(1)Purity (H3PO4):85% min
(2)Arsenic (As):Food Grade: 0.2 ppm max
(3)Technical Grade: 30 ppm max
(4)Heavy Metal (Pb):3 ppm max
(5)Sulphate (SO4):4 ppm max
(6)Chloride (Cl):3 ppm max
(7)Fluoride (F):5 ppm max
(8)Iron (Fe):2 ppm max
(9)H3PO3:20 ppm max
(10)Chroma:10 max