Appearance:hite or colorless crystal Assay:99% State of solution(transmittance):clear and colorless not Less than 98.0% Chloride (cl):1.0%max Ammonium(nh4):0.02%max Sulfate(so4):0.026%max Iron (fe) :300ppm max Heavy metals (pb) :10ppm max Arsenic (aso3):1ppm max Other amino acids conforms Microphyte:15000/g max Coliform 40/100g max Loss on drying:0.50%max Specific rotation (a)20:+24.7 í½+25.2 Ph:6.7í½7.2 Mesh size :20-30.40-60.60-80 , powder
