AVA Chemicals [P] Ltd. Offers Zinc Sulphate Monohydrate. AVA Chemicals [P] Ltd. Is an ISO 9001:2000 certified company. Zinc Sulphate Monohydrate is White colored Fine Powder type chemical. It is 90% [±1%] pure. It possesses Less than 0.15% Insoluability. The mesh size of the product is 100 to 150 mesh. Ph of a 1% Solution of Zinc Sulphate Monohydrate is 3.0 to 3.5. Zinc Sulphate Monohydrate possesses 32 % to 33 % Zinc Content, maximum 0.5 % Iron Contents and maximum 0.1% Copper Contents.