Timstar - International Catalogue 2019-20

Tripods LABWARE Triangles Tripod with Gauze Triangles The stand has a heavy wire gauge top and made of steel wire, chrome Pipeclay tubes on iron wire. plated. Designed to accommodate most standard spirit burners. Supplied in a pack of 10. Dimensions (H): 90mm. TR16250 Dimensions £4.91 pk TR16255 ✓ £6.08 pk TR16260 39 mm (Length of side) TR170300 50 mm (Length of side) £6.23 pk 63 mm (Length of side) £6.81 pk 75mm (Length of side) Tripods TR130700 £4.29 ea Tripod, Economy Tripod, Circular Nickel plated steel rod, triangular top with Circular tripod stand with a sheet top. Ideal for use with spirit burners. plastic feet. Supplied without burner. Dimensions (H x Inner Dia.): 110 x 95mm. ST14260 Height Width £2.49 ea ST14261 £4.41 ea 200 mm 125 mm 200 mm 150 mm TR130705 Tripod, Standard Tripod, Tall Stainless steel rod with plastic feet. Triangular top. Taller tripod, suitable for Gas Cartridge Burners BU160100 & BU03821. Nickel plated steel. £4.26 ea £5.31 ea ST14262 Height Width 200 mm 125 mm Tripod, Premium Steel, with triangular flat top. Height Width £5.83 ea TR130715 260 mm 125 mm ST14265 Height Width ✓ £6.70 ea Tripods 200 mm 125 mm Gauzes, Burners & Mats see page 357 (Gauzes), 339 (Burners) and 360 (Mats) +44 (0) 3333 442 443 [email protected] timstar.com 399

LABWARE Tubing Delivery Tubes Rubber Tubing Delivery Tubes, Polypropylene Red Rubber Tubing Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use To BS 2775. Normal wall. *N8 Tubing - ideal substitutes for fragile glass alternatives. Suitable for many types fits most Bunsen Burners. of gas collection experiments. Nine types available. Supplied in a pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. AC TU16751 Size Length Bore £8.46 ea TU150002 £5.25 ea BG TU16756 N3 10 metre 3 mm £9.38 ea F TU150004 N5 5 metre 5 mm £8.73 ea TU16761 N5 10 metre 5 mm £11.23 ea TU150008 N6.5 5 metre 6.5 mm £12.38 ea TU16771 N6.5 10 metre 6.5 mm £23.69 ea TU16775 N10 5 metre 10 mm £3.50 ea TU150010 N10 10 metre 10 mm £14.94 ea TU16780 N12.5 1 metre 12.5 mm £7.46 ea TU150012 N12.5 5 metre 12.5 mm £26.81 ea TU16785 N16 1 metre 16 mm £8.26 ea TU150014 N16 5 metre 16 mm £33.69 ea N20 1 metre 20 mm N20 5 metre 20 mm Pressure Tubing E Red Rubber Pressure/Vacuum Tubing HD To BS2775. Heavy Wall. To withstand higher pressures, and prevent collapse under vacuum. Size Length Bore TU16900 H3 1 metre 3 mm £2.49 ea TU16905 H5 £5.60 ea TU16910 H6.5 1 metre 5 mm £7.95 ea TU16915 H8 Type TU16920 H10 1 metre 6.5 mm ✓ £13.06 ea TU58900 A 90° TU58902 B Bung Top £23.06 pk 1 metre 8 mm £17.44 ea TU58906 C Bung Top 2 £23.06 pk TU106550 D Straight tube £24.94 pk 1 metre 10 mm TU106554 E Small U bend £21.19 pk TU106558 F Medium U bend £24.94 pk Neoprene Tubing TU106552 G Large U bend £23.06 pk TU106556 H Side arm U bend £24.94 pk Neoprene Tubing £23.69 pk Delivery Tubes, Glass To BS 2775. Normal wall. *N8 Tubing fits most Bunsen Burners. Borosilicate glass, 6 mm o.d. Type Quantity TU16800 Size Length Bore £2.00 ea TU16801 £16.19 ea TU16805 N3 1 metre 3 mm TU16806 N3 10 metre 3 mm £3.61 ea TU16810 N5 1 metre 5 mm £28.06 ea TU16811 N5 10 metre 5 mm N6.5 1 metre 6.5 mm £3.69 ea N6.5 10 metre 6.5 mm £30.56 ea TU96560 90° bend 5 £7.49 pk Silicone Rubber Tubing TU16375 £9.23 set Set of different tubes 6 Burner Tubing Silicone Rubber Tubing Gas Burner Tubing To BS2775. Normal wall. Translucent. *N8 Tubing fits most Bunsen Burners Superior neoprene tubing, with flared end pieces to fit onto burner and gas tap nozzles. A single moulding that cannot be pulled apart easily. Size Length Bore TU16820 N3 1 metre 3 mm £2.63 ea TU16821 N3 £23.69 ea TU16825 N5 10 metre 3 mm £4.99 ea TU16826 N5 TU16830 N6.5 1 metre 5 mm £44.94 ea TU16831 N6.5 Length TU16835 N8* 10 metre 5 mm £5.94 ea TU16836 N8* TU180930 45 cm £4.94 ea 1 metre 6.5 mm £53.69 ea TU180932 60 cm £6.19 ea TU180934 90 cm £8.69 ea 10 metre 6.5 mm ✓ £7.25 ea 1 metre 8 mm ✓ £62.44 ea 10 metre 8 mm 400 More products and offers available on our website!

Tubing LABWARE PVC Tubing Capillary Tubing, Borosilicate Glass PVC Tubing Supplied in a pack of 5. To BS2775. Normal wall. Transparent and TU16731 Length Bore ✓ £18.06 pk non-toxic. Can be sterilised to 125°C. TU16736 £46.19 pk TU16741 1.5 metre 0.5 mm £18.69 pk 1.5 metre 1.0 mm 1.5 metre 1.5 mm TU16840 Length Bore £0.50 ea Tubing, Borosilicate Glass, Light Wall TU16841 £9.26 ea TU16845 1 metre 3 mm £0.94 ea Light wall (0.5 mm). Supplied in a pack of 30. TU16846 30 metre 3 mm £16.81 ea TU16850 1 metre 5 mm £1.06 ea TU16680 Length ✓ £28.06 pk TU16851 30 metre 5 mm £18.69 ea TU16681 £28.31 pk TU16855 1 metre 6.5 mm ✓ £1.50 ea TU16682 0.5 metre £37.44 pk TU16856 30 metre 6.5 mm £33.06 ea 0.5 metre TU16860 1 metre 8 mm £1.75 ea 0.5 metre TU16861 30 metre 8 mm £41.19 ea TU16865 1 metre 10 mm £2.00 ea Tubing, Borosilicate Glass, Medium Wall TU16866 30 metre 10 mm £16.81 ea TU16870 1 metre 12.5 mm £4.28 ea Medium wall (1.0 mm). TU16875 10 metre 12.5 mm £6.57 ea 1 metre 16 mm £8.46 ea Length Quantity 1 metre 20 mm ✓ £14.94 ea £26.19 ea 1.5 metre 10 Acrylic Tubing £39.94 ea TU16690 0.5 metre 20 £31.19 pk TU16691 1.5 metre 10 ✓ £26.81 pk Clear Acrylic Tubing TU16692 0.5 metre 20 TU16693 1.5 metre 10 £12.34 pk Lengths of clear XT acrylic tubing in various TU16694 0.5 metre 20 £25.89 pk diameters. TU16695 £14.94 pk £43.69 pk Tubing, Borosilicate Glass, Heavy Wall Heavy wall (1.5 mm). Supplied in a pack of 20. TU110100 Length TU170100 Length ✓ £33.69 pk TU110105 TU170101 £33.06 pk TU110110 1 metre TU170102 0.5 m £32.44 pk TU110115 1 metre 0.5 m 1 metre 0.5 m 1 metre Glass Tubing Visking (Dialysis) Tubing Tubing, Soda Glass Dialysis Visking Tubing Seamless viscose cellulose tubing. Should be stored in a resealable polythene bag to retain moisture. • MWCO: 12,000-14,000 daltons • Pore size: 24 ångström (2.4 nm) DI05760 Size Length DiameterWidth ✓ £6.25 ea DI05765 £2.25 ea TU16601 Length Quantity ✓ £26.19 pk DI05766 1 1 metre 6.3 mm 10 mm £49.94 ea TU16606 £15.56 pk DI05770 2 1 metre 14.3 mm 24-26 mm £2.25 ea TU16611 0.5 metre 30 £17.44 pk DI05771 2 30 metre 14.3 mm 24-26 mm £51.88 ea TU16616 0.5 metre 30 £26.19 pk DI05775 4 1 metre 17.5 mm 29-31 mm £2.38 ea TU16621 0.5 metre 30 £26.19 pk DI05776 4 30 metre 17.5 mm 29-31 mm £54.38 ea TU16631 0.5 metre 30 £26.19 pk DI05780 6 1 metre 21.5 mm 32-34 mm £2.38 ea TU120100 0.5 metre 30 DI05781 6 30 metre 21.5 mm 32-34 mm £54.38 ea TU16641 0.5 metre 30 £4.50 pk DI05785 7 1 metre 23.8 mm 39-41 mm £2.44 ea TU16661 0.75 metre 10 £26.19 pk DI05786 7 30 metre 23.8 mm 39-41 mm £55.31 ea TU16671 0.5 metre 30 £26.19 pk DI05790 10 1 metre 31.7 mm 50-54 mm £6.19 ea TU16676 0.5 metre 15 £21.19 pk DI05791 10 15 metre 31.7 mm 50-54 mm £72.44 ea 0.5 metre 6 £27.44 pk 13 1 metre 50.8 mm 77-82 mm 0.5 metre 6 £18.69 pk 13 15 metre 50.8 mm 77-82 mm £26.19 pk Capillary Tubing £29.94 pk Clips, Dialysis Tubing Gripping width 44 mm. Pack of 10. Capillary Tubing, Borosilicate Glass Supplied in a pack of 10. TU16720 Length Bore ✓ DI05795 £26.19 pk TU16721 TU16722 0.5 metre 0.4 mm 0.5 metre 0.8 mm 0.5 metre 1.2 mm +44 (0) 3333 442 443 [email protected] timstar.com 401

LABWARE Watch Glasses ● Weighing Watch Glasses, Soda-Lime Watch Glasses, Pyrex Glass with ground edges. Borosilicate glass. WA17550 Diameter £11.90 ea WA17555 ✓ £13.69 ea WA17560 50 mm 80 mm £15.56 ea 100 mm £2.24 ea Watch Glasses, PMP ✓ £2.82 ea £3.41 ea With flat base. WA17500 Diameter Quantity £3.03 pk WA17580 Diameter WA17505 £3.30 pk WA17585 WA17510 50 mm 10 ✓ £4.15 pk WA17590 60 mm WA17515 70 mm 10 £5.29 pk 80 mm WA17520 80 mm 10 £6.11 pk 100 mm WA17525 90 mm 10 £6.86 pk WA17530 100 mm 10 £7.48 pk 130 mm 5 150 mm 5 Weighing Weighing Boats Weighing Bottles Weighing Bottles, Glass Weighing Boats Polystyrene disposable. Can be shaped to form a pouring funnel. BA01380 Capacity Quantity £31.19 pk BA01385 Height Diameter £8.74 ea BA01375 ✓ £13.69 pk BA01390 ✓ £13.06 ea BA170300 5 mL 1000 BA01395 40 mm 20 mm 30 mL 500 £25.56 pk 50 mm 25 mm £13.69 ea 100 mL 250 60 mm 30 mm Weighing Funnels Weighing Bottles, Plastic Weighing Funnels, Pyrex Polypropylene. Glass. Capacity Length Height Diameter Mass 10 mL 100 mm 35 mm BA01405 £21.19 ea BA01412 60 mm 10 g ✓ £5.55 ea 402 More products and offers available on our website!

403 MICROSCOPES Economy Microscopes 405 Microscope Accessories 423 Motic Microscopes 406 Microslide System 427 Kern Microscopes 417 Travelling Microscopes 428 Eyepiece Cameras 423

MICROSCOPES ANNOTATED DIAGRAM OF EYEPIECE A ‘TYPICAL’ MICROSCOPE Typically x10 widefield magnification. EYEPIECE TUBE HEAD (TURRET) ARM NOSEPIECE STAGE STOP Revolves and holds objective lenses. If present, located at rear of stage. OBJECTIVE LENSES Typically x4, x10 and STAGE CLIP x40 but may have x100 for oil immersion. Holds slides in place. STAGE COARSE FOCUS ADJUSTMENT May be fixed or mechanical. FINE FOCUS ADJUSTMENT CONDENSER If present, to focus light on specimen. BASE DIAPHRAGM LIGHT INTENSITY CONTROL Controls amount of light to specimen. May also have filter fitted. MECHANICAL STAGE ILLUMINATION A mechanical stage may be fitted or supplied with the microscopes and retains the May be light source or mirror. prepared slide. Mechanical movement allows the slide to be manipulated in ‘x’ and ‘y’ directions. GLOSSARY N.A NUMERICAL APERTURE Applies to objectives and condensers. This is a function of resolution. BASE NOSE PIECE The base normally contains the illumination system Accepts the objectives. The nosepiece rotates the objectives that provide the view of CONDENSER the specimen. The nosepiece of the microscopes may hold 3 or more objectives. The condenser consists of a lens or set of lenses that focus the light onto the OBJECTIVE LENSES specimen. There are different types of condenser. The main objective lenses are 4x, 10x, 40x (spring loaded) retractable and 100x The stage condenser N.A 0.65 incorporated in the stage. (oil immersion) retractable. Objective lenses will be engraved with magnification, The Abbe condenser N.A 1.25 this is under the stage and is able to focus light. numerical aperture, tube length and cover slip acceptable thickness. DIAPHRAGM OBJECTIVE LENS TYPES There are different types of diaphragm used in microscopes. Achromatic objectives are standard objectives. Other are improvements, e.g. ASC The disc diaphragm is a revolving plate with a series of different sized holes fitted (Achromatic Superior Contrast) or plan Achromatic. The terms refer to optical beneath the stage. correction. The iris diaphragm is used with the Abbe condenser: a set of interlocked leaves that OIL IMMERSION OBJECTIVE can be adjusted to improve contrast. The 100x objective is lowered in to a drop of immersion oil placed on the slide. Oil DIN STANDARD immersion lenses should be used in conjunction with an Abbe condenser. The oil is This stands for Deutsche industrie Numer (an industry standard). the same refractive index as the objective lens and cover slip. EYEPIECE PARCENTERED A primary image is formed by the objective lenses: the eyepiece forms a secondary Applied to each objective viewing – the same centre point in turn. image, which is what you view. PARFOCAL Two types of eyepieces are commonly available. The ability of the microscope to stay in focus when the objectives are changed. Widefield – large field of view. Applies when high magnification to low magnification is selected. Huygenian – narrow field of view, graticules can be fitter to appropriate eyepieces. RMS The eyepieces fit onto the eyepiece tube or ocular tube. Royal Microscopical Society. FIELD OF VIEW RETRACTABLE OBJECTIVE The area which is seen through the eyepiece when the microscope is in focus. The high power objective lens is spring loaded and will retract protecting the FOCUSING prepared slide from damage. There are two types of focusing mechanisms. SLIP CLUTCH Rack and pinion – separate coarse and fine focusing controls. The slip clutch prevents the gears being damaged if you try to rack further than the Coaxial focusing – comprising both the coarse and fine focusing controls around a normal stop position. common axis. STAGE HEAD This is the flat, black table where the prepared slide is held in place by the stage Assembly that hold the eyepiece(s). this may be monocular, tutor, binocular or clips. An adjustable stage stop protects slides and microscope. trinocular. The head is capable of rotation through 360 degrees. STORE CLIPS ILLUMINATION The clips that hold the slide in place on the stage. Illumination can be provided in several ways. WORKING DISTANCE • Mirror – a plano-concave mirror situated on the base which collects light form a The distance between the top of a specimen and the bottom of the objective lens when the sample is in focus. lamp or neutral light and then adjusted to give the best illumination through the specimen. • Bulb – a mains or low voltage lamp either tungsten or halogen generally adjustable fro brightness to illuminate the specimen. • Fluorescent – fluorescent illumination gives an even white and cool light to the specimen. • LED – a cool even light source very close to natural light. No issues regarding heat on specimens. MAGNIFICATION Total magnification is the eyepiece magnification multiplied by the objective magnification. 404 More products and offers available on our website!

Economy Microscopes MICROSCOPES ECONOMY MICROSCOPES SUMMARY TABLE Warranty 1 year. Model Type Eyepiece(s)* Nosepiece Objectives§ Maximum magnification‡ Condenser Diaphragm Illumination† Focusing control** Power source Catalogue Code Price DualScope, Monocular x10 W Triple x4 x10 x40 x400 6 hole LED Coarse 3x AA batteries MI170900 £66.19 Compact Single x2 disc LED, Incident Coarse 2x AA batteries MI170902 £58.69 Stereoscope, Stereo x10 W x20 Compact DualScope Compact Microscope Stereoscope, Compact A robust, low-priced battery powered monocular microscope with A small, low-priced, battery-powered stereo microscope with LED simple optical glass objectives mounted on a revolving nosepiece. It illumination, simple design and fixed 20x magnification. The comes with a plastic stage with stage clips and a 6-hole disc condenser. microscope has sharp optics and 55-75 mm interpupillary adjustment. The eyepiece tube is mounted at a 45 degree angle for comfortable The small size and weight make this stereo microscope suitable for use viewing and has a wide-field eyepiece with built-in pointer. In addition in the field, for viewing insects, leaves, flowers, rocks, pond life etc. to the traditional bottom light, the microscope is provided with a top Complete with dust cover. light and is thus also suited for observation of surfaces of objects such as leaves, coins, circuit boards, insects etc. The simplicity of the design • Magnification: 20x makes it a good choice as an introduction to microscopes or as a • Objectives: 2x supplement to the more traditional school microscope. Supplied with a • Field of vision: 20 mm diameter dust cover. • Eyepieces: 10x, wide-field • Dimensions: 23 x 10 x 13.5 cm • Magnification: 40x, 100x, 400x • Illumination: LED (top light) • Objectives: 4x, 10x, 40x • Power supply: 2 x AA batteries (not included) • Eyepiece: 10x, wide-field • Weight: 585g • Condenser: 6-hole disc • Illumination: Bottom light LED; Top light LED • Power: 3 x AA batteries (not included) • Focus: Coarse adjustment MI170900 £66.19 ea MI170902 £58.69 ea SPARES & ACCESSORIES £2.21 pk SPARES & ACCESSORIES £2.21 pk BA01983 2 x AA Batteries BA01983 2 x AA Batteries timstar.com 405 +44 (0) 3333 442 443 [email protected]



Motic Microscopes MICROSCOPES MOTIC MICROSCOPES SUMMARY TABLE Model Type Eyepiece(s)* Nosepiece Objectives§ Maximum magnification‡ Condenser Diaphragm Illumination† Focusing control** Power supply Catalogue Code Price SFC-3A Monocular x10 W Triple x4, x10, x400 No Rotating Mirror Coarse n/a MI10434 £74.94 x40 disc £89.94 £168.75 SFC-3AF Monocular x10 W Triple x4, x10, x400 No Rotating Mirror Coarse n/a MI10436 £137.50 x40 disc & Fine £162.50 £187.50 BA50 Monocular x10 W Triple x4, x10, x400 Yes Rotating LED, variable Coarse 230 V charger + MI110200 £200.00 x40 disc & Fine rechg. batteries £468.75 £618.75 SFC- Monocular x10 W Triple x4, x10, x400 Yes Iris Tungsten Coarse 230 V AC MI10440 £143.69 100FL x40 & Fine £181.25 SFC- Monocular x10 W Triple x4, x10, x400 Yes Iris LED Coarse 230 V charger + MI55310 £525.00 100LED x40 & Fine rechg. batteries £668.75 £437.50 F11-10 Monocular x10 W Quadruple x4, x10, x400 Yes Iris LED, variable Coarse 230 V AC MI55320 x40 (x1000) & Fine F11-15 Monocular x10 W Quadruple x4, x10, x400 Abbe Iris LED, variable Coarse 230 V AC MI55325 x40 (x1000) & Fine B1-211E Monocular WF10x Quadruple x4 x10 x40 1000x 1.25 Iris LED, variable Coarse 230V AC MI180100 SP 18 mm x100 Abbe & Fine B1-220E Binocular WF10x Quadruple x4 x10 x40 1000x 1.25 Iris LED, variable Coarse 230V AC MI180200 SP 18 mm x100 Abbe None & Fine None ST-30C- Stereo x10 W n/a x2, x4 x40 No Halogen Coarse 230 V AC MI10552 2L00 Incident, No Tungsten Transmitted ST-30C- Stereo x10 W n/a x2, x4 x40 LED, Incident Coarse 230 V charger + MI94140 6LED & Transmitted rechg. batteries MOTIC DIGITAL MICROSCOPES DM-111 Monocular x10 W x4, x10, x1000 Abbe Iris LED, variable Coarse 230 V charger + MI65815 Quadruple x40, x100 & Fine rechg. batteries O.I. DM-1802 Monocular x10 W Quadruple x4, x10, x400 Abbe Iris Halogen, Coarse 230 V AC MI10590 x40 (x1000) variable & Fine BA50-X Monocular x10 W Triple x4, x10, x400 No Disc LED, variable Coarse 230 V charger + MI150100 x40 & Fine rechg. batteries * W = Widefield § O.I. = Oil Immersion ‡ (x1000) = with optional x100 O.I. objective †I = Incident (from above) T = Transmitted (from below) ** Coaxial = Coarse & fine focusing on one mechanism +44 (0) 3333 442 443 [email protected] timstar.com 407

MICROSCOPES Motic Microscopes Microscopes A range of well priced microscopes with a specification aimed for the education market. The new models are compatible with the new Moticam X camera which has added WiFi features, bringing technology to the classroom. Student Microscopes Student Microscope SFC-3 Series Student Microscope SFC-3 Series A 3/4 sized basic microscope combining ease of operation with mechanical strength. A 3/4 sized basic microscope combining ease of operation with mechanical strength. Specification: Specification: • Vertical monocular head • Vertical monocular head • x10 wide field eyepiece • x10 wide field eyepiece • x4, x10 and x40 (R) objectives • x4, x10 and x40 (R) objectives • Rack and pinion focusing • Rack and pinion focusing • Rotary disc diaphragm • Rotary disc diaphragm • 42 mm plano-concave mirror • 42 mm plano-concave mirror • 10 year warranty • 10 year warranty Quantity Quantity MI10434 1 £74.94 ea MI10436 1 £89.94 ea MI10434/10 10 £687.50 pk MI10436/10 10 £812.44 pk SPARES & ACCESSORIES £8.13 ea SPARES & ACCESSORIES £8.13 ea MI10439 £31.19 ea MI10439 £31.19 ea MI55300 42mm Plano-concave mirror and fork £12.44 ea MI55300 42mm Plano-concave mirror and fork £12.44 ea MI55305 Substage Illuminator LED £4.01 ea MI55305 Substage Illuminator LED £4.01 ea LED Bulb LED Bulb MI160570 Replacement dust cover MI160570 Replacement dust cover 408 More products and offers available on our website!

Motic Microscopes MICROSCOPES Student Advanced Microscopes BA50 Cordless Microscope Student Advanced Microscope SFC-100 The BA50 is a 3/4 size educational microscope with a reversed Series nosepiece & LED illumiation. Built-in batteries allow cordless operation. The rugged metal construction and precision mechanics should A robust metal-body microscope with high quality optics made out of guarantee many years of use. 100 % optically coated glass, which provide a crisp and clear image. Available with tungsten or LED illumination. The LED model runs Specification: cool, and features built-in rechargeable batteries and comes with a mains charger. The LED model is also available with a fitted eyepiece • 3/4 size student microscope graticule. • Monocular head, inclined 45° and 360° rotating Specification: • Widefield eyepiece WF10X/18 mm • Reversed triple revolving nosepiece • Monocular head inclined 45°, with 360° rotation • Achromatic objectives 4X, 10X, 40X S • x10 wide field eyepiece with pointer • Coarse and fine focusing system with tension adjustment • x4, x10, and x40 (R) DIN Objectives • 0.65 N.A. condenser with disc diaphragm • Coarse and fine rack and pinion focusing • LED illumination 20 mA, 3.5 V, 70 mW with intensity control • 0.65 NA condenser • PSU included • Iris diaphragm with filter housing • Dust cover • Dust cover • 5 year warranty • LIFETIME WARRANTY on optical components MI10440 Model Illumination Quantity MI110200 £168.75 ea MI10440/10 Tungsten 1 £137.50 ea SPARES & ACCESSORIES £46.19 ea MI55310 SFC-100FL Tungsten 10 £1,243.75 pk MI160050 x40 Objective £4.01 ea MI55310/10 SFC-100FL LED MI160570 Replacement dust cover MI180312 SFC-100LED LED 1 ✓ £162.50 ea MI180312/10 SFC-100LED LED 10 £1,493.75 pk SFC-100LED 1 £225.00 ea with eyepiece LED graticule 10 £2,118.75 pk SFC-100LED with eyepiece graticule SPARES & ACCESSORIES £32.44 ea MI10442 £48.69 ea MI10443 x15 WF Eyepiece £87.44 ea £36.81 ea 19 mm Eyepiece Graticule 10 x 0.1 mm £49.94 ea with holder MI10444 x100 O.I. Objective £9.38 ea MI10445 £12.05 ea MI10446 Mechanical Stage £12.44 ea £13.69 ea MI10447 Plastic case £4.01 ea MI10448 Tungsten bulb (240 V 20 W) MI55305 Halogen bulb (12 V 10 W) MI170000 LED Bulb Replacement power supply for Motic microscopes MI160570 Replacement dust cover +44 (0) 3333 442 443 [email protected] timstar.com 409

MICROSCOPES Motic Microscopes Teaching Microscopes Routine Teaching Microscope F11-15 Routine Teaching Microscope F11-10 Featuring a focusable ABBE condenser and the following specification Standard Microscope with the following specification and features. and features. Specification: Specifications: • Monocular head inclined 45°, with 360° rotation • Monocular head inclined 45°, with 360° rotation • x10 wide field eyepiece • x10 wide field eyepiece • x4, x10 & x40 DIN Achromatic objectives • x4, x10 & x40 DIN Achromatic objectives • Quadruple nosepiece • Quadruple nosepiece • Built in 0.65 condenser • Built in 1.25 focusable Abbe condenser • Coarse and fine focusing • Coarse and fine focusing • Iris diaphragm with filter holder and blue filter • Iris diaphragm with filter holder and blue filter • LED substage illumination • LED substage illumination • 5 year warranty • 5 year warranty MI55320 £187.50 ea MI55325 ✓ £200.00 ea SPARES & ACCESSORIES £32.44 ea SPARES & ACCESSORIES £32.44 ea MI10442 £48.69 ea MI10442 £48.69 ea MI10443 x15 WF Eyepiece £87.44 ea MI10443 x15 WF Eyepiece £87.44 ea £36.81 ea £36.81 ea 19 mm Eyepiece Graticule 10 x 0.1 mm £49.94 ea 19 mm Eyepiece Graticule 10 x 0.1 mm £49.94 ea with holder £12.44 ea with holder £12.44 ea MI10444 x100 O.I. Objective £13.69 ea MI10444 x100 O.I. Objective £13.69 ea MI10445 MI10445 MI10446 Mechanical Stage £4.01 ea MI10446 Mechanical Stage £4.01 ea MI55305 Plastic case MI55305 Plastic case LED Bulb LED Bulb MI170000 Replacement power supply for Motic MI170000 Replacement power supply for Motic microscopes microscopes MI160570 Replacement dust cover MI160570 Replacement dust cover 410 More products and offers available on our website!

Motic Microscopes MICROSCOPES Advanced Biological Microscopes Motic B1-220E SP Microscope Motic B1-211E SP Microscope • Binocular head 45° inclined 360° rotation • Monocular head 45° inclined 360° rotation • WF10x 18 mm lockable eyepiece • WF10x 18 mm lockable eyepiece • X4, x10, x40, x100 Semi-Planachromatic, DIN objectives • X4, x10, x40, x100 Semi-Planachromatic, DIN objectives • Built-in rackless mechanical stage • Built-in rackless mechanical stage • Coarse & fine focus • Coarse & fine focus • 1.25 NA Abbe condenser with iris diaphragm • 1.25 NA Abbe condenser with iris diaphragm • 3 W LED illumination • 3 W LED illumination • Immersion oil & dust cover included • Immersion oil & dust cover included • Dimensions: 245 x 190 x 380 mm • Dimensions: 245 x 190 x 380 mm • Weight: 6.8 kg • Weight: 6.8 kg • 5 year warranty • 5 year warranty MI180100 £468.75 ea MI180200 £618.75 ea +44 (0) 3333 442 443 [email protected] timstar.com 411

MICROSCOPES Motic Microscopes Stereo Microscope ST-30C-2LOO Stereo Microscope ST-30C-6LED An advanced stereo microscope with up to x40 magnification An advanced stereo microscope with up to x40 magnification complete complete with incident and transmitted illumination. With the following with incident and transmitted LED. Cordless, rechargeable, LED specification and features. illuminated microscope allowing for complete versatility With the following specification and features. Specification: Specification: • Binocular head inclined 45° • x10 wide field eyepieces (paired) • Binocular head inclined 45° • x2, x4 turret type objective • x10 wide field eyepieces (paired) • Incident and transmitted illumination 12V/10W • x2, x4 turret type objective • Rack and pinion focusing • Incident and transmitted rechargeable LED illumination • LIFETIME WARRANTY on optical components • Rack and pinion focusing • LIFETIME WARRANTY on optical components MI10552 ✓ £143.69 ea £49.94 ea SPARES & ACCESSORIES £12.05 ea MI94140 £181.25 ea MI180553 Incident Light Assembly £12.05 ea MI180554 Transmitted Light Assembly MI10448 Halogen bulb (12 V 10 W) 412 More products and offers available on our website!

Motic Microscopes MICROSCOPES Digital Microscopes Advanced Teaching Microscope DM-1802 Digital Microscope DM-111 •Specification: Specification: Monocular head inclined 30° with built-in 3.0 mega pixel CMOS Camera • Lockable x10 WF eyepiece with pointer • Built-in imaging camera • x10 wide field eyepiece • USB 2.0 output • Achromatic objectives x4, x10, x40 • 800 x 600 pixel live image • Quadruple revolving nosepiece • Quadruple revolving nosepiece with click stops • Coarse and fine focusing • DIN Achromatic objectives, x4, x10, x40, (x100 O.I. optional) • Built-in mechanical stage • Built-in mechanical stage • Focusable 1.25 N.A. Abbe condenser with iris diaphragm • Focusable 1.25 NA Abbe condenser • Built-in halogen illumination 12V/20W with intensity control • Separate coarse and fine focusing • Supplied with Motic Images Plus 2.0 Software (multi-language • Rechargeable LED illumination with intensity control • version) • Safety auto cut-off charger VDE 120-240 V • Calibration slide for accurate measuring function USB 2.0 PC connection • Motic Educator Software for PC & MAC • Operating system: Windows 98SE and higher, MAC OS9 & OSX MI65815 Type ✓ £525.00 ea MI10590 £668.75 ea DM111 with a x100 Oil Immersion Objective £92.44 ea timstar.com 413 £12.05 ea SPARES & ACCESSORIES £49.94 ea MI65835 £13.69 ea MI65840 Aluminium Box for DM-111 £4.01 ea LED 20 mA, 3.5 V, 70 mW Replacement Bulb MI65860 Objective lens x100 (oil immersion) MI170000 Replacement power supply for Motic microscopes MI160570 Replacement dust cover +44 (0) 3333 442 443 [email protected]

MICROSCOPES Motic Microscopes Digital Microscopes continued MOTIC Wi-Fi DIGITAL MICROSCOPES This range of digital microscopes are both affordable and up- to-date requirements for the needs of today’s young scientists. These microscopes require two power supplies: one for Adaptable to the new Moticam X camera which has added WiFi the illumination (supplied) and USB power for the cam‑ features, bringing technology to the classroom. era. You can use either a computer USB port, or a USB plug‑top power supply for this. BA50-X WiFi Digital Microscope The USB port on the Wi-Fi microscope is for power only – the image is not transmitted over USB. Timstar are pleased to introduce the new, versatile BA50-X WiFi digital microscope, which represents the latest in Educational technology. Android, Google Play and the Google Play logo are trademarks of Google Like the Moticam X, this digital microscope transmits live images to Inc. Apple and the Apple logo are trademarks of Apple Inc., registered in the wireless laptops, iOS or Android Tablets. Featuring high-speed, full U.S. and other countries. App Store is a service mark of Apple Inc. resolution imaging technology built into the head of the microscope, the BA50-X can be used as a normal microscope with the built-in eyepiece, or used to share live images with your class, using WiFi tablets or Windows Laptops. Please note: connection to the microscope camera is exclusively over WiFi, using the microscope’s own ad hoc network. The USB port is for power only. Specification: • Optical System: Finite optical system, 160€mm • Observation tube: Monocular with built in digital X type Wi-Fi camera • Inclination: 30° inclined, 360° rotating • Camera sensor: CMOS 1/3” - 1.3€MP - 1600x1200€pixels • Output: Wi-Fi transmission up to 1.3€MP • Eyepieces: WF10X/18€mm • Nosepiece: Reversed triple revolving nosepiece • Objective classification: Achromatic objectives, DIN • Objectives: 4X/0.10, 10X/0.25, 40X/0.65/S • Objective mounting thread: W 4/5”x1/36” (RMS standard) • Stage: Gliding stage with “one-touch” sample holder • Stage size: 105€mm (Diameter) • Upper limit stop: Upper limit stop pre-set but adjustable • Condenser: Built in 0.65 N.A. with disc diaphragm • Focus mechanism: Separate coarse and fine focusing system • Fine Focus precision: 2€µm minimum increment • Z-axis movement: 8€mm • Filter: Built-in frosted glass • Illumination: LED 20€mA, 3.5€V, 70€mW with intensity control • Transformer: External • Power supply: Charger 100-240€V or rechargeable batteries • Accessories included: Calibration slide, dust cover, immersion oil • (5€mL), charger and batteries Software: MotiConnect App for iOS and Android, Motic Images Plus 2.0 for PC • Weight: 2.75€kg • Dimensions (L x W x H): 175 x 153 x 334€mm MI150100 ✓ £437.50 ea SPARES & ACCESSORIES £46.19 ea MI160050 x40 Objective £10.88 ea EL160500 USB Plug-top Power Supply EL101392 Male A to Male B, 2m £3.85 ea MI160570 Replacement dust cover £4.01 ea MOTIC CAMERA SOFTWARE MOTIC PLAY & EDUCATOR SOFTWARE. Motic Play and Educator are imaging software tools designed for children using digital microscopes. The software uses pictures and sounds to help children capture and edit still images and videos. The software makes science fun for children and will allow them to capture and measure microscopic images and videos. They can add text and icons or apply effects such as “mosaic” or “emboss” to the images. Children can rotate the pictures, paint them, turn them to gray-scale and much more. The images they create can be shared by e-mail or exported for printing. The software allows children to imagine and create a variety of fun science-related images with step-by-step picture help sections that cover all of the functions. The Play version is designed for more Primary School level whereas Educator is for Key Stage 3 and beyond. The DS-2, DM-52 and DM-111 are all supplied as standard with this package. Motic Images Plus 3.0 – a fresh approach for powerful microscopy software. Motic Images Plus 3.0 is the first all-new redesign of this popular software, which includes all the major updates in digital microscopy. Unlock the potential of your microscope and capture, measure and quantify the image that you see through the eyepiece, onto a computer screen. The software comes with an interactive white balance and background balance in order to optimize the image background in terms of colour temperature or shading. Existing users with version 2.0 can upgrade to Images Plus 3.0 free of charge. User-friendly interface Multi-platform: Identical interface on Windows, Apple or Linux OS Intuitive & Customizable Multilingual software; simple to change between languages Live measurements Multilingual software; simple to change between languages Empowers your microscope to be a more efficient scientific tool Free upgrade from Images Plus 2.0 to 3.0 414 More products and offers available on our website!

Motic Microscopes MICROSCOPES Moticams The Moticam allows a normal microscope to be turned into a digital microscope with ease. A wide range of models are available to suit all budgets and requirements. The WiFi Moticam X allows multiple students to view images on their own devices, and the new Moticam 1080 can be connected directly to a projector or screen without a computer. The “All in One Box” concept behind the Moticam gives you everything you need to begin working, without additional accessories needed. Each Moticam is supplied with a CS ring adaptor, focusable lens, 30 mm and 38 mm eyepiece adaptors, USB cable, calibration slide, macro tube, and Motic Images Plus 3.0 software for Windows, Mac and Linux. AB C D E F G ...the downloadable MoticConnect app OUR EXPERT SAYS... makes photo-sharing easier than ever, allowing you to save and send microscope images, make notes on the image and view live images on multiple wireless devices. H Android, Google Play and the Google Play logo are trademarks of Google Inc. Apple and the Apple logo are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Model A B CD E F G H Moticam 1 Moticam 2 Moticam 3 Plus Moticam 5 Plus Moticam 10 Plus Moticam 1080 Moticam X Moticam X3 Resolution Connectivity 1.0 MP 2.0 MP 3.0 MP 5.0 MP 10 MP 8.0 MP still 1.3MP 4.0 MP USB 2.0 1080p video Wi-Fi USB 2.0 WiFi + Ethernet USB USB 3.0 USB 3.0 USB 3.0 HDMI + USB 2.0 USB USB + Power USB MI170105 USB USB USB 12 V external rechargeable £406.25 battery Catalogue MI130505 MI180520 MI180525 MI180530 MI180590 MI130515 ✓ MI190519 ✓ Code £175.00 Price £700.00 £868.75 £937.50 £918.75 £343.75 £487.44 +44 (0) 3333 442 443 [email protected] timstar.com 415

YOUNG SCIENTISTS EDITION PROFESSIONAL MEASURING ©stockkete/shutterstock.com Compound microscopes  |  Stereo microscopes  |  Laboratory balances OBS 106 OBE 114 EMB OBS 101 OSE 422 EWJ

Kern Microscopes MICROSCOPES KERN MICROSCOPES SUMMARY TABLE Warranty 2 years on mechanical & optical components. Model Type Eyepiece(s)* Nosepiece Objectives§ Maximum magnification‡ Condenser Diaphragm Illumination† Focusing control** Power supply Catalogue Code Price OBS-101 Monocular x10 W Triple x4, x10, x40 x400 0.65 Aperture LED, variable Coarse 230 V charger MI170500 £200.00 OBS-104 Binocular x10 W NA LED, variable & Fine + rechg. MI170502 OBS-106 Binocular x10 W LED, variable batteries MI170504 £312.50 OBE 101 Monocular x10 W Quadruple x4, x10, x40 x400 Abbe Aperture LED, variable Coarse MI160100 (x1000) & Finel 230 V charger £343.75 + rechg. £368.75 Quadruple x4, x10, x40 x400 Abbe Aperture Coarse batteries £431.25 (x1000) & Fine £456.25 230 V charger £512.50 Quadruple x4, x10, x40 x400 Abbe Aperture Coaxial + rechg. £562.50 (x1000) batteries £618.75 230 V AC OBE 111 Monocular x10 W Quadruple x4, x10, x40, x1000 Abbe Aperture LED, variable Coaxial 230 V AC MI160110 OBE 102 Binocular x10 W x100 O.I. LED, variable Coaxial 230 V AC MI160120 OBE 112 Binocular x10 W LED, variable Coaxial 230 V AC MI160130 Quadruple x4, x10, x40 x400 Abbe Aperture (x1000) Quadruple x4, x10, x40, x1000 Abbe Aperture x100 O.I. OBE 104 Trinocular x10 W Quadruple x4, x10, x40 x400 Abbe Aperture LED, variable Coaxial 230 V AC MI190140 (x1000) OBE 114 Trinocular x10 W Quadruple x4, x10, x40, x1000 Abbe Aperture LED, variable Coaxial 230 v AC MI190150 x100 O.I. OSE-414 Stereo x10 W n/a x2, x4 x40 No No LED, Incident Coarse 230 V AC MI160200 £168.75 OSE-417 Stereo x10 W n/a x2, x4 x40 No No LED, Incident Coarse 230 V AC MI160210 £243.75 No & Transmitted 230 V AC Field 230 V AC OSF-439 Stereo x10 W n/a x1, x2, x4 x40 No Field LED, Incident Coarse 230 V AC MI160400 £312.50 None & Transmitted 230 V AC OBL 127 Binocular x10 W Quadruple x4, x10, x40, x1000 Abbe LED, variable Coaxial MI160500 £868.75 x100 O.I. OBL 137 Trinocular x10 W Quadruple x4, x10, x40, x1000 Abbe LED, variable Coaxial MI160505 £968.75 x100 O.I. OZP 556 Stereo x10 W n/a x0.6 - x5.5 x55 No LED, Incident Coarse MI160700 £1,118.75 Zoom & Transmitted KERN DIGITAL MICROSCOPES OBD-127 Binocular, x10 W Quadruple x4, x10, x40, x1000 Abbe Field Halogen, Coaxial 230 V AC MI160800 £1,368.75 Digital x100 O.I. variable * W = Widefield § O.I. = Oil Immersion ‡ (x1000) = with optional x100 O.I. objective †I = Incident (from above) T = Transmitted (from below) ** Coaxial = Coarse & fine focusing on one mechanism +44 (0) 3333 442 443 [email protected] timstar.com 417

MICROSCOPES Kern Microscopes KERN & SOHN GmbH, established in 1844, have B utilised German design and workmanship to C manufacture a range of high quality microscopes for education, research and industrial use. Timstar is offering a selection of mid-range educational microscopes from KERN, along with selected higher level models. The full range from KERN is available from Timstar, on request. Student Microscopes OBS-1 Series Microscopes The KERN OBS-1 series is an education range of robust and simple to use compound microscopes, specifically designed for use in schools. Features: • Illumination: 0.5 W LED, variable, transmitted • Rechargeable batteries • Blue colour filter • Finite optical system (DIN) • Achromatic objectives • Eyepiece tube 45° inclined / 360° rotatable • Binocular Dioptre adjustment: one-sided • Overall dimensions: 130 x 300 x 310 mm (W × D × H) • Net weight: 3 kg approx. A MI170500 Model Illumination Quantity ✓ £200.00 ea MI170500/10 10 ✓ £1,800.00 pk MI170502 A OBS-101 LED, variable 10 MI170502/10 A OBS-101 LED, variable 10 £312.50 ea MI170504 B OBS-104 LED, variable ✓ £2,812.50 pk MI170504/10 B OBS-104 LED, variable C OBS-106 LED, variable £343.75 ea C OBS-106 LED, variable ✓ £3,093.75 pk 418 More products and offers available on our website!

Kern Microscopes MICROSCOPES Teaching Microscopes KERN OBE-1 Series Compound Microscopes The KERN OBE-1 series offers a high quality, robust range of compound C microscopes for use in schools, vocational training and laboratories. These are full-sized microscopes with metal frames and bases, along with a high specification, and are priced to be very competitive compared with other brands with similar specifications. •Features: Very easy to use, robust and stable educational microscope for all • common routine applications Dimmable, strong 3W LED light source to help produce • impressive images for its class Fitted with wide-field eyepieces, achromatic objectives, a nosepiece for up to four objectives, a large, fully-fledged stage • and an Abbe condenser, all as standard Available as a monocular, binocular or trinocular models with a • one sided dioptre adjustment (binocular/trinocular models only) Large selection of optional accessories including eyepieces, • objectives, simple polarisation unit and dark field unit Height adjustment is by means of coarse and fine focusses on • both sides Rechargeable models, equipped with a long-life battery, are also available on request B • Stable and precisely adjustable mechanism • Functional and ergonomic design • 3 year warranty Specifications: • Quadruple nosepiece • 360° rotatable / 30° inclined turret/eyepiece tube • WF 10x eyepiece, 18mm diameter • Achromatic objectives • 4x / 10x / 40x objectives + 100x on some models • 1.25 N.A. Abbe condenser • 3W LED dimmable transmitting illumination • Overall dimensions 324 x 191 x 348 mm (w x d x h) • Net weight approx. 5.5 kg A Model Type Illumination Quantity MI160100 OBE 101 Monocular with x4, x10 & x40 objectives LED, variable 10 ✓ £368.75 ea MI160100/10 LED, variable £3,318.75 pk MI160110 OBE 101 Monocular with x4, x10 & x40 objectives LED, variable 10 ✓ MI160120 LED, variable ✓ £431.25 ea MI160120/10 A OBE 111 Monocular with x4, x10, x40 & x100 objectives LED, variable ✓ £456.25 ea MI160130 LED, variable £4,106.25 pk MI190140 OBE 102 Binocular with x4, x10 & x40 objectives LED, variable £512.50 ea MI190150 LED, variable £562.50 ea OBE 102 Binocular with x4, x10 & x40 objectives £618.75 ea B OBE 112 Binocular with x4, x10, x40 & x100 objectives £42.44 ea £66.19 ea OBE 104 Trinocular with x4, x10 & x40 objectives £162.50 ea C OBE 114 Trinocular with x4, x10, x40 & x100 objectives SPARES & ACCESSORIES MI160105 MI160115 Eyepiece WFx10/Ø18mm with pointer MI160125 Eyepiece WFx10/Ø18mm with scale x100 objective for use with water +44 (0) 3333 442 443 [email protected] timstar.com 419

MICROSCOPES Kern Microscopes Advanced Microscopes KERN OSE-4 Series Stereo Microscopes KERN Advanced Microscopes - OBL-1 Series An education line of compact, robust stereo microscopes ideal for schools, training establishment or workshops. A more sophisticated range for use in the laboratory and vocational training, these robust microscopes have stable and precisely adjustable Features: mechanisms and produce impressive images in both bright and dark field applications. • Very robust, stable and easy to use stereo microscope • Optimally suited to educational establishments •Features: • Excellent optical characteristics for its class, giving clear images Excellent and robust laboratory microscopes for all common over a broad field of view • routine applications Fix pre-centred Koehler illumination; adjustable field diaphragm; • LED illumination ensures reliable, good illumination at all times height adjustable Abbe condenser with adjustable aperture • Eyepieces are fixed in the tube, to protect against loss or damage • Stable and precisely adjustable mechanism • diaphragm • Functional and ergonomic design Specifications: Wide field eyepieces; with achromatic infinity corrected E-plan • Optical system: Greenough objectives • Tube: Binocular, 45° inclined • Interpupillary distance: 55 – 75 mm • Complete with dioptre adjustment on one tube • Dioptre adjustment: Yes, one-sided • Available as binocular and trinocular versions • Eyepieces: WF 10x Ø 20 mm • Nosepiece with four objectives • Field of view: Ø 10/5mm • Large stage • Objectives: 2x / 4x • 3W dimmable LED illumination • Total magnification: 20x / 40x • A variety of optional accessories Specifications: • Illumination: LED incident (OSE-414) or LED incident + LED • Tube: Binocular (OBL 127), Siedentopf, 30° inclined, 360° • rotatable transmitted (OSE-417) Tube: Trinocular (OBL 137), Siedentopf, 30° inclined, 360° • Stage plate: Black/white (OSE-414; Frosted glass (OSE-417) rotatable • Packing dimensions: 295 x 162 x 345 mm (w x d x h) • Net weight (approx.): 2.25 kg • Eyepieces: WF 10x / Ø 20 mm • Nosepiece: Quadruple • Objective type: Infinity E-Plan • Objectives: 4x/10x/40x/100x • Illumination: Dimmable 3W LED (transmitted) • Interpupillary distance: 50 – 75 mm • Dioptre adjustment: Yes, one-sided • Condenser: Abbe N.A. 1,25 pre-centred (aperture diaphragm) • Overall dimensions (W x D x H): 395 x 200 x 380 mm • Net weight approx.: 6.5 kg MI160200 Model Illumination £168.75 ea MI160210 ✓ £243.75 ea OSE-414 LED, Incident OSE-417 LED, Incident & Transmitted MI160500 Model Type ✓ £868.75 ea MI160505 £968.75 ea OBL 127 Binocular £425.00 ea OBL 137 Trinocular £218.75 ea £400.00 ea SPARES & ACCESSORIES £243.75 ea MI160550 100x objective for use with water £156.25 ea MI160552 Darkfield Condenser MI160554 Phase contrast unit, 40x More products and offers available on our website! MI160556 Polarising Unit MI160558 0,47x C-mount adapter for camera attachment 420

Kern Microscopes MICROSCOPES Stereo Microscopes continued KERN OZP-556 Stereo Zoom Microscope KERN OSF-439 Stereo Microscope A high-quality model for flexible and professional use, the KERN OZP- 556 is a very robust and easy to use stereo microscope with a zoom An education line of compact, robust stereo microscope ideal for function which is operable from both sides and gives an above-average schools, training establishment or workshops. enlargement range. Ideally suited to biological laboratories and research establishments as well as quality control, assembly and repair Specifications: Greenough workstations in the electronics and semi-conductor industries. Optical system: Brightness: Adjustable Tube: Binocular, 45° inclined Interpupillary distance: 55 – 75 mm Specifications: Optical system: Greenough Dioptre adjustment: Yes, one-sided Tube: Binocular, 35° inclined Eyepieces: WF 10x Ø 20 mm Field of view: Ø 20/10/5mm Magnification ratio: 9.2:1 Interpupillary distance: 52 - 76 mm Objectives: 1x / 2x / 4x Dioptre adjustment: Yes, both sides Total magnification: 10x / 20x / 40x Illumination: Dimmable LED incident + LED transmitted Eyepieces: HSWF 10x Ø 23 mm Field of view: 38.3 - 4.2 Stage plate: Black/white; Frosted glass Objective zoom: 0.6x - 5.5x Packing dimensions: 290x225x340 mm (w x d x h) Net weight (approx.): 2.25 kg Total magnification: 6x - 55x Illumination: Dimmable 3W LED (incident); 3W LED (transmitting) Brightness: Adjustable Packing dimensions (W x D x H): 370 x 330 x 385 mm Net weight (approx.): 6.1 kg MI160400 £312.50 ea MI160400/10 ✓ £2,812.50 pk +44 (0) 3333 442 443 MI160700 £1,118.75 ea [email protected] timstar.com 421

MICROSCOPES Kern Microscopes Digital Microscopes KERN ODC-895 Digital USB Microscope KERN Advanced Microscopes - OBD-127 The USB hand-held microscope is designed for rapid and simple Digital Microscope observations. Ideally suited for coins, plants, insects and skin samples for all hobby scientists, children and students. The eight LEDs fitted in An advanced level digital microscope for use in the laboratory and for the ring shape ensure strong and effective illumination of your sample. vocational training, this robust microscope has stable and precisely Use the adjustment wheel on the cable to control the illumination adjustable mechanisms and produces impressive images in both setting. Includes KERN Microscope VIS software bright and dark field applications. A range of optional accessories are available, including: polarisation kit; phase contrast unit; dark field unit. Features: • Excellent, robust laboratory microscope with integral 3 MP camera • Fix pre-centred Koehler illumination; adjustable field diaphragm; height adjustable Abbe condenser with adjustable aperture diaphragm • Produces impressive images. • Wide field eyepieces; with achromatic infinity corrected E-plan objectives • Complete with dioptre adjustment on one side • Nosepiece with four objectives • Large stage • English-language software is included. S•••••••••••••••peCICISONCODETUSOlnucyleeaooiSoubpbtiboennefBmnlsmjejipoepsseercedrpoo:iutteacciape yrenurrttrrtepticiinai/aeipvvosteneMsyateeciinsriez:glpeodsel:o esrta e::njsy::sn : ur: op y:oy s sletcutdm:eht iimsreootnna:m t:n: e ce: : Binocular, 30° inclined, 360° rotatable Model ✓ £237.44 ea WF 10x / Ø 20 mm MI190200 ODC-895 3MP 2.0 Handheld Microscopes CMOS ••• 0.5” KERN ODC-910 Handheld WiFi Microscope Field diaphragm: Colour Filter: Windows 2000, Vista, XP, 7, 8 & 10 The digital WLAN hand-held microscope is designed for rapid and Overall dimensions Quadruple simple surface observations. Ideally suited for coins, bank notes, • (W x D x H): Infinity E-Plan stamps, circuit boards, plants, insects, gems and skin samples for Net weight approx.: 4x/10x/40x/100x (oil immersion) industrial use, for all hobby scientists, children and students. It has 6V/20W Halogen (transmitted) been specially developed for direct connection to your WLAN-enabled 50 – 75 mm smartphone or tablet with iOS or Android. During the live transfer Yes, one-sided to your smartphone or tablet you can take photos and videos of the Abbe N.A. 1,25 pre-centred (aperture sample you are investigating, and these can also be stored on your diaphragm) device. For larger videos you can also insert a mini SD card directly into Yes the microscope. The six LEDs fitted in the ring shape ensure strong and Blue (built-in) effective illumination of your sample. Use the adjustment wheel on the 394 x 185 x 419 mm microscope to control the illumination setting. Features an integrated 7 kg rechargeable battery pack, a flexible column which is easy to adjust and which has a swan neck so that you can achieve the ideal height setting, as well as a mains adapter. MI160800 Model £1,368.75 ea OBD-127 £425.00 ea £218.75 ea SPARES & ACCESSORIES £400.00 ea Model ✓ £187.44 ea MI160550 100x objective for use with water £243.75 ea MI190300 ODC-910 MI160552 Darkfield Condenser MI160554 Phase contrast unit, 40x MI160556 Polarising Unit 422 More products and offers available on our website!

Eyepiece Cameras ● Microscope Accessories MICROSCOPES KERN ODC-87/ODC-88 Series Eyepiece Microscope Eyepiece Camera Cameras Basic microscope eyepiece camera with 2 MP resolution, which connects Convert your microscope to digital by swapping an eyepiece with this to a PC via the inbuilt USB 2.0 cable. Works with both monocular and digital camera, and connect to your computer via USB. Includes KERN binocular microscopes by replacing the eyepiece. Fits eyepiece tubes Microscope VIS software, USB cable, eyepiece adaptors & an object with a diameter of 23 mm or 30 mm (adapter included). Comes with micrometer to calibrate the software. software for Windows PCs. Software download: timstar.co/MI170800- driver •• 2 MP still resolution 640 x 480 live resolution MI190000 Model Resolution ✓ £187.44 ea MI170800 £104.94 ea MI190010 ✓ £224.94 ea MI190020 ODC 872 1.3 MP ✓ £299.94 ea ODC 874 3.0 MP ODC 881 5.0 MP Microscope Accessories Graticules Stage Graticules Plastic Eyepiece Graticules The micrometer scale is disc mounted on a black metal slide. Suitable for These measuring graticules are printed onto plastic film. They have a all microscopes. Dimensions: 76 x 0-10mm scale subdivided into 0.1mm 25 mm. divisions, each of the millimetre subdivisions are numbered 0-10. Suitable for most school microscopes. MI84165 Quantity £49.94 pk MI10710 Graduation ✓ £149.38 ea Supplied in 2 strips of 5 graticules MI10715 £149.38 ea 10 x 0.1 mm 1 x 0.01 mm Glass Eyepiece Graticule Stage Micrometer Mounted on glass discs 19mm diameter to fit The micrometer scale is disc mounted on a black glass slide. Suitable most eyepieces. for all microscopes. Slide comes with 2 scales: 10 mm x 0.1 mm and 1 mm x 0.01 mm. Dimensions: 75 x 25 mm. MI10700 Graduation £82.44 ea MI130520 ✓ £87.44 ea 10 x 0.1 mm Stage Micrometer, Complete Eyepiece with Graticule Economy Complete eyepieces contain a measuring graticule. Suitable for all An economical but good quality glass Motic Microscopes. (Not shown). Diameter: 18 mm. stage micrometer slide, with a 1.0 mm long x 0.01 mm scale marked on the glass. MI74145 £74.94 ea MI170400 Quantity ✓ £14.94 ea MI170400/10 10 £131.19 pk +44 (0) 3333 442 443 [email protected] timstar.com 423

MICROSCOPES Microscope Accessories Blood Testing Haemacytometer, Glass Blood Lancets These Bright-Line (Rhodium coated) glass Haemacytometers are designed for accurate counting of cells in blood or other fluids, with For capillary blood collection. one-piece glass construction, an H-shaped moat to form two counting Chromium steel. Packaged areas (plateaus) and a “V” slash at the loading side of each plateau. individually. Sterile. Each plateau features enhanced Neubauer rulings, the ruled surface being 0.1 mm below the cover glass, limiting the volume of blood or MI10855 Quantity £10.91 pk fluid over a square mm to 0.1cu.mm and over each of 400 squares 200 (within the central square mm) to 0.00025 cu. mm. Contact of the flat, polished cover glass surfaces with cover glass supports produces an Medical Swabs, Sterile exact volume of fluid over the counting area. The difference in surface tension characteristics between the metallic surface on the chamber and For cleaning the skin. the polished cover glass assures smooth capillarity for precise loading and more even cell distribution. Supplied as a double chamber with MI10860 Quantity £3.74 pk two cover glasses or a kit which includes a double counting chamber, 100 cover glasses and red and white pipettes, all in a protective case. Spare/replacement glass cover glasses are also available, as a pack of 2. • Bright Line (Rhodium coated) counting chamber • Improved Neubauer ruling pattern • Cell Depth: 0.100 mm ±2 % • Volume: 0.1 µL To clean the counting chamber after use: remove the cover glass and clean with water or a mild cleaning solution (e.g. 10% bleach solution). Dry the counting chamber with a soft cloth/wipe, or rinse with acetone. Haemacytometers MI160320 Type ✓ £121.19 ea MI160322 £96.19 ea Haemacytometer, Disposable Double cell chamber set £18.13 pr Double cell counting chamber with cover The C-chip™ is an easy-to-use, precision disposable plastic glasses haemocytometer, developed to solve the problem of conventional glass haemocytometers. Supplied individually packed, in a box of 50 SPARES & ACCESSORIES slides, these Neubauer Improved type haemocytometers have 0.1 mm MI160324 Spare cover glasses, pair 0.05 mm grids, for counting blood cells (erythrocytes, leukocytes), mammalian cells etc. Supplied as a box of 50 double chamber slides Microscope Slide Staining (100 tests). Features and benefits: Hand Microtome • No need to coverslip For section cutting. The milled • No need to wash for reuse head at the base when revolved • No more contact to hazardous materials records 10 microns per click. • Accurate, reliable and repeatable Brass top plate 75 mm diameter. • Bright grid pattern Overall length 85 mm. Supplied • 2 tests per slide in a hinged wooden case. • Pack of 50 double chamber slides (= 100 tests) • Quartz grade optical plastic • Sturdy and strong Main applications: • Blood analysis • Cell culture; cell concentration measurement and cell viability • counts Microbiology; bacterial and fungal spores Dimensions: 25 x 75 x 1.6 mm (w x l x t) Chamber depth: 100 µm Chamber volume : 10 µL MI11125 £61.19 ea Staining Block (Cavity) Clear polished glass, 6 mm deep cavity with flat glass cover. Quantity £118.75 pk MI11145 Dimensions £5.06 ea MI160300 50 40 x 40 mm 424 More products and offers available on our website!

Microscope Accessories MICROSCOPES Microscope Slide Staining continued Microscope Slides Staining Trough Microscope Slides, Value Glass with lid. To hold 20 slides. Washed with 45° ground edges. External cellophane wrapping, interleaved. Dimensions: MI11165 Dimensions £21.19 ea 76 x 26 mm. 76 x 26 mm Coplin Staining Jar Glass with lid. To hold 20 slides. MI10901 Thickness Quantity £2.49 pk 1.0 to 1.2 mm 50 MI11155 Dimensions £14.94 ea Microscope Slides 76 x 26 mm Washed with 45° ground edges. Internal cellophane Microscope Slide Cover Slips wrapping with easy-open tear strip. Dimensions: 76 x 26 mm. MI10906 Thickness Quantity ✓ £3.30 pk MI10907 £2.95 pk MI10908 0.8 to 1.0 mm 50 £3.74 pk 1.0 to 1.2 mm 50 £19.94 pk 1.2 to 1.5 mm 50 Cover Slips No.0 Microscope Cavity Slides Resistance Glass 0.09 to 0.13 mm thick. Microscope slides with round, polished 15mm diameter cavity. MI10925 Dimensions Quantity £8.56 pk MI10930 ✓ £1.86 pk Dimensions Quantity MI10935 19 mm diameter 100 18 x 18 mm 100 £2.49 pk 22 x 22 mm 100 £8.74 pk ✓ £1.45 pk £2.17 pk MI120100 76 x 26 x 1.2 mm (L x W x D) 50 Cover Slips No.1 Microscope Slides, Frosted Panel Resistance Glass 0.13 to 0.16 mm thick. Glass microscope slides with a single frosted panel to allow marking of the MI10940 Dimensions Quantity slide. These come with tissue paper MI10945 separating each slide and have ground MI10950 19 mm diameter 100 edges. 1.0 mm thickness. 18 x 18 mm 100 22 x 22 mm 100 Cover Slips No.1½ Resistance Glass 0.16 to 0.19mm thick. MI11025 Dimensions Quantity ✓ £1.58 pk Dimensions Quantity £3.45 pk MI11030 £2.17 pk MI104176 76 x 26 mm 50 MI11035 18 x 18 mm 100 £2.71 pk MI11040 20 x 20 mm 100 £2.88 pk MI11050 22 x 22 mm 100 £3.28 pk 22 x 26 mm 100 22 x 40 mm 100 ✓ £1.94 pk £4.94 pk Cover Slips No.2 Microscope Slide Folders Resistance Glass 0.19 to 0.25mm. Microscope Slide Folder Dimensions Quantity Two hinged flaps and numbered positions. MI11066 18 x 18 mm 100 MI11071 22 x 22 mm 100 Cover Glass Forceps Stainless Steel with Spatula ends. MI11075 £1.56 ea MI11100 Type Dimensions £9.51 ea To hold 20 slides 76 x 26 mm +44 (0) 3333 442 443 [email protected] timstar.com 425

MICROSCOPES Microscope Accessories ● Microslide System Microscope Slide Boxes Microscope Slide Box, Plastic Microscope Slide Box Made from tough plastic. Numbered slots for 25, 50 or 100 slides. Leatherette covered wood, with AB hinged lid, wooden racks and numbered name sheet. MI11110 Type £56.19 ea To hold 100 slides C Immersion Oil (Microil) OI4384 Chemical Quantity £6.70 MI104170 Type £4.36 ea 25 mL MI11115 £5.80 ea MI104172 A To hold 25 slides £14.94 ea B To hold 50 slides C To hold 100 slides Microslide System Top quality specimens are photographed under optimum conditions, magnified, labelled and turned into strips of colour transparencies in sets of related pictures. The notes are clearly and precisely written with all the important words highlighted. The viewers are tough, child-proof magnifiers. They can also be used as simple low-power microscopes for examining soil samples, pollen, parts of flowers, small insects, etc. • Superb Quality photographs • Every student looks at the same image • No searching or focusing problems • No breakages • Students can work at their own rate Bioviewers Microslide Viewer (Bioviewer) BioViewers are tough styrene instruments, almost unbreakable and made for years of wear in classroom conditions. They do not need any special treatment or care, they can even be washed. No lamp is needed; the white reflector stage provides sufficient light for a bright image. They can be used in any room at any time or even outdoors. With BioViewers you can stop worrying about expensive apparatus in inexperienced hands. ...low maintenance OUR EXPERT SAYS... product that will never let you down. Much under-rated, the Bioviewer is robust and can be used in the field or classroom environment. MS88800 £22.44 ea 426 More products and offers available on our website!

Microslide System MICROSCOPES Biosets Microslides Microslides are sets of 8 related 35mm images, as photographed through a microscope, and designed to be viewed through a Microslide Viewer (Bioviewer – MS88800). Arrows and callouts help the students locate important features being studied, accompanied by a detailed text folder designed to stimulate, inform and question the students about the topic. Each text folder has a handy pocket to store the Microslides. Supplied in packs of 10. MS80142 Type £124.94 pk MS80044 Type £143.75 pk MS80016 £124.94 pk MS160045 £137.50 pk MS80024 Leaf of the Flowering Plant £124.94 pk MS160065 Drug Abuse Under Microscope £122.44 pk MS80036 Human Blood £118.69 pk MS88874 Immunity £118.69 pk MS80046 Digestive System £124.94 pk MS160080 Human Diseases £118.69 pk MS80048 Human Meiosis £118.69 pk MS160085 Five Kingdoms of Life £118.69 pk MS80110 Chromosomes and Genes in Action £124.94 pk MS80132 Animal Tissue Set 1 - Epithelium & £122.44 pk MS80120 Parasites and other causes of disease £137.50 pk MS80146 Cartilage £137.50 pk MS80170 Cell Structure £118.69 pk MS160090 Animal Tissue Set 2 - Muscle, Bone, £118.69 pk MS80200 The Virus £124.94 pk MS80028 Connective £124.94 pk MS160015 Ultra-Structure of Animal Cells £124.94 pk Plant Mitosis MS160025 Green Plants £124.94 pk Photosynthesis Helpful Bacteria The Reflex Arc Body Defences Against Infection The Respiratory System +44 (0) 3333 442 443 [email protected] timstar.com 427

MICROSCOPES Travelling Microscopes Intermediate Vernier Microscope The unit is built on a heavy cast-iron base. The movement is controlled by a knob at the side of the base, and can be fixed in any position with a clamping screw, and a Vernier scale allows precise measurement to 0.01 mm. The carriage has two locations for the microscope, which allows it to be mounted with its axis in any position relative to travel. The microscope itself features a 7x magnification Ramsden objective, 3x magnification 50 mm FL eyepiece, and a cross-piece graticule, with rack-and-pinion focusing. Supplied in a polished wooden case. MI180000 £343.75 ea Advanced Vernier Microscope The unit is built on a heavy cast-iron base with three levelling screws, with a bubble level meter. The horizontal movement is controlled by a knob at the left hand side of the base, and can be fixed in any position with a clamping screw, and a Vernier scale allows precise measurement to 0.02 mm. The total horizontal movement is 210 mm. Vertical movement is by a rack-and-pinion, and has its own Vernier scale to 0.02 mm. The total vertical movement is 160 mm. The stage for placing objects for measurement is fitted with a Perspex plate. The microscope can be clamped in either a vertical or horizontal position, and features a 10x magnification 50 mm F.L. achromatic eyepiece. Supplied in a polished wooden case. MI180050 £437.50 ea 428 More products and offers available on our website!

429 PHYSICS Astronomy430 Forces & Motion 475 Molecules in Motion 491 Atoms & Nuclei 432 Optics 498 Physical Quantities 520 Electrostatics441 Vibrations & Waves  523 Oscilloscopes 535 Electromagnetism448 Magnetism452 Magnets456 Energy 460

PHYSICS Astronomy Planetary Motion Solar System Poster Set Orbit Tellurium 2 A complete set of laminated posters, showing the Sun and nine planets. Each print shows a planet at its correct relative size and characteristics. A model showing the Sun, Earth and Moon, correctly geared to show When hung on a wall the set will give an impression of the overall each month as the Earth orbits the Sun. The Sun is represented by a relative size of the solar system. bright lamp. It is particularly useful in demonstrating: Sun’s apparent motion: changing length and direction of shadows during a day and during a season; night and day; changing length of days; seasons; phases of the Moon; eclipses of the Moon and Sun. Dimensions (L x H) 650 x 250mm. Content includes: • Tellurium model • Stick-on model person • Model sundial • Earth axis extension • Two Earths and Moons • Date indicator • Phase of the Moon indicator • Eclipse shadow card, teaching guide • Electrical Operation: 6V transformer supplied EA18235 Quantity £35.56 set 10 The Sun AstroSolar® Solar Viewer Silver/Gold These viewers offer a safe, easy and comfortable way to make solar observations, allowing viewing of partial phases of solar eclipses, and even large sun spots, with your own eyes. Comprises AstroSolar® silver/ gold film, with eye-sided reflex-free viewing, which blocks both UV for safety, and IR for comfort. • 100 % UV block • 100 % IR block • 99.999 % reduction sun light intensity • Optical Density 0.5 • Conforms to EN ISO 12312-2:2015 • Instructions included • Made in Germany EA18225 £312.50 ea Solar System Orbit Orrery This hands-on model with teaching guide helps pupils understand the solar system including its shape, the sun as the source of its light, planetary orbits, the planets’ names and which planets may be seen on given days. Requires 2xAA batteries to light the sun. Dimensions (H): Height 100mm. Diameter of largest Orbit 380mm. EA18220 £29.94 ea SU180100 £5.07 ea SPARES & ACCESSORIES £2.21 pk BA01983 2 x AA Batteries More products and offers available on our website! 430

Astronomy PHYSICS Telescopes Refractor Telescope, Reflector Telescope, Refractor Telescope, Mercury-607 Explorer-150P Capricorn-70 (EQ1) • 60mm (2.4”) f/700 Achromatic Refractor • 150mm (6”) f/750 Parabolic Newtonian • 70mm (2.75”) f/900 Achromatic Refractor • Magnifications (with optics supplied): x35, • Magnifications (with eyepieces supplied): Reflector x70, x140 x36, x72, x90, x180 • Magnifications (with eyepieces supplied): • Objective Lens Diameter: 60mm x30, x60, x75, x150 • Highest Practical Power (Potential): x140 • Telescope Focal Length: 700mm (f/11.66) • Objective Lens Diameter: 70mm • Eyepieces Supplied (1.25”): 10mm & 20mm • Highest Practical Power (Potential): x300 • Telescope Focal Length: 900mm (f/12.8) • x1.5 Erecting Eyepiece • Diameter of Primary Mirror: 150mm • Eyepieces Supplied (1.25”): 10mm & 25mm • x2 Barlow Lens 1.25” • Telescope Focal Length: 750mm (f/5) • x2 Barlow Lens • 5x24 Finderscope • Eyepieces Supplied (1.25”): 10mm & 25mm • Red Dot Finder • 1.25”/31.7mm Star Diagonal • x2 Deluxe Barlow Lens 1.25” (with Camera • 1.25”/31.7mm Star Diagonal • Fully Coated Optics • Multi-Coated Objective Lens • Alt-Azimuth Mount Adapter) • EQ1 Equatorial Mount • Aluminium Tripod with Accessory Tray • Aluminium Tripod with Accessory Tray • Tube material: Aluminium • Parabolic Primary Mirror • Tube material: Aluminium • 0.5mm Ultra-Thin Secondary Mirror Supports • 36% more Light Gathering than 60mm • 6x30 Finderscope • Direct SLR Camera Connection • EQ3-2 Deluxe Equatorial Mount • Built-in Polar Alignment Scope Holder • Aluminium Tripod with Accessory Tray • 33% more Light Gathering than 130mm • Tube material: Aluminium TE96314 ✓ £162.50 ea TE96334 ✓ £87.44 ea TE96330 ✓ £450.00 ea ASTRONOMICAL DATA 1 Astronomical Unit (AU) = the mean distance from the Sun to Earth 1 Light Year (ly) = 9.4605 x 1012 km = 5.8785 x1012 miles = 63240 AU = 31 557 600 light seconds 1 Light second = 299 792 km = 299.79 x 106 (299 792 458) metres = 186 261 miles = 0.002004 AU OUR SOLAR SYSTEM PLANETS – in order of distance from the Sun Age: 4.57 billion years (4.57 x 109 years) Mercury - Diameter: 4 879 km = 3 032 miles. Galaxy: Milky Way Distance from Sun: 57.909 x 106 km. Gravity (g): 3.76ms-2 Venus - Diameter: 12 104 km = 7 521 miles. SUN Distance from Sun: 108.208 x 106 km. Gravity (g): 8.77ms-2 Distance from Earth (mean): 149 597 870 km = 1.4959787 x Earth – Diameter: 12 756 km = 7 297 miles. 1011 metres = 92 960 116 miles = 1AU Distance from Sun: 149.598 x 106 km. Gravity (g): 9.81ms-2 Mass: 1.989 x 1030 kg Mars – Diameter: 6 792 km = 4 220 miles. Diameter: 1 392 530 km = 8.653 x 105 (865 318) miles Distance from Sun: 227.937 x 106 km. Gravity (g): 3.8ms-2 Temperature at surface: 5770K = 5497˚C Jupiter – Diameter: 142 984 km = 88 850 miles. Temperature at centre: 15 600 000K = 15 599 727˚C Distance from Sun: 778.341 x 106 km. Gravity (g): 24.9ms-2 Gravity at surface (g): 274ms-2 – i.e. approx. 28 times that at the Saturn – Diameter: 120 536 km = 74 901 miles. surface of the Earth Distance from Sun: 142.6730 x 107 km. Gravity (g): 10.4ms-2 Uranus – Diameter: 51 118 km = 31 765 miles. EARTH Distance from Sun: 287.0658 x 107 km. Gravity (g): 10.4ms-2 Diameter: 12 756 km = 7297 miles Neptune – Diameter: 49 528 km = 30 777 miles. Mass: 5.974 x 1024 kg Distance from Sun: 449.8396 x 107 km. Gravity (g): 13.8ms-2 Distance from Sun (mean): 149.598 x 106 km = 92 960 116 miles Pluto* - Diameter: 2 390 km = 1 485 miles. = 1AU Distance from Sun: 590.64 x 107 km. Gravity (g): 4.0ms-2 Gravity at surface (g): 9.81ms-2 * Now reclassified as a dwarf planet MOON Diameter: 3475 km = 2159 miles Mass: 7.348 x 1022 kg Distance from Earth (mean): 384 400km = 238 866 miles Gravity at surface (g): 1.62 ms-2 +44 (0) 3333 442 443 [email protected] timstar.com 431

PHYSICS Atoms & Nuclei Atoms Radiation Film Badge (Dosimeter) “Proton” And “Neutron” Demonstration Radiation Film Badge Dosimeters are routinely used by workers to monitor radiation exposure and these badges can be opened to show This set is designed to demonstrate the stabilizing effect of neutrons on the different types and thicknesses of filters contained within. The the atomic nucleus. The “protons” are made of disc magnets while badge has six filters: the “neutrons” are made of browned iron discs. The “protons” will, because they are magnetized, repel one another when placed on a flat • An open window which allows all incident radiation that can surface or overhead projector. The stabilizing effect of the “neutrons” is penetrate the film wrapping to interact with the film. A thin plastic illustrated by placing them between the “protons”, thereby eliminating film which attenuates beta radiation but passes all other radiations the repulsive force. The “protons” are supplied with a red marking, the “neutrons” with blue. Supplied as single pieces. •A thick plastic filter which passes all but the lowest energy photon radiation and absorbs all but the highest beta radiation. Type £1.93 ea MO150900 Proton £2.91 ea •A dural filter which progressively absorbs photon radiation at MO150905 Neutron energies below 65 keV as well as beta radiation. Chain Reactions •A tin/lead filter of a thickness which Chain Reaction Apparatus allows an energy independent dose response of the film over the photon This apparatus has been designed as a means to demonstrate a energy range 75 keV to 2 MeV. chain reaction, using ordinary matches. The apparatus consists of an aluminium plate with holes and a mounting rod. One side of the •A cadmium lead filter where the plate has a level surface but the other side has concentric protective capture of neutrons by cadmium channels milled out of the solid aluminium. Six metal pins are included produces gamma rays which for damping the chain reaction. Ordinary matches are required for blacken the film thus enabling the demonstrations but are not supplied as standard. Experiments assessment of exposure to should preferably be carried out in a fume cupboard, due to amount of neutrons. Please note that these smoke generated by the matches burning. Please note: each experiment badges are not functional, and are uses approx. one small box of supplied without film. They are for matches. The apparatus can demonstration purposes only. be used to demonstrate: An uncontrolled chain reaction; RA105600 £11.88 ea a controlled chain reaction; a partly controlled chain reaction. Half Life Simulation Replacement metal pins are available separately. This pack of 500 x 10 mm plastic cubes is used to investigate and demonstrate half-life. Each cube has one black face, the other faces all being yellow. The cubes are thrown or scattered like dice and those which land with the black face uppermost represent radioactive nuclei which have decayed. The black upward facing cubes are then removed, the remaining cubes thrown again and the process repeated. The removed cubes represent radioactive decay and a decay curve can be plotted from the results. RA170200 ✓ £68.69 ea RA75750 ✓ £82.44 set SPARES & ACCESSORIES ✓ £14.31 pk RA170205 Spare Pins Ionising Radiation Protactinium Generator Alpha Particle Scattering Apparatus The Protactinium Generator is ideal for demonstrating radioactive decay. The half life of the isotope is short enough that students can A low cost apparatus for the demonstration of Rutherford scattering complete the decay curve within a single lesson and is perfect for use by means of a gravitational analog of inverse square law repulsion. with a datalogger and GM tube sensor or a standard GM tube and Comprises a wooden launching ramp with a guiding groove running counter. The generator is completely sealed in a leak proof enclosure down its curved front face along its length and index marks at 40, 60, and consists of uranyl nitrate and an organic solvent. These settle into 80 and 100mm height above the base, that provides 4 pre-determined two distinct layers but when shaken together react and produce a short launching heights. Also included is a spun aluminium hill along with term burst of beta radiation with a half life of the order of about 1 a 19mm diameter steel ball. The shape of the aluminium hill has minute. This can be observed using a GM Tube with either a counter been carefully determined by varying its height above the base line by or datalogger. The generator comes complete with an SDS and has a an amount arrived on the basis of the reciprocal of the radius. Ramp recommended storage period of up to 8 years. Dimensions (L x W x H): 300 x 50 x 105mm. Hill Dimensions (Dia. x H): 280 x 60mm. Specifications: • Radioactive Half Life: 70€s • Experiment Time: 5 to 10 minutes • Radiation Type: Beta Decay of Pa234 • Maximum Product Lifetime: 8€Years • Active Ingredient: Uranyl Nitrate RA95600 £64.94 kit RA115600 ✓ £337.50 ea 432 More products and offers available on our website!

Atoms & Nuclei PHYSICS Ionising Radiation continued Radioactive Source Handling Tongs Radioactive Rock Specimens Custom designed tongs for handling the radioactive sources RA95622 - RA95626. Stainless steel construction. Dimensions (W x L): 12 x The set comprises 6 different minerals (uraninite, thorianite, euxenite, 165mm. allanite, pyrochlore and rødberg, red rock from the Fens Formation in Norway) containing uranium, thorium, yttrium and/or cerium in various combinations and quantities. The minerals produce from a weak to a strong reading on a GM sensor or counter and are excellent alternatives to artificial sources. RA110110 ✓ £14.31 ea RA180000 £116.19 set Radioactive Storage Cabinet, Premium The following are sealed radioactive sources, the An enamelled sheet-steel cupboard with radioactive material being enclosed in foil and fixed a lockable, vented door. Comes with 1 within a metal cylinder with 4mm diameter stem for narrow fixed steel shelf, 2 holes at the mounting purposes. There is also wire gauze across the rear for wall mounting and standard open end of each cylinder, for added protection. Each international warning sign. Dimensions source comes supplied in a small lead container within (H x W x D): 38 x 38 x 38 cm. a labelled MDF box with hinged lid. ST68600 £249.94 ea Radioactive Source Americium 241 Radioactive Storage Cabinet with Combination Lock 5 µCi (185 kBq) of americium-241 incorporated in a silver-palladium disc which transmits a substantial proportion of the alpha particles and A strong steel cabinet with a combination a small amount of low energy gamma emission. Half-life: 458 years. lock, suitable for storing radioactive sources etc. Supplied with a yellow radioactive RA95626 ✓ £868.75 ea warning sign. Can be wall mounted. Dimensions: 38 x 30 x 30 cm. Radioactive Source Strontium 90 ST170100 £162.50 ea 5 µCi (185 kBq) of strontium-90 in equilibrium with its daughter nuclide yttrium-90, incorporated in a silver disc allowing the major proportion of the beta radiation to emerge. Emission: Half-lives: strontium-90: 28 years; yttrium-90: 64 hours. RA95622 ✓ £868.75 ea Hazard Warning Tape Radioactive Source Cobalt 60 Self-adhesive vinyl tape. Supplied in a continuous roll. Text and symbols in black. Dimensions (L x W): 66 metres x 25mm. 5 µCi (185 kBq) of cobalt-60 and is covered by an aluminium disc to shield beta particles so that only gamma radiation is emitted. Half-life: 5.26 years. RA95624 ✓ £868.75 ea LA09786 Type £10.50 ea Caution Radioactive Material Warning Signs Vinyl, self adhesive. Dimensions (W x H): 20 x 30 cm. SA27060 Type £7.09 ea Radiation Risk timstar.com 433 +44 (0) 3333 442 443 [email protected]

PHYSICS Atoms & Nuclei Ionising Radiation continued Spark Discharge Apparatus Frederiksen Spark Detector An instrument useful in showing the random nature of radiation, it produces spectacular bright sparks when alpha particles are ionised The Alpha particle Spark Detector from Frederiksen has been developed between the electrically charged circular wire grid and steel electrode. to enable visualization of alpha particles. The apparatus can be It comes complete with sliding holder for an alpha radiation source, an likened to a GM tube, but using atmospheric air instead of the diluted accurate scale to measure the effects of distance between the source quenching gas in the tube. When alpha particles ionize the air in the and the grid and is built in a vacuum formed black plastic case. All of spark gap of the detector, bright sparks can be both seen and heard. the electrical connections from an EHT power supply are through 4mm The apparatus incorporates a transparent lid, which allows clear insulated sockets. Connections to a Timer Scaler and Frequency Meter observation of the sparks. The detector requires connection to a safe are via a BNC to BNC cable. Requires a 5kV EHT power supply and high voltage (EHT) power supply with a voltage range of 0-5 kV or 0-6 alpha radiation source. Weight: 400g. Dimensions: (L x W x H) 310 x kV. The apparatus can be safely used directly on a bench top or table 77 x 85mm. and includes a removable threaded steel rod for mounting the unit on a radioactivity bench (RA95610) or squat retort base with thumbscrew (ST96274). • Gives clearly visible and audible response to alpha radiation • Demonstrates the ionization of air by alpha particles • Detects alpha radiation from radioactive minerals or radioactive sources • Allows study of range in air & shielding by different materials RA170300 £156.25 ea Ratemeter RA95605 ✓ £243.75 ea This ratemeter/geiger counter is a battery operated portable GM- Scaler Timer Frequency Meter counter ideal for field use and equipped with a built-in GM-tube. The built-in GM-tube is sensitive to alpha-radiation, beta-radiation, and A multi-purpose instrument, combining the functions of a multi-purpose gamma-radiation. Developed and designed especially for educational timer, a ratemeter and a frequency meter in one compact unit. It can purposes. be used as a simple stopwatch to more sophisticated applications such as dynamics experiments with air tracks etc. The scaler and ratemeter • 8 fixed count periods (1, 10, 20, 30, 40, 50, 60 or 100’s) modes allow numerous radioactivity experiments to be undertaken. • Display of dose rate (µSv/h) reduced to Cs-137 • Max, min and average view for µSv/H and CPS It has four, 7-segment LED digits 13 mm high. The high brightness and large size display make it ideal for classroom demonstrations. The microprocessor based design minimises the number of controls required and these are clearly labelled so that the instrument is very straightforward to use. The GM tube input is a TNC socket, and a TNC-to-BNC adaptor is required for connecting a GM tube with a BNC •plug. Timer - Four Auto Ranges: 0 to 9.999 s, 10 to 99.99 s, 100 to • 999.9 s, 1000 to 9999 s Scaler - Three Auto Ranges: 0 to 9.999 x 1000 counts, 10 to 99.99 x 1000 counts, 100 to 999.9 x 1000 counts Accuracy: • ±0.01% Sensitivity: 160 mV peak Ratemeter - Three Auto Ranges: 0 to 9.999 x 1000/s, 10 to • 99.99 x 1000/s, 100 to 999.9 x 1000/s Frequency Meter - Three Auto Ranges: 0 to 9.999 kHz, 10 to 99.99kHz, 100 to 999.9 kHz RA75825 £425.00 ea •Max Input Signal: 20 V rms •Max Sensitivity: 250 mV rms •Range: 10 Hz to 1 MHz Ionization Chamber Demonstrate the ionization of air by alpha particles with this ionization chamber in combination with an electrometer EL150840 and an alpha source RA95626. RA150000 ✓ £58.69 ea TI86480 £393.75 ea 434 More products and offers available on our website!

Atoms & Nuclei PHYSICS Ionising Radiation continued Geiger-Muller Counter BNC to TNC adaptor lead This GM counter is the most versatile and easily operated model yet. The counting time can be set to 1, 10, 60 or 100 seconds or set to Allows a GM tube with BNC plug to connect to a Scaler Timer manual start/stop. Counting may be set to run repeatedly and the Frequency Meter with TNC socket. last, complete result is displayed in the main display while new counts accumulate in the auxiliary display. The counter accepts both BNC and RA180525 £25.56 ea Jack type GM tubes. With the optional USB connection it can interface with a computer - and if a pulse output for further hardware processing is required, that is also available. For demonstration purposes the authentic clicking Geiger-counter sound may be turned on if preferred. Other improvements over the previous model include a lower overall system dead time and lower current consumption, with the unit now being powered by AA batteries. The counter may also be powered from the optional mains adapter. Scaler Timer BNC Retrofit For owners of the IPC Scaler Timer Frequency Meter with a PET socket, this service is to have your unit retrofitted with a TNC socket. Includes collection and delivery, a full test, as well as a TNC-to-BNC adapter so that a BNC GM-tube can be connected. TI180489 £93.69 ea ZP1481 GM Tube RA67530 Geiger-Muller Counter ✓ £493.75 ea SPARES & ACCESSORIES ✓ £26.19 ea A sensitive ZP1481 GM tube in a robust plastic housing, with a captive RA110100 Mains adapter £46.19 ea flying lead terminating in either a TNC or BNC plug. The housing RA120100 PC Communication Lead for GM Counter £2.21 pk features a screw-thread and rod for mounting in a squat retort base or BA01983 2 x AA Batteries radioactivity bench. If purchasing for use with the TI86480 Scaler Timer Frequency Meter, the TNC version is recommended. Otherwise, a BNC Geiger-Muller Tube - BNC version is likely to fit other counters and meters. A multipurpose GM tube, sensitive to alpha, beta and gamma • 17 mm window diameter radiation. Mounted in a housing with protective cover and 10 mm • 2.5-3 mg/cm3 window thickness • 430 V recommended working voltage • Max background count: 30/min • 120 µs dead time diameter support rod. It is complete with integral lead and BNC connector. This GM tube does NOT have a built-in anode resistor, and therefore requires a counter with a built-in anode resistor. Suitable for use with RA67530. ••• Window diameter: 9.14 mm 500 V Recommended bias voltage: BNC plug RA180900 Type ✓ £374.94 ea RA180902 ✓ £374.94 ea TNC Plug BNC Plug GM Tube Test Source RA67535 £156.25 ea This test source is used to test the β-efficiency of GM tubes. It comprises a 300 ±5 mg potassium chloride, in a 2 x â„•13 mm cavity, sealed with clear film of a specified thickness and density. This is naturally radioactive due to the presence of 0.0117 % of potassium-40, which has a mean β energy of 560.2 keV. It should be stored away from sunlight as the UV will degrade the plastic. Please note that this is NOT considered a radioactive source, and should not be labelled or stored as such. If purchasing a OUR EXPERT SAYS... GM tube for leak test and contamination monitoring, it must have a window of at 15 mm diameter to be sufficiently sensitive. A tube with a smaller window can be used for teaching and RA170900 £53.69 ea demonstration purposes. +44 (0) 3333 442 443 [email protected] timstar.com 435

PHYSICS Atoms & Nuclei Ionising Radiation continued Sealed Radioactive Source Holder Geiger-Muller Tube, Extra Sensitive - BNC This holder has been designed to accommodate the sealed radioactive sources. It comprises a tube with 4 mm sockets at either end, into one This extra sensitive GM-tube has a large window which makes the of which the source is inserted. The sockets are electrically connected, detector well suited for measuring low activity sources. This provides so an electric potential can be applied to the source. The holder fits into more counts and thus improves counting statistics for more accurate the RA95592 holder (sold separately) which can then be mounted into determinations of half-lives, etc. The GM-tube housing is supplied with a ST96274 squat retort base, or an OP104656 sliding saddle to use on a protective cover as well as a protective grid in front of the window. the Radioactivity Bench Kit. It is sensitive to alpha, beta and gamma radiation. It is complete with a removable protective cap, holder, and integral lead with BNC plug. This GM tube does NOT have a built-in anode resistor, and therefore requires a counter with a built-in anode resistor. Suitable for use with RA67530. ••• Useful diameter: 28.6 mm 500 V Recommended supply voltage: BNC plug RA170800 £4.94 ea RA95590 £356.25 ea Holder for Extra Sensitive GM Tube Frederiksen Absorption Plate Set Fitted with a 10mm diameter mounting rod, so The holder is designed for Frederiksen radioactive sources and the GM-tube may be held safely in the squat is supplied with a set of absorption plates for experiments with retort base. radioactivity. It has a 10 mm diameter support rod and a 6 mm diameter rod for hanging absorption plates in front of the radioactive RA95592 £18.06 ea source. It can either be carried in a rider on the radioactivity bench, or in a squat retort base ST96274 (sold separately). The absorption plates have a hole in one corner for hanging from the source holder, and are supplied in a convenient storage box. • Lead plates: 5× 2 mm thick, and 10× 1 mm thick (enamelled to protect from lead contamination) • Aluminium plates: 2× 3 mm thick, 6× 1 mm thick, and 4× 0.5 mm thick Radioactivity Bench Kit RA95620 ✓ £78.69 set £33.69 ea A bench for radioactive sources and GM-tubes, providing a stable SPARES & ACCESSORIES and convenient setup, allowing reproducible results when making ST96274 experiments with radioactivity. Investigate how the radioactive radiation Squat Retort Base spreads from the source in both angle and distance or investigate how radiation is absorbed by lead and aluminium. The bench is 60 cm in length, with a millimetre scale. Two riders are included, one for carrying a GM-tube, and the other for carrying the source holder*. The source holder can be fitted with a 6 mm diameter steel rod, for hanging absorber plates in front of the radioactive source. It can be rotated, and is fitted with a degree scale ±110° ×1° • Lead plates: 5× 2 mm thick, and 10× 1 mm thick (enamelled to protect from lead contamination) • Aluminium plates: 6× 2 mm thick, and 4× 0.5 mm thick *Please note: This holder is only suitable for use with Frederiksen radioactive sources, which are available by special request only. The sealed radioactive sources can be used instead, with some limitations, using a RA170800 source holder. Frederiksen Absorption Plate Set The absorption plates have a hole in one corner for hanging from the source holder, and are supplied in a convenient storage box. • Lead plates: 5× 2 mm thick, and 10× 1 mm thick (enamelled to protect from lead contamination) • Aluminium plates: 2× 3 mm thick, 6× 1 mm thick, and 4× 0.5 mm thick RA95610 £231.25 kit RA95615 £52.44 set 436 More products and offers available on our website!

Atoms & Nuclei PHYSICS Ionising Radiation continued Dry Ice Maker Diffusion Cloud Chamber The Dry Ice maker produces individual pellets of dry ice from a Carbon dioxide syphon cylinder which has an internal dip tube. Small pellets of Continuously operating diffusion cloud chamber for observation of dry ice can be made whenever and wherever they are required. The unit alpha particle tracks. 50 g of dry ice and 1-2 mL of alcohol will run it is screwed onto the outlet of a CO2 syphon cylinder and is operated by for about 30 minutes. The chamber requires no high voltage sources. opening and closing the valve. Once the pellet is made and the cylinder Equipped with a 12 V lamp. Requires dry ice pellet and alpha source valve is closed, the nylon wrapper is peeled back revealing the dry ice RA67515. Diameter 120 mm, height 90 mm. pellet, which can be removed wearing protective gloves. Takes approx. 1 minute for the production of one 30g pellet. Specification: • Pellet size formed approx (Dia. X H): 50 x 25mm • Weight approx: 30 grams. • CO2 cylinder not included. RA67510 £187.44 ea Leather Gloves Gauntlet type with heat resisting leather palm, fleece lined. Dimensions (L): 300mm. RA85635 £181.25 ea SA13455 £7.61 pr The Dry Ice Maker requires a carbon dioxide syphon cylinder Physics Posters with an internal dip tube. A suitable cylinder can be purchased from the BOC (British See page 602 Oxygen Company). The BOC can be contacted on 0808 278 4458. +44 (0) 3333 442 443 [email protected] timstar.com 437

PHYSICS Atoms & Nuclei Muons Spare Absorber Plates Muon Observatory A pack of five 148 x 148 x 3 mm steel plates, for use as replacement or additional plates with the Muon Observatory. Every second, each square meter of the Earth is hit by some 10,000 particles originating from cosmic radiation. Most of these are muons RA170502 ✓ £38.69 pk produced in the uppermost part of the atmosphere, where even more energetic particles collide with air molecules. The purpose of the muon Coincidence Box observatory is to facilitate the study of these particles. Muons occur as both positively and negatively charged particles. A muon is approx. 200 The coincidence box is used for the detection of simultaneous events times heavier than an electron. Muons are unstable with a half-life of in a GM tube and can be used in nuclear physics and in the study of 2.197 µs. cosmic radiation. It is required in order to use the Muon Observatory correctly. The output of the box sends a pulse to an external counter Shower Mode when two (or three) of the inputs receives a pulse simultaneously (in reality this means within 1 microsecond). The particles from the cosmic radiation often spread out their energy in a shower of secondary particles, which in special cases can be The coincidence box can use both conventional GM tubes with BNC enormous and hit an area of several square kilometres of land surface. connectors and GM tubes with 6 mm Jack plugs, provided that the In the shower mode setup, a shower is recorded as a coincidence event detectors are identical. Each of the three inputs can be enabled or from three GM tubes arranged in a triangle. This geometry ensures disabled by means of a switch. The device is powered by a mains that no single particle can be detected in all three tubes. Evidence of adapter (included). The output pulses are registered by a GM counter showers may be facilitated by allowing the radiation to pass through (RA67530) or the Electronic Counter (TI170300). Comprehensive something that is slightly denser than air – e.g. a number of steel plates. instructions are included. Telescope mode In telescope mode two (or three) GM tubes are arranged in a line, and if a muon passes through all tubes in the setup, a pulse is output from the coincidence box. Placing steel plates between the tubes ensures that only very high-energy radiation is recorded. The third GM tube is used if you want additional suppression of random coincidences. The telescope can be set at different angles relative to vertical. Measurements To register coincidence between two or three GM tubes, a Coincidence Box (RA170505) is required. The output from the coincidence box goes to an Electronic Counter (TI170300), which is set to count with manual start and stop. Contents Muon observatory 25 x 3 mm thick steel absorber plates Also required: • Coincidence Box (RA170505) • Extra sensitive (large area) GM tubes x 3 (RA95592 x3) • Please note: identical detectors must be used • Electronic Counter (TI170300) Optional • Additional absorber plates (RA170502) - up to a total of 40 (max.) RA170500 ✓ £512.50 ea RA170505 ✓ £243.75 ea 438 More products and offers available on our website!

Atoms & Nuclei PHYSICS Teltron Tubes Deflection E-M Tube Universal Stand For investigating electron beams in electric and magnetic fields and For mounting all demonstration tubes and the determining specific charge e/m through compensation of magnetic optical equivalent. The tube holder consists of deflection by electrostatic deflection. Also for estimating the speed of powder-coated cast aluminium with a clamping electrons. The integrated plate capacitor allows electron beams to be fork made of heat resistant plastic and rotatable deflected by using the Helmholtz coils (not supplied). The beam path is by 360°. The base plate contains two boreholes visible on the fluorescent grid which is inclined 15 degrees in relation to for mounting demonstration Helmholtz coils. the beam axis. Equipped with an integrated focusing electrode system. Including an anti-skid support with three rubber feet. Weight: 2kg. Supplied without tube. Dimensions (L x W x H): 240 x 180 x 350mm. RA67550 ✓ £268.75 ea Maltese Cross Tube RA67580 ✓ £831.25 ea For demonstrating the straight propagation of electron beams in Teltron Dual Beam Tube field-free spaces by projecting the shadow of a Maltese cross on a fluorescent screen. Also intended for observing the focusing of electron The dual beam tube can be used to determine the specific charge beams by magnetic fields as an introduction to electron optics. The e/m from the diameter of the path followed by electrons fired into the lower section of the maltese cross has a hole 3mm dia. which makes tube from a perpendicularly mounted gun with a vertically aligned it possible to ascertain the orientation of the cross’s shadow under the magnetic field and observation of the spiral path followed by electrons influence of magnetic fields. fired axially into a coaxial magnetic field. The dual beam tube is a partly evacuated electron tube, filled with helium at low pressure and RA67570 ✓ £587.50 ea equipped with both axial and perpendicular electron guns. The electron beams are perpendicular to one another and a common deflector Electron Diffraction Tube plate is provided for both guns. The electron beam source is an oxide cathode heated indirectly via a heating coil. The electron paths show The electron diffraction tube illustrates the wave nature of electrons by up as a fine, slightly greenish beam allowing observation of interference caused by a beam of electrons due to impact excitation of the passing through a polycrystalline graphite target on to a fluorescent helium atoms. Requires a 300 V or screen. The wavelength of the electrons can be calculated for various anode voltages from the radius of the diffracted rings and the distance •500 V DC power supply. between the crystal layers in the graphite. The electron diffraction Filament voltage: max. 7.5 V tube is a highly evacuated tube with an electron gun consisting of a AC/DC pure tungsten heater filament and a cylindrical anode all contained in a clear glass bulb. The electrons emitted by the heated cathode are • Anode voltage: max. 100 V DC constrained to a narrow beam by an aperture and are then focussed by • Anode current: max. 30 mA means of an electron-optical system. The resulting tight, monochromatic • Deflector voltage: max. 50 beam then passes through a micro-mesh nickel grating situated at • V DC the aperture of the gun. Onto this grid, a thin layer of polycrystalline graphitised carbon has been deposited by vaporisation. This layer Glass bulb: 130 mm dia. affects the electrons in the beam much like a diffraction grating. The result of this diffraction is seen in the form of an image comprising two • approx. concentric rings that become visible on the fluorescent screen. A spot Total length: 260 mm approx. resulting from the un-deflected electron beam continues to be visible at the centre of the rings. Also requires an EHT power supply. RA130515 ✓ £925.00 ea Specifications: Perrin Tube • Max. filament voltage: 6.3 V AC For demonstrating the evidence of the particular nature of cathode • Max. anode voltage: 5 kV rays, establishment of negative sign of charge, the “electron” as an • Anode current: approx. 0.1 mA at 4 kV atomic particle, concept of a “time-base”, operation of a cathode ray oscilloscope, simple Lissajous’ figures. The diode gun, a tungsten wire “hairpin” filament and a cylindrical collimating anode, projects a narrow beam of cathode rays into the evacuated experimental zone. This beam traverses the sphere to impinge on the luminescent screen in a spot about 4mm in diameter. The narrow beam may be deflected in a vertical plane to enter the Faraday cage by using Helmholtz Coils. A further and horizontal deflection can be obtained using an Auxiliary Coil, thereby constructing a simple cathode ray oscilloscope. All connections are made on the Universal Stand. RA130500 ✓ £925.00 ea RA75855 ✓ £643.75 ea +44 (0) 3333 442 443 [email protected] timstar.com 439

PHYSICS Atoms & Nuclei Teltron Tubes continued Helmholtz Coils for Use with Fine Beam Tube Helmholtz Coils The Pair of Helmholtz coils is used for generating a homogeneous magnetic field and for the determination of the specific charge of the For generating a homogeneous magnetic field when mounted in the electron e/m in conjunction with the dual-beam tube. The coils can universal stand in conjunction with the tube program for demonstration be switched in parallel or in series. A spring clip on the top crossbar is experiments. 2 coils in a plastic casing on an insulated stand rod. used to mount the Hall sensor during measurements of the magnetic field. The maximum field strength generated by the coils (~ 4 mT) • Coil Dimensions (Dia.): 136 mm is approximately 750 times weaker than that produced by an MRI • Number of turns: 320 machine (~3 T), which are known to be safe for use by people with • DC resistance: approx 6.5Ω medical implants such as pacemakers. For use with RA130505. • Load rating: 1.5 A Requires a 0-20 V DC 5 A power supply. • Connections: two 4 mm jacks per coil • Stand Rod Dimensions (L x Dia.): 145 x 8 mm • Coil Dimensions (Dia.): 295mm • Coil spacing: 150 mm • Number of turns per coil: 124 • DC resistance: 1.2 ohms each • Maximum coil current: 5 A • Maximum coil voltage: 6 V • Maximum flux density at 5 A: 3.7 mT • Weight: 4.1 kg approx. RA67560 ✓ £368.75 pr Fine Beam Tube (Neon-Filled) with RA130510 ✓ £512.50 ea Connector Base Plug To Socket Leads The Fine Beam Tube is used for investigating the deflection of cathode rays in a uniform magnetic field produced by a pair of 300mm A high quality extension lead consisting of highly flexible 384/0.05mm Helmholtz coils. In addition, it can also be used for quantitative silicone cable terminated at one end by a standard 4mm plug and a determination of the specific charge of an electron e/m. Located 4mm line socket at the other. inside a glass bulb with a neon residual gas atmosphere is an electron gun, which consists of an indirectly heated oxide cathode, a Wehnelt EL130956 Colour £5.53 ea cylinder and a perforated anode. The gas atoms are ionised along the EL130957 £5.53 ea path of the electrons and a narrow, well-defined, luminescent beam is Red produced. Incorporated measurement marks facilitate a parallax-free Black determination of the diameter of the circular path of the beam deflected in the magnetic field. The Fine Beam Tube is mounted on a base with coloured connectors. In order to protect the tube, a protective circuit is built into the base, which shuts off any voltage in excess of the base’s pre-set cut-off voltage. The protective circuit prevents excessive voltages from damaging the heater filament and ensures a “smooth” switch-on response once the voltage is applied. Requires a 0-300 V DC power supply and 300 mm Helmholtz coils. • Filament voltage: 4 to 12 V DC • Filament current: 300 to 450 mA • Anode voltage: 200 to 300 V • Anode current: < 0.3 mA • Diameter of fine beam path: 20 to 120 mm • Division spacing: 20 mm • Tube diameter: 160 mm • Total height incl. base: 260 mm • Base plate: 115 x 115 x 35 mm • Weight: approx. 820 g 4 mm socket to 2 mm plug Adapters These adaptors convert a 4mm straight plug to a 2mm banana plug. They have a nickel plated brass spring and are housed in ABS. • Current rating: 32 A • Voltage rating AC: 30 V • Connector type: Banana plug to straight socket • Contact material: Brass • Contact plating: Gold • Insulator material: ABS • Length: 44.9 mm RA130505 ✓ £1,056.25 ea EL170420 Colour £2.49 ea EL170422 £2.49 ea 440 Red Black More products and offers available on our website!

Electrostatics PHYSICS Charge Nylon Line for Electrostatics Friction Rods 100€m reel of monofilament nylon line, suitable for use with stirrups, A pith balls etc. 4€lb breaking strain. B C Type Length Diameter EL140195 £2.70 ea EL18665 A Ebonite (pure) 300 mm 12 mm £3.00 ea Pith Ball Support EL18666 B 12 mm £2.24 ea EL18667 C Glass 300 mm 12 mm £4.28 ea This support is supplied with a hook for EL130470 15 mm £1.86 ea conveniently holding a pair of pith balls Perspex 300 mm connected by a string. Manufactured of nickel-plated brass with a plastic support Nylon Rod 250 mm base. Pith balls (EL150852) sold separately. Dimensions€(W€x€L€x€H):€100€x€70€x€220€mm. Silk Cloth A silk cloth ideal for electrostatic investigations. Dimensions (L x W): 300 x 300mm. EL81495 £4.99 ea Electrostatic Strips EL150850 £30.56 ea This pack of electrostatic strips allows students to study charge in ELECTROSTATIC SERIES different materials for electrostatic experiments. The pack consists of 10 clear polycarbonate strips, which tend to gain a positive charge when The Electrostatic Series is a guide to whether one rubbed with a cotton duster and 10 white polystyrene strips, which tend material is likely to gain a positive or negative charge to gain a negative charge when rubbed. Suitable for use with our brass when charged (rubbed) by another material in the series. If a material which wire stirrups. is placed higher in the list is charged / rubbed by a material which is lower in the list, the higher one is likely to remain or become positively charged (lose or not gain electrons) and the material lower in the list is likely to remain or become negatively charged (keep or gain electrons). ELECTROSTATIC SERIES ELECTROPOSITIVE (+) ACETATE (cellulose acetate) ACRYLIC (PERSPEX) Quantity EL71600 10 £33.06 pk POLYCARBONATE £24.31 pk Tendency to lose electrons Tendency to gain electrons NYLON Stirrup Pack GLASS Pack of 10 brass wire WOOL stirrups for use with electrostatic strips. FUR / HAIR Supplied with fine nylon line for suspending from SILK retort clamp. COTTON EBONITE POLYTHENE Quantity ELECTRONEGATIVE (-) RUBBER 10 POLYSTYRENE EL71605 +44 (0) 3333 442 443 [email protected] timstar.com 441

PHYSICS Electrostatics Charge continued Gold Leaf Electroscope Pith Balls The ‘Malvern’ dual purpose gold leaf electroscope has a metal plate to which a single gold leaf may be attached and is supported by an These expanded polystyrene balls are used for demonstration insulating bush in a metal case with 4mm socket earthing terminal. A experiments with electrical charge. Dimensions (Dia.): 12mm. scale is provided for measuring the deflection of the leaf. Quantity £12.40 pk EL150852 10 Brass Rod With Insulated Handle For showing that metals can acquire a static charge. The insulated handle is required to avoid unintentional discharge. Dimensions (L x Dia.): 250 x 8mm. Shaft Dimensions (L x Dia.): 100 x 12mm. Insulated Shaft Dimensions (L x Dia.): 100 x 12mm. EL150860 £12.49 ea Electroscope EL81480 Type ✓ £27.44 ea Gold Leaf Electroscope £12.44 pk Consisting of a metal case with ground glass front and rear windows containing a metal plate with an attached special metal leaf supported SPARES & ACCESSORIES by an insulated bush. The case is provided with a 4mm earthing socket. EL81482 An internal transparent scale divided 0 to 90 x 10 degrees is provided Gold Leaf, pack of 6 for measuring the deflection of the leaf. Interchangeable electrodes are provided, a 50mm disc top plate and metal ball 25mm dia. to show Frederiksen Electroscope that charge will be the same on both surfaces. Dimensions (L x W x H): 143 x 63 x 112mm. An open design electroscope from Frederiksen which does not require gold leaf, for demonstrating electrostatic charges. When the electroscope has a charge applied to it, the pointer turns, and indicates the magnitude of the charge. The device features a 150 mm diameter protective ring, which can be grounded. Supplied with a 15 mm diameter charge collector with 4 mm plug. EL62420 £44.94 ea EC170100 £175.00 ea 442 More products and offers available on our website!

Electrostatics PHYSICS Charge continued UVC Lamp UVA Lamp & Holder A UVC lamp for lamp holder EC180120, suitable for experiments with the photoelectric effect. This light is An ultraviolet lamp in a high-quality housing with an aperture. The unit harmful, especially to eyesight. It is recommended that bare connects directly to the mains via an IEC lead, and the housing has an skin is covered, UV protective goggles worn, and the time on/off switch, and a screw-thread to attached a mounting rod. The unit the light is switched on reduced to a minimum. is supplied with a UVA emitting lamp. This light is not harmful to skin or eyesight. A UVC lamp (EC180122) is available for photoelectric work. • 11 W lamp • 350-400 nm • emission spectrum 370 nm peak EC180122 £64.94 ea EC180120 £162.50 ea Zinc Plate with 4mm Plug for Electroscope Zinc Plate For Photoelectric Effect This mounted zinc plate has been designed for use with the Frederiksen electroscope (but can also This Zinc Plate can simply be placed on top of an existing electroscope be used with any electroscope with a 4 mm plug plate to allow demonstration of the Photoelectric Effect using UV light. socket) for demonstrating the photoelectric effect. The plate must be cleaned on both sides before use, to remove any If the electroscope is charged and the attached oxide etc., using wire wool or emery paper. The zinc plate needs to be zinc plate is illuminated with UV light from a negatively charged for the experiment to work. This can be done by source such as Mercury lamp, the electroscope will rubbing a Perspex (acrylic), acetate or polycarbonate rod (to charge become discharged. it), then placing this close to the zinc plate on the electroscope - BUT WITHOUT TOUCHING IT ON THE EC170110 £13.06 ea PLATE. The plate should then be touched with a finger, the finger PHOTOELECTRIC EFFECT removed, followed by removal of the charged rod. The gold leaf The work function of zinc is 4.3 eV, should then deflect outwards, as which requires light of wavelength no it has become charged. The best greater than 288 nm to cause photoelectric emission. UV light source to use is one with a quartz glass lamp envelope. Dimensions: 50 x 50€mm. EL150610 £4.13 ea Coulombmeter Kit Electrostatic Charge Indicator For charge detection and measurement. Useful for a wide range of This charge indicator allows for easy, rapid investigation of electrostatic experimental applications including charging by induction, Faraday’s effects. When it is moved towards a charged object, one of the LEDs ice pails, Coulomb’s law and capacitance of an isolated sphere. The will light up - red indicates that the object is positively charged, and 3.5 digit liquid crystal display has 13mm high digits with a wide field of green indicates a negative charge. When a polythene rod is rubbed view unobscured by trailing leads. The display also provides indication using a piece of cloth, for example, the green LED comes on when it is of polarity and low battery. The unit is exceptionally easy to read. Two brought near the polythene, and red LED when near to the cloth. This colour coded 4mm sockets are located on the sides for maximum demonstrates how negative charge has been transferred from the cloth convenience and anti-slip feet are fitted to the base. Low operating to the rod. Requires 1x PP3 9V battery (not included). current gives expected battery life in excess of 500 hours. Housed in a robust, ABS plastic case. Supplied with charge plate, battery and ••••i•••nstRIORALCrneeaucavpascncpeuoutkgiartolarleucoaRng:itca tesieaoy.ds:nnCi:sc :tu ear:nre cnet:: 0 to 1999nC 1nC 10 x full scale ±10% of full scale 100GΩ 1pA (10pA max) 4.7mF EL81490 ✓ £74.94 kit EL101540 £35.56 ea SPARES & ACCESSORIES £3.91 ea BA01970 PP3 Batteries timstar.com 443 +44 (0) 3333 442 443 [email protected]

PHYSICS Electrostatics Charge continued Electric Fields E-Field Apparatus Electrometer This apparatus allows visualisation of electric fields between various Used as a picoammeter, this electrometer is useful for photoelectric electrode configurations, in a similar way to how iron filings allow effect experiments (e.g. determining Planck’s constant) and ionisation visualisation of magnetic fields. It is constructed from transparent experiments when used with the ionisation chamber RA150000. As a acrylic, which allows it to be placed on an overhead projector for class nanocoulombmeter, it is possible to determine the capacitance of a demonstrations but can also be used on a white surface for use with parallel plate capacitor EL120700, and measure electrostatic induction visualisers or for direct observation by smaller groups. In order to create in Faraday’s Ice Pail experiment. The instrument’s design almost electric fields large enough to influence the particles, a high voltage, completely eliminates leakage currents, for increased accuracy. Two 4 low current 2-5kV EHT power supply is required. Apparatus includes mm sockets provide output for connection to a data logger or meter. It electrodes, clear acrylic base with 4mm sockets to clamp electrodes uses a 9 volt battery, which gives approximately 25 hours use. and connect power supply, petri dishes and instructions. Also requires liquid paraffin (PA4452 or PA4454 and semolina (not supplied). Base • Current ranges: ±5, ±50, ±500 pA dimensions (L x W x H): 150 x 150 x 65 mm. • Charge ranges: ±5, ±50, ±500 nC • Output : 4 mm sockets ± 0.5 V FSD EL71550 £87.44 ea EL150840 £400.00 ea Parallel Plate Capacitor Kit SPARES & ACCESSORIES £3.91 ea BA01970 PP3 Batteries This Parallel Plate Capacitor demonstrates the working of a capacitor; a device which allows the storage of electrical energy in the electric field created between a pair of conductors on which electric charges of equal magnitude, but opposite polarity, have been placed. The apparatus will show the dependence on capacity to the distance between the plates and the nature of the medium between them. Dielectric materials can be placed between the plates for further investigation. Faraday’s Ice Pail for Electrometer Faraday’s Ice Pail, for demonstrating electrostatic induction. Designed for use with electrometer EL150840 or an electroscope with 4mm socket. Comes with 4 mm plug. Diameter: 68 mm. EL120700 £83.69 kit EC170200 ✓ £21.81 ea Wimshurst Machines Ball on Insulated Rod for Electrometer Wimshurst Machine A 38 mm metal ball mounted on a 130 mm plastic insulated handle, The device generates high voltages for electrostatic experiments. used to transfer an electrical charge e.g. to the Faraday’s ice pail when Voltages of up to 160 kV and sparks 80mm long are possible under connected to an electrometer. ideal conditions. A charge is generated by revolving the two plates in opposite directions. The charge is then collected and stored in the Leydon jars and discharges by the adjustable electrodes.The Leydon jars can be isolated from the system. Plate Dimensions (Dia.): 300mm. EC170300 ✓ £16.81 ea EL40200 £162.50 ea SPARES & ACCESSORIES ✓ £12.44 ea 444 EL190202 Spare Belt More products and offers available on our website!

Electrostatics PHYSICS Van De Graaff Generators Van De Graaff Generator, Premium Van De Graaff Generator, Hand-Driven A top quality Van de Graaff featuring motor or hand drive split dome to show how charge is collected in the dome. The generator uses one A hand driven Van de Graaff generator, which is a very effective unit nylon and one Teflon roller to create a double charging effect and for introducing electrostatics. The length of the sparks generated is sparks up to 10 cm. The 22 cm conductor sphere features a 4 mm wholly dependent upon the speed at which the user turns the handle but socket on the top to accept accessories with a 4 mm plug. For 220/240 sparks of around 20-30mm are comfortably achievable. Dimensions (H V. Dimensions (H x W x D): 560 x 220 x 220 mm. x Dome Dia.): 400 x 200mm. Please note that Discharge Sphere is supplied separately. EL101544 £119.94 ea SPARES & ACCESSORIES £16.19 ea EL130460 Spare main charge belt £8.10 ea EL130465 Spare hand drive belt Van De Graaff Generator The Generator consists of a dome supported by a pillar and a rubber belt driven by an electric motor concealed in the metal base. Static electrical charge is produced by friction between this band and two rollers. The charge is removed from the belt by a metal gauze and stored in the dome. The motor is powered using a mains supply (230 V). The base is fitted with a 4 mm diameter socket which can be used either for supporting a conducting sphere (fitted with a cranked rod support) or for a wire connection to a separate conducting sphere. A cover is provided to keep the Van de Graaff free from dust when not in use. • Diameter of Generator Dome: 220 mm • Total Height: 500 mm • Base (max) Dimensions: 218 x 182 x 93 mm • Operating Voltage: 220 to 240V AC (with 5A cartridge fuse) • Dome Capacitance: (approx) 15 pF • Maximum (intermittent) current: (approx) 6 µA • Maximum Spark Length: (approx) 50 mm • Diameter of Conducting Spheres: 100 mm EL62550 ✓ £537.50 ea £26.81 ea SPARES & ACCESSORIES £4.59 ea EL62560 EL62562 Charge collecting belt Drive belt The generator must OUR EXPERT SAYS... be thoroughly clean EL85100 £393.75 ea and dry for best effect. For a cleaning £13.69 ea SPARES & ACCESSORIES guide, see timstar.co/EL62550-cleaning EL85106 Spare Belt +44 (0) 3333 442 443 [email protected] timstar.com 445

PHYSICS Electrostatics Van De Graaff Generators continued Neon Discharge Tube for Electrostatics Van De Graaff Accessories Kit A large neon-filled gas discharge tube for demonstrating electric charge and polarity. The tube has a clear separation between the two For demonstrating and investigating the nature and behaviour of static electrodes and an orange glow indicates negative polarity. electrical charge. Includes; Brush of hair, Dancing balls, Oscillating ••• sphere, Spiked arm wheel, Neon tester, Plastic comb. Ignition voltage: 90 V Length : 100 mm Diameter : 13 mm EL85110 £78.69 kit EF170100 £18.06 ea Discharge Sphere Insulated Stool For using to discharge the Van de Graaff with sparks up to 10€cm. The For use in experiments with static electricity. A thick, single sheet of clear polished stainless steel sphere is mounted on a stainless steel rod. The Perspex with two line bends to give it height. 30 x 30 cm platform size. base of the rod has a 4€mm hole for connection to the earth socket on 8 cm in height. the Van de Graaff. Sphere diameter: 10 cm. Rod length 41 cm. Please note: retort base not included. FU91980 £64.94 ea Nightlight Burners Foil Cases For containment, gentle heating or weighing of samples, or for a dramatic demonstration of like-charge repulsion with a Van de Graaff Generator. The smaller cases can be used with the Night Light Stands (BU80550). EL62565 £57.44 ea SPARES & ACCESSORIES £32.44 ea ST110120 Retort Base Electric Whirl For demonstrating the effect of electrical discharge from points. The wheel rotates freely on a pivot point mounted on a short stand with a 4mm plug. EL62570 £18.06 ea Size Quantity £6.19 pk BU108020 Small ✓ £1.86 pk 446 BU190025 Large 40 8 More products and offers available on our website!

Electrostatics PHYSICS Electromagnetic Induction Demonstration Dynamo AC/DC Faraday’s Law A hand driven pulley coupled to the smaller dynamo pulley by a rubber belt to give a step-up ratio, to generate both AC and DC. Electrical This Faraday’s Law apparatus consists output is via 2 pairs of 4 mm sockets (AC and DC) and two LEDs. of an acrylic assembly with a mounted 100 turn coil and 4mm sockets. This assembly fits onto the acrylic tube supplied and can be moved up or down the tube, depending on height of drop required. When a small cylindrical magnet is dropped down the tube, an EMF is generated in the coil as it passes through. A PC oscilloscope or standard oscilloscope is then used to measure the amplitude. The height of magnet drop can be varied to show how speed affects the amplitude. Contents include mounted coil, long acrylic tube and magnet. EL71560 £54.94 ea HE53710 £74.94 ea SPARES & ACCESSORIES £2.13 ea EL150582 Spare belt Faraday’s Torch Motor/Generator Unit The shaking of this device causes the magnetic induction of the coil This unit can be used for a variety of purposes to illustrate energy and produces sufficient electricity to drive the LED bulb - perfect for transfers: it can be used to lift a mass or stretch a bungee cord, and to demonstrating Faraday’s Law. Dimensions (L): 170mm. generate an electrical current when the mass falls again or the bungee cord is released. It can also be turned by hand to generate a current. The motor/generator (6-9 V) is mounted on a robust metal base, and the gearing of the unit and the sizes of the pulleys have been chosen to enable a variety of qualitative and quantitative experiments to be undertaken. HE72390 £13.04 ea Demonstration Dynamo, DC EN101562 £62.44 ea This demonstration model facilitates the understanding of how a Motor/Dynamo dynamo works, thanks to the open and exposed design. A mounted armature, comprising two coils of copper wire, is rotated about a This apparatus is a great way to show how electrical energy is lost horizontal axis by turning the hand cranked drive wheel within a when converted to mechanical energy and back again - from a motor magnetic field, created by the permanent U-magnet supplied with the to a generator. Two identical motors, mounted on a moulded base, unit. Mounted on a plastic base with LED and two 4 mm sockets for have their shafts joined by means of a flexible coupling and both are connection to measuring instruments. Drive Wheel Dimemsions (Dia.): connected to 4 mm sockets mounted on the base. By applying 1.5 - 140 mm. Base Dimensions (W x L): 150 x 200 mm. 4.5 V DC to one motor, electrical energy is converted into mechanical energy and then back to electrical energy by the other motor, which acts as a dynamo. The voltages can be compared by using bulbs, meters or multimeters connected to each of the pairs of sockets. EN101558 £54.94 ea EN130510 £39.94 ea SPARES & ACCESSORIES £2.64 ea EN151558 Spare belt timstar.com 447 [email protected] +44 (0) 3333 442 443

PHYSICS Electrostatics Electromagnetic Induction continued Dynamo Universal Motor Generator A cycle dynamo with a trouble free drive system supported on an acrylic base. The dynamo output is available at two 4mm sockets for A 0-12 V DC motor that can also act as a generator. The shaft has a connection to other equipment but a torch bulb is provided to directly locking nut for clamping stroboscope discs, flywheels etc. It also has demonstrate the production of electricity and light from movement. Max a pulley wheel to drive or be driven by a rubber band. Speed 0-4800 output 3W at 6V a.c. Dimensions (L x W x H): 200 x 100 x 110mm. rpm. HE72380 £69.94 ea HE53780 £39.94 ea Lenz’S Law Demonstration Of Magnetic Braking DC Generator/Motor Model Kit Demonstration of magnetic braking. When This generator/motor model kit, from Frederiksen, demonstrates the a strong magnet rolls down the aluminium basics of a DC or single phase AC generator, and also functions as a U-profile, the changing magnetic field will DC motor. The model includes all the individual parts combined into induce an eddy current in the U-profile. one set, although replacement parts are available separately. This high According to Lenz’s law, this current will quality model provides an open design, allowing students to easily generate a new magnetic field opposing the see and understand the workings of a motor and a generator, as well changes in the original field. The motion will as allowing for further investigations and experimentation. Requires be slowed down dramatically. Delivered with self-assembly. The kit includes the following parts: Coil holder with two neodymium magnets and two non- commutator; Coil with 400 turns (windings); Laminated iron core; magnetic dummies of stainless steel. Contact springs x2; Profile track; Sliding saddles x4; Magnet supports x2; AlNiCo bar magnets; Manual drive pulley; Drive belts set. For MA154000 £49.94 ea further experimentation, coils with different numbers of turns are available separately (see below). Eddy Current/Lenz’s Law Kit This kit consists of two tubes (one copper, one plastic) and two discs (a supermagnet and an aluminium disc of a similar size). When the supermagnet is dropped down the copper tube, it falls much more slowly than might be expected. The other tube/disc combinations do not show this effect, since eddy currents are only produced using the copper tube and the supermagnet. Tube Dimensions (L): 250mm. EN140100 £393.75 kit MA104000 £16.81 kit SPARES & ACCESSORIES £26.19 ea EN140105 Coil, 200 turns £26.19 ea Eddy Current Kit EN140110 Coil, 400 turns £26.81 ea EN140115 Coil, 800 turns £26.81 ea For demonstrating Lenz’s Law. Containing a copper tube, two identical EN140120 Coil, 1600 turns test plugs - one steel and one neodymium magnet. Complete with instructions. ... with its open OUR EXPERT SAYS... design the DC Generator/Motor Model Kit is a high quality model, allowing students to easily explore its workings for further experimentation and investigation. MA10190 £14.94 kit 448 More products and offers available on our website!