... 5, 000 Metric Tons/ YearAppearance white or colorless crystalMesh Available 10, 8-16, 30, 40, 60, 80 meshPurity 99%, 80%, 70 ... % maxSulfate (SO4) 0.028% maxIron (Fe) 30 ppm maxHeavy Metals (Pb) 10 ppm maxArsenic (Aso3) 1 ppm maxOther Amino Acids conformsLoss On Drying 0 ...