Timstar - Science

Offering accuracy and repeatability in essential weighing applications in education settings, PR balances deliver competitive performance at an economical price. Constructed with an ABS top housing, removable stainless-steel pan, removable glass draftshield with sliding top door, integrated weigh-below-hook, security bracket and calibration lock. Featuring RS232 connectivity for easy communication, and a backlit display and a simple interface for uncomplicated operation, the PR is perfectly designed for your classroom. •Applications - Basic Weighing, Parts Counting, Percent Weighing •Display - Backlit Liquid Crystal Display (LCD) •Operation - AC adapter (included) •Communication - RS232 (one port included) •Design Features - User-selectable environmental filters and brightness settings, auto-tare, auto-dim, user-selectable span calibration points, software lockout and reset menu, user-selectable communication settings and data print options, user-definable project and user IDs, software overload/underload indicator, stability indicator.

Borosilicate 3.3 glass beakers, graduated, with spout. Resistant to heat, temperature changes, and chemicals, to ISO 3819.

Borosilicate glass, graduated, easy pour rim, wide-mouthed conical flask.

Borosilicate glass, graduated, narrow-mouthed, heavy duty conical flask.

RASOTHERM® Erlenmeyer flasks, narrow neck. Borosilicate glass 3.3 ISO 1773. With graduation. Resistant to heat, temperature changes and chemicals.

Borosilicate glass, graduated, easy pour rim, wide-mouthed conical flask.

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

Borosilicate glass, graduated, narrow-mouthed, heavy duty conical flask.

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

•Borosilicate 3.3 •ISO 4796-1 •Graduated •Polypropylene screw cap and pouring ring •Resistant to heat, temperature changes, and chemicals •Supplied in packs of 11

•Borosilicate 3.3 •ISO 4796-1 •Graduated •Polypropylene screw cap and pouring ring •Resistant to heat, temperature changes, and chemicals •Supplied in packs of 12

Borosilicate 3.3 glass beakers, graduated, with spout. Resistant to heat, temperature changes, and chemicals, to ISO 3819.

•Borosilicate 3.3 •ISO 4796-1 •Graduated •Polypropylene screw cap and pouring ring •Resistant to heat, temperature changes, and chemicals •Supplied in packs of 10

RASOTHERM® Erlenmeyer flasks, narrow neck. Borosilicate glass 3.3 ISO 1773. With graduation. Resistant to heat, temperature changes and chemicals.

RASOTHERM® Erlenmeyer flasks, narrow neck. Borosilicate glass 3.3 ISO 1773. With graduation. Resistant to heat, temperature changes and chemicals.

•Borosilicate 3.3 •ISO 4796-1 •Graduated •Polyproplyene screw cap and pouring ring •Resistant to heat, temperature changes, and chemicals •Supplied in packs of 13

Borosilicate glass, with stopcock and disc

This Compass CR balance provides basic weighing functionality and competitive performance at an economical price. Features such as a slim, stackable design, and an enlarged weighing platform, make the CR series perfect for a variety of portable weighing applications. •Display - Liquid Crystal Display (LCD) •Operation - 3 AA batteries (included) or AC adapter (not included) •Construction - ABS housing and pan, transportation lock, slip-resistant feet •Design Features - Stability indicator, mechanical and software overload/underload protection, auto shut-off.

Aluminium screw cap and rubber liner for McCartney bottles.

This Compass CR balance provides basic weighing functionality and competitive performance at an economical price. Features such as a slim, stackable design, and an enlarged weighing platform, make the CR series perfect for a variety of portable weighing applications. •Display - Liquid Crystal Display (LCD) •Operation - 3 AA batteries (included) or AC adapter (not included) •Construction - ABS housing and pan, transportation lock, slip-resistant feet •Design Features - Stability indicator, mechanical and software overload/underload protection, auto shut-off.

Glass with vinyl teat, plastic interchangeable stopper and glass pipette. Supplied in packs of 10.

Recommended by CLEAPSS' guide GL240, a high-quality burner with refillable gas tank and thumb-operated electric ignition. It provides stable, controllable flame. The housing stays cool enough to touch even after sustained use. • Heavy base design for stability • Easy to refill • Electric instant ignition system • Built-in safety pressure release valve • 35 minutes large flame on full tank • 70 minutes small flame on full tank • Can be refilled with GA130510 • Rekrow model RK4601 • Flame temperature up to 1,250 °C • Output 0.75 kW • 30 g tank capacity • Consumption: 56 g/hour • Base diameter: 79 mm • Width: 127 mm • Height: 75 mm • Weight: 410 g (without fuel) • CE marked

Recommended by CLEAPSS' guide GL240, a high-quality burner with refillable gas tank and thumb-operated electric ignition. It provides stable, controllable flame. The housing stays cool enough to touch even after sustained use. • Heavy base design for stability • Easy to refill • Electric instant ignition system • Built-in safety pressure release valve • 35 minutes large flame on full tank • 70 minutes small flame on full tank • Can be refilled with GA130510 • Rekrow model RK4601 • Flame temperature up to 1,250 °C • Output 0.75 kW • 30 g tank capacity • Consumption: 56 g/hour • Base diameter: 79 mm • Width: 127 mm • Height: 75 mm • Weight: 410 g (without fuel) • CE marked

Recommended by CLEAPSS' guide GL240, a high-quality portable laboratory burner, with refillable gas tank and thumb-operated electric ignition. It provides an adjustable flame, similar to a Bunsen burner. The tank stays cool enough to touch even after sustained use. • Heavy base design for stability • Easy to refill • Electric instant ignition system • Built-in safety pressure release valve • 35 minutes large flame on full tank • 80 minutes small flame on full tank • Can be refilled with GA130510 • Flame temperature up to 1,250 °C • 30 g tank capacity • Width: 115 mm • Height: 96 mm • Weight: 430 g (without fuel)

Recommended by CLEAPSS' guide GL240, a high-quality portable laboratory burner, with refillable gas tank and thumb-operated electric ignition. It provides an adjustable flame, similar to a Bunsen burner. The tank stays cool enough to touch even after sustained use. • Heavy base design for stability • Easy to refill • Electric instant ignition system • Built-in safety pressure release valve • 35 minutes large flame on full tank • 80 minutes small flame on full tank • Can be refilled with GA130510 • Flame temperature up to 1,250 °C • 30 g tank capacity • Width: 115 mm • Height: 96 mm • Weight: 430 g (without fuel)

This safe, reliable power supply is lightweight and robust. It features short-circuit protection, overload protection with automatic reset, and thermal cut-out. Regulated DC with a simple rotating switch to select the voltage, as well as an on/off switch. Output is via colour-coded terminal sockets. The selectable output voltage wheel ranges from 3 V, 4.5 V, 6 V, 7.5 V, 9 V and 12 V. Conforms to CE:EN61010-2010

This safe, reliable power supply is lightweight and robust. It features short-circuit protection, overload protection with automatic reset, and thermal cut-out. Regulated DC with a simple rotating switch to select the voltage, as well as an on/off switch. Output is via colour-coded terminal sockets. The selectable output voltage wheel ranges from 3 V, 4.5 V, 6 V, 7.5 V, 9 V and 12 V. Conforms to CE:EN61010-2010

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