Items Standard Analysis data
Appearance White crystals or crystalline powder conforms
Transmittance Not less than 98.0% 98.1%
Chloride (Cl) Not more than 0.020% conforms
Heavy Metals (Pb) Not more than 10PPM conforms
Arsenic(As2O3) Not more than 1PPM conforms
Other amino acids Not detected conforms
Loss on Drying Not more than 0.20% 0.18%
Residue on Ignition (Sulfated) Not more than 0.10% 0.06%
Assay 98.0%~101.0% 99.2%
PH 5.0~6.0 5.3