Specifications	Industrial Grade	Food Grade
H3PO4 % ≥	85.0	85.0
Chloride (as Cl-) % ≤	0.0005	---
Sulphate (SO4-) % ≤	0.005	---
Iron (Fe) % ≤	0.002	---
Arsenic (as As) % ≤	0.005	0.00005
Heavy metals (as Pb) % ≤	0.001	0.0005
Oxidable (as H3PO3) % ≤	---	0.012
Fluoride (as F) % ≤	---	0.001
Colour ≤	30	20