Chemistry
Mole Set
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.
173.12 AED
pH Electrode Storage Bottle 12 mm
Plastic bottles, air-tight with gromit to stop pH electrodes from drying out.
81.40 AED
Pneumatic Trough, Glass, 200 x 100 mm
Circular pneumatic trough, made from clear soda-lime glass.
194.86 AED
Pneumatic Trough, Glass, 250 x 130 mm
Circular pneumatic trough, made from clear soda-lime glass.
259.28 AED
Pneumatic Trough, Glass, 300 x 130 mm
Circular pneumatic trough, made from clear soda-lime glass.
280.63 AED
Gas Washing Bottle, Dreschel
The head is fitted with 8 mm diameter inlet and outlet tubes.
142.29 AED
Gas Syringe, 100 mL
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
223.71 AED
Principles of Gel Filtration Chromatography Kit
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.
770.74 AED
Principles of Thin Layer Chromatography Kit
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.
770.74 AED
Ion Exchange Chromatography Kit
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.
833.98 AED
Chromatography Column, Pyrex
With 'Rotaflo' stopcock and porosity 'O' sintered disc. Stopcock bore 3 mm. Socket 19/26. Dimensions (L x Diameter): 300 x 20mm.
1075.08 AED
Chromatography Separation Ink
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.
22.92 AED
Parker Quink Ink, Black
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.
83.00 AED
Chromatography Sheets, Whatman Grade 1, 115 x 213 mm
Pattern 'CRL'. Eleven 3mm wide slots. Supplied as box of 100 sheets.
742.67 AED
Electrodes, Platinum, with Screw Terminals
Platinum electrodes, with screw terminals. Manufactured in borosilicate glass. Length from tip of foil to tip of terminal, 114 mm.
679.83 AED
Universal Electrode Holder
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
166.01 AED
S Shape 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.
54.54 AED
Electrodes, Round, Copper, 150 mm
These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.
37.15 AED
Electrodes Round, Nickel, 150 mm
These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.
86.56 AED
Electrodes Round, Aluminium, 150 mm
These round electrodes will fit the electrode holder EL110620, the electrode connector EL150426, and rubber stoppers with hole. Diameter 6-7 mm.
29.25 AED