Photometer Jollys
Block comprising of two pieces of polythene approx. 25 mm square, 100 mm thick, separated by tin foil, on wood stand behind aperture 12 mm diameter.
Science Lab Equipment Manufacturer
Block comprising of two pieces of polythene approx. 25 mm square, 100 mm thick, separated by tin foil, on wood stand behind aperture 12 mm diameter.
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