Specifications	FOOG GRADE	TECH GRADE
Main content % ≥	85.0	85.0
Chloride, as Cl % ≤	0.0005	0.005
SO4  % ≤	0.005	0.05
Fe % ≤	0.002	0.01
Arsenic, as As % ≤	0.0001	0.05
Heavy metals, as Pb % ≤	0.001	0.01
Easy Oxidized Matter, as H3PO3  %	0.012
Fluoride, as F % ≤	0.001