Assay (dry basis) : 97.0-102.0% Loss on drying: 6.5-10% Chloride: 0.07% max Sulfate: 0.1% max Ferric iron: 2.0% max Heavy metals:10 ppm max Arsenic (as as): 3 ppm max Lead: 2 ppm max Mercury: 3 ppm max Oxalic acid: pass test Reducing sugars: ass test 25kgs/bag or drum