Copper sulfate feed grade Purity: 98% min Cu: 25% min Pb: 20ppm max Fe: 0.1% max Ni: 20ppm max Cd: 10ppm max As: 10ppm max Hg: 0.1 ppm max Water insoluble: 0.05% max Copper sulfate industrial grade Purity: 98% min Pb: 0.008% max Fe: 0.05% max Co:0.001% max Ca:0.048% max Ni: 0.05%max Zn: 0.05% max As: 0.001max Hg: 0.1 ppm max Chloride:0.013% max Ph:3.5-4.5 Water insoluble: 0.05% max. Packing: 25kg in plastic woven bags with plastic lining, 25mt/20fcl.