Timstar - Science

A remarkable self adhesive sheet material printed with thermochromic liquid crystal 'ink'. Changes colour (bright blue) when heated above 27°C. Potential applications are many and varied. e.g, temperature indication/warnings, body jewellery, advertising displays (attach resistance wire to the rear and pass a small current to cause dramatic colour changes to the front 'screen'. Note: Typical applications require only very small pieces e.g. 25 x 25 mm.

Far more than just starter kit, this comprehensive selection case contains a vast array of smart and unusual materials and is ideal for those required to give presentations or demonstrations about materials. The case includes smart materials book and some basic accessories for handling the materials. Case size: 46 x 33 x 15cm. Case contents • Thermally responsive: Thermochromic pigment; Thermofilm; Thermal paper (fax); Phase change powder. • Smart Alloys and Polymers: Shape memory polymer; Smart putty; Rare earth magnet; Superelastic wire; Memory wire; 2-way memory spring. • Optically Responsive Materials and LEDs: Glow-in-the-dark film; Optical fibre; UV fluid; UV beads; LEDs. • Fibres and Woven Materials: Silk Cocoons; Kevlar fabric; Carbon fibre fabric; Ripstop nylon; Silk; Lycra; Ecofilm; Genuine carbon fibre sheet. • Special Polymers: Polymorph; Hydrogel; Expancel; Chromatic Alginate. • 'Nano' Materials: QTC pills; Broken shells; Chameleon nano flakes; Smart film.

A 5 mm dia. x 12 mm (when closed) spring made from shape memory alloy (NiTi). At room temperature this spring is soft enough to pull out to approximately 50 mm by applying a small force. When heated to 70°C by passing an electric current through it, the spring contracts to its original length with useful pulling force (equivalent to lifting 0.5 kg weight).

This remarkable alloy melts at just 61°C but, unlike the most familiar low melting point alloys, does not contain lead or cadmium. It is a relatively hard and extremely tough alloy that has a wide variety of scientific and manufacturing applications. It is used for example to fill small tubes for bending without crushing, casting for models and jewellery, and for making precision moulds. Although relatively expensive because it contains the rare element indium, Field's metal makes a fantastic demonstration of how several constituents, each with much higher melting point, can be combined to produce fusible alloy. Note: indium has risen in price recently because of its use in LCD TV screens. It 'wets' and adheres to many surfaces hence the propensity of Field's metal to adhere to plastics. Approx. 10 g.

With no wheat, gluten or nut oil, this is the most widely used type of glue used to stick paper and card in schools. It dries to a clear finish and is washable.

Polypropylene adhesive tape which is strong yet easy to tear.

This tape is made of lightweight, translucent crepe paper that sticks easily on to walls, skirting, floors and ceilings to protect them from paint when decorating. The light adhesive can be easily pulled away from walls without leaving unsightly marks or damage.

Adhesive tape dispenser with dual core to take both standard and 25 mm core tapes. Non-slip rubber base, weighted to make one-handed use possible. • Non-slip rubber base • Weighted making one-handed use possible • Dual core takes standard and 25mm core tapes

These multi-function calculators are ideal for introducing basic maths operations to students. Key features include: dual power source: solar and battery (battery included), auto shut off, 8 digit LCD display, 3 key memory and four functions. Class Set contains: 30 Student Calculators and 1 Teacher (Desktop) Calculator in a foam insert inside a deep Gratnells Tray with lid. 30 Student Calculators (112 x 68 mm) + 1 Desktop Calculator (125 x 100 mm).

This multi-function calculator is ideal for introducing basic maths operations to students. Key features include: dual power source: solar and battery (battery included), auto shut off, 8 digit LCD display, 3 key memory and four functions. Size: 112 x 68 mm.

This strong, durable A4 clipboard provides hard, smooth, glazed surface, with an integral heavy duty clip. • Strong clip ensures papers are always secured • Glazed surface for smooth writing

Fine tipped permanent marker pens suitable for use on OHPs, CDs and many other surfaces.Tip size 0.6mm. Supplied in pack 10. • Medium tip ball point pens for quality writing • Designed to prevent ink leakage • Tungsten nib gives consistent quality • Ergonomic barrel is perfect for long use

26/6mm size full strip staples.

A box of assorted rubber bands.

This heavy duty hole punch is able to punch through up to 63 sheets of 80 gsm paper at time. The extended handle makes using the machine effortless. The punch includes an integrated guide to ensure punching is precise and accurate. • Heavy duty 2-hole punch for the easy punching of documents • Can punch up to 63 sheets of 80 gsm paper • Guidelines ensure that punching is always precise

Reams (500 sheets) of pre-punched A4 graph paper with 2:10:20 mm ruling (2 mm squares). •Ruling 2:10:20 mm squares •Punched with standard two-hole punching •Ruling colour: blue •Printed both sides •Paper weight 90 gsm •Paper size A4: 297 x 210 mm •Supplied in packs of 500

Exercise paper, A4, 8mm feint and margin, punched. Ream of 500 sheets.

Cost effective pack of medium size erasers. Box of 20, eraser dimensions 43 x 25 x 12mm.

Contains 28 red right handed and left handed red/blue ruler scissors making this an ideal classroom pack. Complete with sturdy rubber wood storage block.

For individual use. A4 size.

Mixed pack of colours for student use; Red, blue, black, green.

Whiteboard cleaner spray with special formula for removing stains, drywipe marker residue, grease etc. to help maintain the appearance of whiteboards. 250ml pump action bottle.

Iron wire with ceramic centre. Each pack has batch number, and UKAS asbestos certificate is available online. Supplied in packs of 10

Borosilicate glass, plain pattern, angled tip, short stem, filter funnel.

Borosilicate glass, plain pattern, angled tip, short stem, filter funnel.

A 6 W DC plug-top power supply. Supplied with interchangeable pins for UK, EU, US and Australian mains sockets, with full compliance with regulations in each of those countries. 9V, 0.67 A, 2.1 mm.

The FiveEasy F20 meter has a large, well-structured display, intuitive button arrangement and simple menu which ensures that measurements can be performed in just a few clicks. •Compact design saves space; Through its compact design and the ability to remove the sensor holder and store it on the side of the meter, little bench space is needed. •Simple and secure data transfer; The FiveEasy meter allows data to be exported either directly to a printer or a PC for further processing using RS232 or USB ports. •Range: pH 0.00 – 14.00 x 0.01 •Temperature range: 0 °C – 100 °C •3-point calibration •Supplied with a LM438 general pH sensor •Dimensions: 227 x 147 x 70 mm •Weight: 630 g •4.3” LCD display

Receiver adapter, plain with bend.

Storage Units 18 Tray

This two way bench mounted gas tap features drop levers in yellow, allowing you to quickly identify if any taps have been left in the 'on' position. The anti-rotation pin secures the tap from rotating on the surface underneath. An installation template is provided with each tap for a precise fit. The tap is British gas approved and comes with a 5 year warranty.

Fixed swan neck laboratory water tap with a removable nozzle. It has strengthened tubing, anti rotation pin and chemical resistant paintwork.

This laboratory tap has a movable swan neck with a fixed nozzle. It is made of solid brass with a Rilsan coating making it robust and durable. It can be configured for both hot or cold water usage. THE MOVABLE SWAN NECK TAP HAS A 1/2″ BSP MALE INLET.

Spare caps for 30 mL dropping bottles BO180040.

Spare caps for 60 & 125 mL dropping bottles BO03045 & 50.0

Cup Polystyrene With Lid

Gm Tube Test Source

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 x 2 mm thick and 10 x 1 mm thick (enamelled to protect from lead contamination. •Aluminium plates: 2 x 3 mm thick, 6 x 1 mm thick, and 4 x 0.5 mm thick.

This GM Tube & Holder has been designed to work directly with the IPC Timer Scaler & Frequency Meter but can also be used with any other suitable Scaler unit. The GM Tube contained within this stand-alone holder is the industry standard type: ZP1481, as recommended in the Cleapss document GL:138 (Choosing a Geiger Muller Tube). The ZP1481 has a large area detection window making it suitable for all practical demonstrations and investigations as well as having an efficiency level suitable for detecting alpha, beta and gamma radiation, it is also robust and has a long life. The holder containing the GM Tube not only provides both protection and a choice of connections to the Tube, but also the option to attach the holder to a retort stand using the supplied fixing rod. Also contained within the Holder is a high ohmic value (4M7) series resistor required by most Counter and Ratemeter (Scaler) units. If required the protection grill covering the detection window can be removed should you want to detect low levels of contamination. This model comes with a TNC plug.

This GM Tube & Holder has been designed to work directly with the IPC Timer Scaler & Frequency Meter but can also be used with any other suitable Scaler unit. The GM Tube contained within this stand-alone holder is the industry standard type: ZP1481, as recommended in the Cleapss document GL:138 (Choosing a Geiger Muller Tube). The ZP1481 has a large area detection window making it suitable for all practical demonstrations and investigations as well as having an efficiency level suitable for detecting alpha, beta and gamma radiation, it is also robust and has a long life. The holder containing the GM Tube not only provides both protection and a choice of connections to the Tube, but also the option to attach the holder to a retort stand using the supplied fixing rod. Also contained within the Holder is a high ohmic value (4M7) series resistor required by most Counter and Ratemeter (Scaler) units. If required the protection grill covering the detection window can be removed should you want to detect low levels of contamination. This model comes with a BNC plug.

Dry Ice Maker (Snowpack 30)

Kinetic Theory Model

Multifunction Laser.

Green Laser Pointer 532Nm

Diffraction Kit - 18 Slides •Six slides of 1 to 6 slits •Three gratings to match the slits •Diffraction grating 80 lines/mm •Diffraction grating 300 lines/mm •Single slit – Tapered •Double slit -Tapered •Metal gauze - 300 mesh •Circular apertures 1.0, 0.60, 1.40, 0.30 mm nominal diameter •Hologram •2 Polaroids

This laser emits an intense monochromatic red beam of wavelength 630 nm at 0.9 mW (Class II operation). Typical beam divergence is approximately 1 millirad. The laser is ideal for the demonstration of the behaviour of light in a visually effective way, reinforcing the practical work carried out by pupils using white light. It is an essential tool to develop basic understanding of the passage of light through different media, slits etc. The laser beam can be modulated by applying an external digital or analogue waveform to the 3.5 mm jack socket on the rear panel. Alternatively, the beam can be modulated by the internal generator which produces 0.1 µs pulses at approximately 1 MHz. This allows speed of light experiments to be easily performed. The passage of light through light guides and optical fibres can be demonstrated by filling a glass or plastic tube or U-tube with very dilute milk. The growth of laser-based communication systems and research into the use of lasers in computers of the future make this an essential piece of equipment to bring up-to-date relevance into teaching. The laser is powered by a 6LR61 (PP3) battery or external smoothed and regulated supply, has adjustable focus, no warm-up time and has a key operated safety switch. Housed in a robust anodised aluminium case. Supplied with key.

This gold leaf electroscope is great for hands on experience with electrostatic principles in physics classrooms and labs. The solidly constructed sheet anodized aluminium walls of the electroscope are mounted on a plastic base. The front glass window slides up to allow insertion of ionizing material in chamber. A transparent scale is attached inside chamber to measure the deflection of the gold leaf. Supplied with two gold leaf sheets. Fitted with 4 mm socket. Dimensions: 165 x 95 x 70 mm. Note: The gold-leaf does not come pre-attached to the electroscope. Instructions on how to properly attach the gold-leaf to the conducting rod are included with the product manual.

Use this Cobra SMARTsense Spirometer sensor to measure exhaled or inhaled volume and investigate the process of oxygen uptake. •Quick and easy connection via Bluetooth and the free measureAPP •Contains a USB-C rechargeable lithium polymer battery •Up to 50 hours use on one battery charge •Flow rate: oRange: ±10 l/s oResolution:0.01 l/s •Volume: oRange: ±15 l oResolution: 0.01 l •Sample rate: 200 Hz •Includes 1 mouthpiece

These cardboard mouthpieces can be placed on the Cobra SMARTsense Spirometer mouthpiece and come with built-in filter, optionally using the filter membranes included in the set, thus allowing multiple use of the filter mouthpieces. Contains: •10 cardboard mouthpieces •10 filter papers

General Purpose String 20G

RS232 for Scout balances.