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

This Mole Set contains samples of four different metals and helps students to visualise mole of substance in solid state, as well as developing better understanding of the concept of the mole, mass, molar mass, along with the differing properties of the various metals. The set contains four element specimens: copper, iron, zinc and aluminium, each containing approximately one mole (6.023 1023 atoms) of the element. Comparison of each sample, side-by-side, clearly shows that the same molar amount of different elements have different masses and occupy different volumes, due to each element having different atomic mass and density.

Plastic bottles, air-tight with gromit to stop pH electrodes from drying out.

Earthenware.

Earthenware.

Glass with base and ground top flange.

Glass with base and ground top flange.

Glass with base and ground top flange.

Glass with base and ground top flange.

Glass with base and ground top flange.

Ground one side. Supplied in packs of 5.

Ground one side. Supplied in packs of 5.

Graduated 50 x 0.1ml. Closed at one end.

Circular pneumatic trough, made from clear soda-lime glass.

Circular pneumatic trough, made from clear soda-lime glass.

Circular pneumatic trough, made from clear soda-lime glass.

The head is fitted with 8 mm diameter inlet and outlet tubes.

Holder for glass gas syringes.

Ground glass syringe. Marked with 20 mL major graduations, and 1 mL minor graduations. Suba-Seal Stoppers ST14710 or ST14715 can be used as resealable stoppers. For video demonstration, visit timstar.co/SubaSealSyringe

Luer fitting, interchangeable pistons and barrels.

Luer fitting, interchangeable pistons and barrels.

Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Eight types available. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. ** please note these are not suitable for use at higher temperatures as this will distort the polypropylene.

Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Eight types available. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. ** please note these are not suitable for use at higher temperatures as this will distort the polypropylene.

Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Eight types available. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. ** please note these are not suitable for use at higher temperatures as this will distort the polypropylene.

Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. please note these are not suitable for use at higher temperatures as this will distort the polypropylene.

Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. please note these are not suitable for use at higher temperatures as this will distort the polypropylene.

Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. please note these are not suitable for use at higher temperatures as this will distort the polypropylene.

Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. please note these are not suitable for use at higher temperatures as this will distort the polypropylene.

Pre-bent rigid polypropylene delivery tubes. Unbreakable in normal use ideal substitutes for fragile glass alternatives. Suitable for many types of gas collection experiments. Supplied in pack of 5. The tubes have an i.d. of 4 mm, and an o.d. of 6 mm. please note these are not suitable for use at higher temperatures as this will distort the polypropylene.

Borosilicate glass, 6 mm o.d.

Borosilicate glass, 6 mm o.d.

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.

Introduce chromatographic separation to your class and show them how dyes of different colours separate on the basis of their size and shape. Columns may be rinsed and reused. Kit includes: instructions, sample mixture, chromatography columns, dry matrix, elution buffer, transfer pipettes, microtest tubes. All you need: 50 or 100 mL beakers, 25m mL beaker or test tube, ring stands with clamps, distilled water. For 10 Separations. Packing Column 20 min., Column Separation 40 min.

This experiment introduces chromatographic theory and methods of thin layer chromatography. A mixture of dyes are separated on cellulose-based TLC plate using two different solvent systems. Kit includes: instructions, samples, reagents and solvents, 10x20 cm cellulose thin layer plate (to be cut into eight 5x5 cm squares), 5 µL glass capillary pipets. All you need: 250 mL beakers, metric rulers, pipet pump, or 10 mL pipets, distilled water. For 8 Separations. Spotting Plates 20 min., TLC Separation 5 min.

Most molecules have net charge within pH range of 2 to 10. When the pH is altered, the net charge on molecules can change drastically. In this experiment, mixture of two chemicals is absorbed onto solid support ion-exchange column and separated during elution under conditions that influence their net charge. Kit includes: instructions, ion exchanger, chemical mixture, potassium acetate buffer, chromatography columns. • All you need: spectrophotometer cuvettes, ring stands and clamps, test tubes, lab glassware, distilled water, ml pipets and pumps. For 6 Separations. Requires 60-90 min.

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.