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COPPER VOLTAMETER (0853)
For experiments in electrochemistry. Consists of a plastic container with an insulated bakelite top lid having 3 rectangular copper electrodes mounted underneath. The middle copper electrode is removable and serves as cathode, while the other two copper electrodes serves as anode. The electrodes connected to terminals present on top of the bake lite lid for electrical connection.
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HOFFMANN'S VOLTAMETER (0854)
Ideal for studying the electrolysis in which gaseous components are formed or gases are liberated at the electrodes. Demonstrates the composition of water by volume, and useful in determination of the electro-chemical equivalent of hydrogen. The apparatus consists of 'H' shaped glass tube having two connected eudiometers at its ends, graduated 50x0.2mL. A central bulb shaped reservoir is connected to the tube joining the two eudiometers. The eudiometer tubes provided with stop cock at the top and are open at the bottom to take suitable electrodes mounted in rubber bung. Complete made of borosilicate glass.
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ACCESSORIES AND SPARES FOR HOFFMANN'S VOLTAMETER - Stand for Hoffmann's Voltameter (0855)
Stable base with vertical metal rod and clamping arrangement to securely mount the Hoffmann's voltameter. by supporting the cross-limb and all the three vertical arms.
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ACCESSORIES AND SPARES FOR HOFFMANN'S VOLTAMETER - Carbon Electrodes, Simple (0856)
Carbon electrodes mounted in rubber bung with connecting wires with protective test tube housing and simple plastic connector. Useful for electrolysis of ammonia solutions or hydrochloric acid or any other chloride containing solution. Supplied in pair.
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ACCESSORIES AND SPARES FOR HOFFMANN'S VOLTAMETER - Carbon Electrodes, Superior (0857)
Similar to CARBON ELECTRODES SIMPLE but superior quality carbon electrode mounted in extra soft rubber bung with brass connecting terminal. Supplied in pair.
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ACCESSORIES AND SPARES FOR HOFFMANN'S VOLTAMETER - Platinum Electrodes, Simple (0858)
Highly inert platinum electrodes fused in glass tube and mounted in rubber bung with connecting wires and protective test tube housing. Useful for electrolysis of acidified water. Supplied in pair.
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ACCESSORIES AND SPARES FOR HOFFMANN'S VOLTAMETER - Platinum Electrodes, Superior (0859)
Similar to PLATINUM ELECTRODES SIMPLE but bigger platinum electrode mounted in extra soft rubber bung with brass connecting terminal. Supplied in pair.
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ELECTRODES, SILVER FOIL (0860)
For use as electrode in electrochemistry. Foil thickness about 0.06mm, length 50mm and width 30mm. Pack often foils.
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ELECTRODES, CARBON (0861)
Comprises carbon electrodes mounted in holed rubber stopper. Can be used in beaker or boiling tube or with ELECTROLYSIS APPRATUS. Supplied in pair. Approximate dimensions: 200x5mm (length x diameter)
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GASTUBE, GRADUATED (0862)
Made of neutral glass, sealed at one end for collection and measurement of gases, capacity 50 x 0.2mL.
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SALT BRIDGE (0863)
For use in experiments involving the measurement of cell EMF under conditions of forward, zero, and reverse current flow. The bridge comprises an inverted 'U' tube with its ends closed by sintered discs. This apparatus provides a more effective method .of making reversible cells than the wet filter paper or agar gel methods. Arm diameter 13mm, width 8cm and overall height 10cm.
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'U' TUBE (0864)
For the visual observation of the migration of coloured ions. Comprises central loading tube with funnel attached to a 'U' tube and two carbon electrodes mounted in holed rubber bungs closing the mouth of the U-tube. approximate sizes - 19.5cm height and 6.5cm width.
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CHART, PERIODIC TABLE OF ELEMENTS (0865)
Periodic Table of the Elements, Classroom sized 75 x 100cm. Printed on poly-art plastic sheet, multi-coloured, fitted with plastic roller. Showing 112 elements with pictures in multi-colour. Weather-proof. Washable and markable surface.
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CHART, pH COLOUR (0866)
Classroom sized 75 x 100cm. Printed on poly-art plastic sheet. Coloured fitted with plastic roller. Weather-proof. Washable and markable surface. Provides information of colours of pH papers from 1 to 14 in circular sectors as well as bar, clearly indicating.
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ATOM ACTIVITY MODEL (0867)
Useful for exploring and demonstration of atomic orbital structure to a group of students. This durable, and attractive transparent model of atom has been designed to permit its use on over-head projector. Comprises a clear, thick plastic round disc with small hemisphere at the center representing nucleus and circular orbits clearly marked on the disc to represent orbits. Colourful pieces clearly depict the location of subatomic particles in the atom and their arrangement. This activity reinforces concepts of atomic numbers, atomic mass, filling order of shells, electroneutrality and ionic charge.
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