Industrial Grade Total phosphates (as P2 O 5 )% ≥ 68 Inactive Phosphates (as P2 O 5 )% ≥ 7.5 Iron (Fe) % ≤ 0.05 PH Value 5.8-6.5 Solubility pass Water Insoluble matter % ≤ 0.05 Polymerization 9-21 Fineness (mesh) 60~80 Food Grade Total phosphates (as P2 O 5 )% ≥ 68 Inactive Phosphates (as P2 O 5 )% ≥ 7.5 Iron (Fe) % ≤ 0.05 PH Value 5.8-6.5 Solubility pass Heavy Metals (as Pb) % ≤ 0.001 Arsenic (As)% ≤ 0.0003 Fluoride (as F) % ≤ 0.003 Water Insoluble matter % ≤ 0.06 Polymerization 9-21 Fineness (mesh) 60~80 You are welcome to send me your inquiry