Chemistry

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

This Melting Point Apparatus has been designed with safety in mind. A single control knob on the front panel incorporates the mains ON/OFF switch with arbitrary scale of 0 to 10. A rapid heat switch allows higher temperatures to be obtained quickly. Sample tubes are illuminated from behind and magnified through a lens. A selector at the rear of the instrument allows a light or dark background. Ceramic insulation around the aluminium heating block minimises heat transfer to the casing.

The 8000 pH meter features an easy to read, LCD display and is supplied with a budget pH electrode. The 8000 pH meter indicates pH over the range of 0 to 14 pH with a resolution of 0.01 pH and an accuracy of ±0.05 pH. The pH readings are manually temperature compensated over the range of 0 to 60 °C (default 25 °C). The unit will power off automatically after ten minutes, maximising battery life. At the touch of a button, the instrument will automatically re-calibrate itself when used in conjunction with pH buffer solutions. Features: •Easy to use re-calibration feature •±0.05 pH accuracy •2 year guarantee on meter, 6 months on electrode •Operating Temperature 0ºC to 50ºC

Budget pH electrode. •Ideal for pH measurement of liquids and semi-solids •Ideal for laboratory applications •Ø12 x 120 mm •Temperature operating range 0 to 60°C

The MP-100 measures the melting point of chemicals from ambient to 250°C. Samples need to be placed in a sealed end capillary tube and located in the heating block. Up to three tubes can be tested at one time. The heating rate can be adjusted manually between 1 to 20°C/min, and for rapid heating 10°C/min, to obtain an accurate melting point range. The sample and melt process can be viewed via the magnifying lens, which is illuminated by bright LEDs. Record the melt temperatures from the thermometer, positioned horizontal to the samples to allow simultaneous viewing. The lens can be detached for cleaning and simple to follow instructions are printed directly on to the unit, making it easy for students to use. For 220/240V. Dimensions (L x W x H): 370 x 140 x 110 mm.

Spare thermometer, spirit filled, to 250 °C.

Designed with safety and ease of operation in mind making it ideal for use in education. Two samples can be tested simultaneously. Built-in illumination and viewing magnifying lens give clear viewing of samples. •Temperature range: Ambient to 300°C. •Three digit LED display. •Range rates: 20°C/min to plateau and 2°C/min to melt. •For 220/240V. •Dimensions (L x W x H): 160 x 220 x 170 mm.

A glass apparatus with side tube to allow stirring by convection of heating liquid. Dimensions: 182 x 84 mm. I.D. 16 mm.

Designed with safety and ease of operation in mind making it ideal for use in education. Two samples can be tested simultaneously. Built-in illumination and viewing magnifying lens give clear viewing of samples. Temperature range: Ambient to 300°C. Three digit LED display. Resolution is to 0.1°C and temperature to melt is variable from 1-10°C. For 220/240 V. Dimensions (L x W x H): 160 x 220 x 170mm.

An aluminium block with an angled hole drilled to accept thermometer (not included). Dimensions (Diameter x H): 65 x 50 mm.

Soda Glass. Outside diameter 1.8-2.0 mm. Wall thickness 0.28-0.32 mm. In packs of 100.

Soda Glass. Outside diameter 1.8-2.0 mm. Wall thickness 0.28-0.32 mm. In packs of 100.

These new atomic structure kits from Bright of Sweden are an award-winning, hands-on teaching aid for students. The unique models, based on Bohr's atomic model, allow students to make their own atoms, isotopes and ions and give them great hands-on experience of the structure of atoms. Each kit includes: Box with lid; electron shells on the lid and at the underside of the box; 30 protons; 30 neutrons; 30 electrons; smart storing of subatomic particles inside the box.

The complete package! This whole class set contains one Atomic structure Demonstration kit and eight Atomic Structure Student Kits, along with lesson plan/working sheet which has been developed together with science teachers; use it for studying activities, for tips and guidance or as tests for the students.

Student version spare particles, consisting of 30 protons, 30 electrons and 30 neutrons.

With 'Rotaflo' stopcock and porosity 'O' sintered disc. Stopcock bore 3 mm. Socket 19/26. Dimensions (L x Diameter): 300 x 20mm.

A mixture of cyan, magenta and yellow inks which appears black when combined but separates out into bright constituent colours when spotted on chromatography card and separated using solvent, (water) or by electrophoresis. Provides sufficient for approximately 500 ink spots.

An ink which uses isopropyl alcohol, instead of water, as solvent, so it dries by absorption instead of evaporation. When paper with Quink becomes wet, the ink will run into its separate components. The bottles have low centre of gravity to reduce the risk of tipping over. Supplied in 57 mL bottle.

Scarlet chromatography ink

Green chromatography ink

Blue/Black chromatography ink

Supplied as box of 100 sheets.

Supplied as box of 100 sheets.

Pattern 'CRL'. Eleven 3mm wide slots. Supplied as box of 100 sheets.

Supplied in reel, 100 m long.

Supplied in reel, 100 m long.

Supplied in reel, 100 m long.

Supplied in reel, 100 m long.

Supplied in reel, 100 m long.

Supplied in reel, 100 m long.

Supplied in reel, 100 m long.

Dimensions (W x D x H): 230 x 90 x 230 mm.

To fit CH04012.

Pair of rods.

Carbon rods, 100 x 5 mm. Pack of 10 rods.

Carbon rods, 200 x 8 mm. Pair of rods.

Platinum electrodes, with screw terminals. Manufactured in borosilicate glass. Length from tip of foil to tip of terminal, 114 mm.

These versatile electrode holders are suitable for holding Carbon rod electrodes as well as metal strip electrodes. They are designed to fit over 100 mL and 250 mL glass beakers, being held in place by small plastic lugs to prevent them slipping off. Resistant to corrosion, they accept 6 - 8 mm diameter cylindrical (e.g. carbon) electrodes and 19mm wide, 0.8 mm (minimum) thick metal strip electrodes. The brass connectors also resist corrosion and are compatible with the usual 4 mm stackable type lab leads. To tighten the carbon electrodes without crushing them, the setscrew is equipped with stop. • 4 mm sockets • Dimensions (L x W x H): 100 x 40 x 15 mm • Complete with 2 carbon electrodes

These 'S' shaped electrodes are convenient and easy to use simply hang them over the rim of the beaker containing the electrolyte and connect crocodile clips with 4 mm leads to them! Made from insulated brass, with a short length of carbon rod attached at the lower end and bare contact at the top for attaching crocodile clip. Supplied as a pair of electrodes.

These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.

These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.

These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.

These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.

These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.

These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.

These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.

Dimensions: 100 x 10 mm. Sold in packs of 10.

Each cell consists of 75 x 25 mm glass cylinder with 2 hole rubber stopper fitted with carbon electrodes. Electrical contact is made through the crocodile clips and a piece of insulating material between the electrodes prevents short circuiting. The gases evolved are collected in two 75 x 10 mm test tubes suspended over the electrodes by piece of wood and rubber bands (not supplied).

Spare glass tube for EL06891.

Spare carbon electrodes for EL06891.