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