AVA Chemicals [P] Ltd. Manufactures Zinc Sulphate Heptahydrate. AVA Chemicals [P] Ltd. Is an ISO 9001:2000 certified company. Zinc Sulphate Heptahydrate has the appearence of the White Crystals. It is a clear & colourless chemical, completely soluble in distilled water. The zinc content in this chemical is 22 % [±1%] and Ph of a 5% solution of Zinc Sulphate Heptahydrate is 4.6 - 4.8. The iron content in this chemical is less than 10 ppm, while lead content is less than 10 ppm and the copper content is less than 5 ppm.
