... 4,Use for Agriculture Grade 1,Product name Zinc Sulphate Hepta2,Purity Zn 22% min3,Appearance white powder4,Use ... for Agriculture GradeSpecificationsZinc Sulphate HeptaZn 22% minPb 0.002% maxAs 0.002% ... ,Chrome Acid,Magnesium Sulphate,Sodium Metabisulphate,Kieserite,Magnesium Carbonate Light,Magnesium Oxide Light,Sulfamic Acid,Calcium Nitrate,Magnesium Nitrate, ...