Calibre Chemicals Pvt. Ltd. Offers Potassium Iodide. Calibre Chemicals Pvt. Ltd. Is accredited with ISO 9001:2000 and HACCP certification. The Potassium Iodide is a white crystalline powder or colourless crystals. Uses of Potassium Iodide are: Reagent in analytical chemistry Feed additive Photographic emulsions In tyre cord in industry LCD production