size 8 x 10, 1 div = 6 mm • High sensitivity • Vertical input 5 mV - 5 V/div • Full 80 x 100 mm rectangular screen with scale illumination • Horizontal 0.1 S/div - 0.1 uS/div • Excellent triggering facilities • Triggering mode Auto, Norm, TV • Ideally suited to education applications • Trigger source INT, LINE, EXT • A well presented front panel ensures quick and easy operation • Input voltage 110/220 V +/- 10 % AC • Variable hold-off function • Dimensions (W x L x H): 220 x 270 x 90mm • Convenient X-Y operation mode allows phase difference between • Weight 3 kg • measurements between two waveforms Carrying handle, which may be locked into any position, also • doubles as 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 EL18513 £7.44 ea EL18514 BNC Plug to BNC Plug £10.31 ea 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 £8.74 ea SO86270 ✓ £48.69 ea 538 More products and offers available on our website!

539 PREPROOM SUPPLIES Brushes540 Storage548 Cleaning Products 541 Lubricants549 Draining547 Soldering550 Lab Expert Stock Database 547 Hand Tools 552 Staffroom Essentials 548 Power Tools 558

PREPROOM SUPPLIES Brushes Artist Brushes Cylinder Brushes Squirrel Hair in metal mount on wood handle. Nylon with fan shaped end, on strong wire handle. Type BR03455 Height Length Diameter ✓ £3.74 ea BR03460 £4.07 ea Size No. 4 120 mm 650 mm 65 mm Size No. 6 141 mm 650 mm 75 mm BR03540 ✓ £3.13 ea BR03545 £3.69 ea Flask Brushes Paint Brushes Bristle on curved wire. Curved head with hinged joint and rubber Bristle, flat form in metal mount on wooden handle. covered stem on wooden handle. BR03465 Height Length Diameter £8.00 ea 100 mm 100 mm 50 mm BR03550 Width £2.44 ea Test Tube Brushes BR03552 ✓ £1.34 ea 12 mm Fan shaped end on wire handle. 25 mm Beaker Brushes BR03470 Type For Quantity £6.61 pk BR03475 £6.46 pk Bristle, loop form on wooden handle. BR03480 Bristle 10-12 mm tubes 10 £8.82 pk BR03485 Nylon 10-12 mm tubes 10 £6.83 pk Bristle 16-25 mm tubes 10 ✓ Nylon 16-25 mm tubes 10 Test Tube Brushes Nylon with cotton tip on wire handle BR03400 Length Diameter £2.70 ea 150 mm 70 mm Bottle Brushes BR03490 For Quantity ✓ £9.09 pk BR03495 £10.40 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 £2.49 ea Length Diameter Quantity BR03415 £2.40 ea BR03425 Bristle 64 mm 300 mm 45 mm £2.36 ea 400 mm 3 mm 10 BR03435 Nylon 64 mm 300 mm 45 mm £2.39 ea 600 mm 6 mm 10 Nylon 75 mm 350 mm 50 mm Nylon 100 mm 400 mm 65 mm ✓ BR03500 ✓ £14.31 pk BR03505 £14.94 pk Burette Brushes Pipecleaner Bristle on wire handle, to fit all size burettes. Height Length DiameterQuantity Length Diameter Quantity 100 mm 100 mm 19 mm 10 150 mm BR03445 £16.81 pk BR03514 3 mm 100 ✓ £2.49 pk 540 More products and offers available on our website!

Cleaning Products PREPROOM SUPPLIES Dustpan & Brush set Buckets Bucket Plastic dustpan and brush set. Polythene with handle. BU03605 Capacity £3.88 ea 9 litres CL04268 £2.44 ea Bucket Bins Black polythene with strong wire handle and wooden hand grips. Waste Bin, Swing Top 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 £5.19 ea 14 litres Buckets White polypropylene with snap-on lids, ideal for storage or collecting samples. WA17450 £18.69 ea Bin Liners Bin Liners, Black BU03620 Capacity ✓ £2.49 ea BU03622 £3.25 ea Light duty black refuse sacks for general purpose use. Supplied as a roll BU03624 2.5 litres £6.06 ea of 10 bags. Dimensions: 457 x 737 x 965mm. 5 litres 10 litres WA170800 £2.25 pk Cloths Cleaning Cloths These high performance Wypall reusable wipers are suitable for wet and dry cleaning and wiping use in light duty areas. Designed for precision wiping that includes glass and tight corners. You can trust these wipes to wipe better and last longer thanks to the Hydroknit* material technology. Waste Paper Bin Liners, White CL160100 £7.44 Biodegradable white pedal bin/waste bin liners. Liners will decompose Cleaning Cloths completely, leaving no harmful residues. Supplied as a roll of 50 bags. Dimensions: 280 x 457 x 457 mm J Cloth’ strong, durable cleaning cloths, suitable for washing, dusting and polishing. Rapid drying hygienic wipes. Available as a pack of 50. WA170810 ✓ £1.69 pk CL160750 £13.06 pk +44 (0) 3333 442 443 [email protected] timstar.com 541

PREPROOM SUPPLIES Cleaning Products Cloths continued Cotton Wool Cotton Wool, Absorbent Cleaning & Spillage Cloth Roll Very absorbent, high grade cotton wool. Ideal Roll of double creped, strong, soft wipes with good absorbency. Great for dressings and wound care. 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. Quantity £7.33 ea CO05000 500 g CL150202 £25.56 ea Cotton Wool, Non-Absorbent Non-absorbent white. In packs of 500g. Tea Towels, Assorted Absorbent fabric tea towels. High quality, machine washable, non-fray. Check design, size 450 x 700mm, pack of 10 assorted colours. Quantity £19.94 ea CO05005 500 g Cotton Wool Balls, Absorbent Soft, absorbent cotton wall balls, useful for cleansing, germinating seeds etc. Made from 100 % pure cotton and sold as a pack of 100 balls. Quantity £19.94 pk CL150204 10 CO170100 £2.00 pk Dish Cloths Swabs Open mesh. Pack of 10. Swabs, Non-Sterile CL04245 Wood shafts non-sterile swabs with cotton tips. 542 £8.69 pk Quantity £1.86 pk CO120100 100 More products and offers available on our website!

Cleaning Products PREPROOM SUPPLIES Hand Cleaners Foam Back Scourers Nail Brush Abrasive foam back scourers for removal of grime and burnt residues Traditional shape bristled nail brush for etc. Pack of 10 scourers. removing dirt and grime from under nails. £1.06 ea £4.38 pk BR161111 SC160100 Washing Up Washing Up Liquid, Economy Heavy Duty Scouring Pad Economy high strength washing up liquid. Heavy duty scouring pads. Can be used wet or dry to remove dirt and • Cuts through grime and grease scuffs. Pack of 3. • Gentle formula for skin softness • Fresh original fragrance • 5 litre bottle Quantity £8.16 ea CL150102 5 litre SC180102 £4.38 pk Fairy Washing Up Liquid, 5L Dishwasher Salt Suitable for general cleaning of dishes and utensils. Easily removes grease and is kind on hands. This dishwasher salt helps you avoid scale deposits on your crockery, cutlery and kitchenware. It effectively softens your water to boost the • Fairy Original Washing Up liquid cleaning performance of your detergent by preventing spots and • Lasts up to 50% longer than other brands watermarks on your dishes. • Super concentrated formula means a little goes a long way • Cuts through grease and dirt with ease • Leaves utensils sparkling and fresh • 5 litre economy pack Quantity £31.19 ea CL04227 Quantity £3.03 ea CL150104 5 litre 2 kg Washing Up Brush Decomatic Tough bristled washing up brush for general washing up duties. A phosphate free, liquid surfactant specially formulated for use in laboratory glassware washing machines. It is alkaline. Not suitable for use on non-ferrous metals. BR160100 £1.24 ea CL04190 Quantity £43.69 ea 5 litre +44 (0) 3333 442 443 timstar.com 543 [email protected]

PREPROOM SUPPLIES Cleaning Products Multipurpose Cleaners Disinfectant, Pine Decon 90 Pine scented disinfectant. 5 Litre. 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. Quantity CL04220 Quantity £6.55 ea 5 litre 1 litre CL04200 5 litre £18.69 ea Lipsol Concentrate Detergent CL04201 £72.44 ea A surface active cleaning agent and radioactive decontaminant for Teepol glassware, ceramics, rubber, plastics, stainless steel and ferrous metals. Phosphate and enzyme free, fully Concentrated detergent. rinsable and free from chlorine bleaches. Recommended for cleaning by soaking and for use in ultrasonic baths. Lipsol has been independently tested and shown to be non- hazardous and meets the latest requirements for biodegradability. For normal cleaning use a dilution of 2-5%. A 5% solution has a pH of 10.5. CL04206 Quantity £37.44 ea Quantity 20 litre £3.90 ea 5 litre £29.94 ea CL51200 £37.44 ea Virkon Disinfectant Hand & Surface Disinfectant Spray A Virucidal disinfectant that kills all Developed by doctors and used by professionals, this NHS approved 17 virus families. It is an excellent and alcohol free Hand & Surface Disinfectant Spray can be used on all bactericide and fungicide and can kinds of surfaces, equipment, food preparation areas and skin. Kills be applied in powder form direct to Swine Flu and MRSA. Dermalogically tested to be safe on skin and spillages of blood and other bodily contains a unique, patented biocidal formulation, containing 6 biocides fluids. It easily dissolves to make an all working independently of each other to reduce the risk of germs inexpensive liquid disinfectant. developing a resistance. Not suitable for use on dirty or soiled hands - these must be cleaned first by washing or using wipes to remove the CL04222 Quantity dirt. The spray can then be applied for disinfecting purposes. CL04223 50 g • MRSA killed within 10 seconds - works for a 500 g • further 72 hours Bleach Kills a vast range of germs and bacteria including MRSA, Staphylococcus aureus, Powerful and effective thick Bleach. Ideal for Listeria, Salmonella, HIV, Herpes, Influenza cleaning toilets and washrooms. 5 litre. (H5N1), Hepatitis B, Hepatitis C and • Norovirus. Proven to kill 99.999% of germs within 10 • seconds, goes on working for 24 hours. Tested to European Standard EN1276 and • prEN 12054. Super fast, super effective formulation - making the Disinfectant Spray one of the most effective products on the market. • No bleach used in the formulation. • Skin safe and dermatologically tested. • Supplied as a spray bottle CL04215 Quantity £6.95 ea Quantity £7.77 ea 5 litre SA106014 500 mL 544 More products and offers available on our website!

Cleaning Products PREPROOM SUPPLIES Hand Cleaners Universal Sanitising Wipes Clinell Hand Sanitiser Gel Developed by doctors and used by professionals, these NHS approved and alcohol free Universal Sanitising Wipes can be used on all kinds Using a formula developed by doctors, the Clinell of surfaces, equipment, food preparation areas and also skin. Kills range now includes a new hand sanitiser gel which Swine Flu and MRSA. Dermalogically tested to be safe on hands, these contains natural moisturisers, aloe vera and green tea antimicrobial wipes act as both disinfectant and detergent meaning they extract to leave hands feeling clean and refreshed with are one of the most effective antimicrobial wipes on the market. no sticky residue - but still has a 99.999% kill rate. The unique blend of 70% alcohol and biocides it contains • MRSA killed within 10 seconds - works for a further 72 hours give a superior level of effectiveness against germs. • Kills a vast range of germs and bacteria including MRSA, The two sizes available both come supplied in a pump action bottle. 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. CL110750 Quantity £5.29 ea CL110752 £7.79 ea 250 mL 500 mL Antibacterial Liquid Soap Cussons Pure antibacterial hand wash dispenser. Quantity £2.16 ea Quantity £14.94 pk CL150100 500 mL dispenser SA106006 200 Handwash, Anti-Bacterial Antibacterial Wipes, Child Friendly This Antibacterial Hand Wash is an unperfumed hand soap that kills Developed by doctors and used by professionals, these NHS approved germs and leaves hands feeling fresh, clean and supple. Effective alcohol free antibacterial hand wipes are safe to use on children’s against bacteria, it has added moisturisers that are kind to the skin hands. Kills Swine Flu and MRSA. Contains a unique, patented biocidal and suitable for a range of skin types. The easy to use pump action formulation, containing 6 biocides all working independently of each dispenser ensures a clean and efficient release of liquid, making it other to reduce the risk of germs developing resistance. economical and cost effective. • MRSA killed within 10 seconds - works for a further 72 hours • Unperfumed antibacterial hand wash • Kills a vast range of germs and bacteria including MRSA, • Kills 99.9% of bacteria • Handy dispensing pump Staphylococcus aureus, Listeria, Salmonella, HIV, Herpes, Influenza • Suitable for all skin types and ages (H5N1), Hepatitis B, Hepatitis C and Norovirus. • Added moisturisers leaves hands soft • Leaves hands hygienically clean and fresh • Can be used: After handling raw food; After using the toilet; After touching any dirty surface; After contact with pets and animals; After Quantity £6.03 pk visiting medical centres and hospitals; Before and after eating; Before CL150105 2 x 250 mL dispensers preparing food. Wipes • Safe to use on children’s hands • Comes in a convenient small sachet - ideal for carrying with you at Surface Disinfectant Wipes all times. Surface disinfectant wet wipes, perforated for ease of dispensing. Non- flammable, non-toxic, food and skin safe. Individual wipe size: 20cm x • Proven to kill 99.999% of germs - one of the most effective 23.5cm. Tub of 1000 wipes. 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. CL150200 £22.44 ea SA106010 £13.06 box +44 (0) 3333 442 443 [email protected] timstar.com 545

PREPROOM SUPPLIES Cleaning Products Muslin Paper Hand Towels, Z Fold Type Muslin These popular 1 Ply Z-fold hand towels are used regularly in schools, Absorbent white, supplied as a hospitals and public washrooms etc. and made from 40gsm 1 roll. Dimensions (W x L): 900mm ply paper. Each towel is interleaved using 2 folds, so they present x 5 metres. themselves fully open when removed. Each case consists of 15 sleeves of 200 towels giving 3000 towels per box. Size: 23cm x 22.5cm open; 23cm x 7.5cm folded. Ideal for use with towel dispenser CL120105. CO05040 £23.69 ea Lens Wipes Quantity £29.94 box CL151100 15 sleeves (200 towels) Lens Cleaning Tissues, ‘Whatman 105’ Paper Towel Dispenser For use with our paper hand towels, this paper towel dispenser is strong, versatile and ideally suited for interleaved or C-fold paper hand towels. The dispenser also incorporates a display window to view the fill level within. Design may vary slightly. CL04270 Dimensions Quantity £6.20 pk CL04280 £54.94 pk 15 x 10 cm 25 sheets £18.69 pk 30 x 20 cm 100 sheets Tissues CL120105 £39.94 ea Tissues, Medical Wipes Two ply absorbent white tissues. 10 cartons of 80 sheets. Sheet size 186 x 108 mm. CL04255 Paper Roll Tissues Standard sized, 2-ply, blue centre-feed paper towel rolls. Made from premium 2 Ply 100% recycled blue paper. Ideal for wiping spills or White, 2 ply absorbent tissues. drying hands. Perforated every 40cm, giving 375 large sheets per roll, Dispenser carton of 100 tissues. these are supplied hygienically shrink-wrapped in packs of 6 rolls. Size: Dimensions: 220 x 210mm. 200mm wide approx. x 150m long. Colour: blue. CL04250 £3.74 ea Quantity CL110756 6 rolls Paper Towels £31.81 pk Centre Feed Roll Dispenser Paper Towels For use with our centre feed paper towel rolls, A good quality single ply, 40gsm C-Fold paper hand towel at a these€centre feed roll dispensers combine excellent competitive price, giving excellent value for money. These paper towels functionality with robust construction. are ideal for schools, general washroom and other high use areas. Towel size: 23 x 31cm when open and 23 x 9.5cm folded. Colour: blue. • Robust construction makes them long-lasting Packed in sleeves of 179 towels, with 15 sleeves (packs) per box (total • Compact form saves space 2,685 towels). Please note: Sleeve pack • Smooth, rounded surfaces: easy to clean size and numbers may vary but overall, • Lockable and easy to refill. contents will remain the same. Quantity £32.44 box CL120100 £36.81 ea CL110754 15 sleeves (179 towels) More products and offers available on our website! 546

Draining ● Lab Expert Stock Database PREPROOM SUPPLIES Draining Rack Wall Mounted, 28 pegs Draining Rack with Moveable Pegs Epoxy-coated, steel wire wall mounted draining Lightweight easy to assemble plastic draining rack covered with 28 pegs each 70 mm long. racks designed to be wall mounted. Pegs simply The pegs are arranged in two rows of five pegs slot into place on the back board and are and three rows of six pegs. Dimensions 406 x spaced to allow various sizes of labware to fit 304 mm. on to the rack. Water is collected in the trough at the base of the rack and drains away via a rubber tube which can be directed into a nearby sink or container. Supplied with wall mounting accessories. A set of narrower pegs for test tubes volumetric flasks etc. is also available. Pegs supplied are 120 x 16mm, narrow pegs 100 x 6mm. Dimensions: 650 x 450mm. DR190300 ✓ £31.19 ea DR81200 Type £212.50 ea Rack with Standard Pegs Draining Rack, Dual Panel Sinksafe’ Glassware Protection Mats Epoxy-coated steel wire dual panel draining rack, it can be free standing or used as two Composed of 50mm square modular units wall mounted racks. Contains 122 pegs each which connect together to form a platform peg is 70 mm long arranged as eight rows to cover the base of any sink. It provides a of ten pegs ( four each side) and six rows of firm cushion to break the fall of glassware. seven pegs ( three each side). Dimensions The mesh design allows unhindered 560 x 580 x 330 mm. passage of liquids and the small contact area of the legs prevents capillarity retention of chemical solutions. Chemical- resistant polypropylene construction. Pack of 20 individual parts, 50 x 50mm each. Dimensions: 250 x 200mm. DR190308 ✓ £49.94 ea DR91200 Quantity £19.31 pk 20 pieces Lab Expert Stock Database Labexpert Prep Room Stock Database Labexpert Prep Room Stock Database Starter Pack with Barcode Scanner Updated and improved version (V2.0.4) of this popular software which The complete stock control solution - starter pack with barcode is more refined and compatible with the new GHS/CLP European efficiency! This pack comes complete with all you need for efficient Regulations (Regulation (EC) No 1272/2008 on classification, barcode labelling and scanning of prep room stock. Includes custom labelling and packaging of substances and mixtures) including the new printed high quality original ZEBRA polyester scratch proof and acid pictograms for labelling chemicals. resistant barcode labels to identify all your chemicals and equipment, USB laser barcode scanner for fast efficient and reliable results and of Key Features: course the Labexpert UK prep room stock database software which is specifically designed for school and college science departments. • Familiar Microsoft Access format • Latest EU GHS/CLP Regulation pictograms Includes: • Provides hazard and storage information • Simplifies annual stock taking • Software V2.0.4 (site license) • Take pictures to include in the item record • Laser barcode scanner (USB) • Identifies items that need re-ordering • 530 pre-printed barcode labels for chemicals • Various build-in reports • 500 pre-printed barcode labels for equipment • Optional barcode reading • Highlights items requiring portable appliance testing and • indicates next test Includes 530 chemicals already listed with all relevant information Minimum requirements: • PC - Intel Pentium II/Celeron processor or equivalent • Microsoft Windows 98 or later operating system or Microsoft Windows NT • 64MB RAM, CD ROM Drive • Microsoft Office 2000/2002 or later needs to be installed including the components of Access 2000/2002 or later • Adobe PDF Reader • SVGA or above, display at 600 x 800 or above • Barcode reader (optional) LA110250 £374.99 pk SO20000 £249.94 ea +44 (0) 3333 442 443 [email protected] timstar.com 547

PREPROOM SUPPLIES Staffroom Essentials ● Storage Kitchen Appliances Fans Electric Kettle Hand Held Fan An automatic fast boiling jug kettle, with Easy grip handle and on/off switch. automatic switch off when boiling and safety Powered by 2 x AA batteries. boil-dry cut out. Capacity: 1.7L. FA07234 Height Diameter £5.51 ea 100 mm 65 mm £2.21 pk KE09604 ✓ £19.94 ea SPARES & ACCESSORIES BA01983 2 x AA Batteries Electric Kettle, Black, Cordless Oscillating Fans Stylish 3 kW rapid boil cordless kettle with Free standing, three bladed fans which are visible fill window and illuminated on/off protected by a wire cage. Can be tilted to a switch. convenient angle. For 220/240V. KE160100 £33.11 ea Type Diameter Liquidiser FA07230 2 speed 23 cm £27.44 ea FA07232 3 speed 30 cm ✓ £33.06 ea White, 1.5 litre capacity food blender with removable stainless steel blades for easy Kitchenware cleaning. The unit has 2 speeds, pulse function, and non-slip feet. 400 W rating. Washing Up Bowl Rectangular washing up bowl. Measurements: 160 x 390 x 320mm Shape Dimensions Depth MI11180 £49.94 ea BO03232 Square/ 380 x 310 mm 140 mm £6.19 ea Rectangular Storage Re-Sealable Polythene Bags Ice Cube Trays Ice Cube Tray Ice cube tray - makes 12 cubes per tray. TR16224 £1.88 pk BA01020 Type Dimensions Quantity £2.44 pk £1.56 pk BA01021 Plain 89 x 114 mm 100 £2.88 pk Polythene Bags £3.69 pk BA01025 (W x L) £4.38 pk £4.38 pk BA01026 White write on 89 x 114 mm 100 £6.50 pk Polythene Bags £6.19 pk BA01027 panel (W x L) £9.99 pk £8.69 pk Plain 127 x 191 mm 100 BA01000 Dimensions Quantity ✓ (W x L) BA01010 White write on 152 x 229 mm 100 BA01015 100 x 150 mm (W x L) 100 panel (W x L) BA01016 200 x 250 mm (W x L) 100 White write on 203 x 279 mm 100 ✓ BA01017 200 x 300 mm (W x L) 100 panel (W x L) 300 x 375 mm (W x L) 100 450 x 600 mm (W x L) 100 548 More products and offers available on our website!