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500g, Blue Stone, Indicating Drierite, 4 Mesh
DescriptionQuantity: 500g (1 lbs.)
Coloured blue. A special anhydrous calcium sulfate used as a dehydrating agent in carbon analysis, or as an all purpose desiccant for drying solids, liquids and gases. It can be regenerated repeatedly by heating to 225°C. Colour changes to rose-red indicating when regeneration is necessary.