Item	Limit	Result
Specific rotation[a]D20¡ã	0¡ã¡«+0.5¡ã	0¡ã
Chloride(Cl)	¡Ü0.020%	0.012%
Ammonium(NH4)	¡Ü0.02%	0.011%
Sulfate(SO4)	¡Ü0.020%	0.012%
Iron(Fe)	¡Ü15PPm	6PPm
Heavy metals(Pb)	¡Ü10PPm	5PPm
Arsenic(As2O3)	¡Ü1.5PPm	0.5PPm
Other amino acids	Conforms	Conforms
Loss on drying	¡Ü0.35%	0.23%
Residue on ignition	¡Ü0.20%	0.1%
(Sulfated)
Assay	98.5¡«100.5%	99.8 %
PH	5.5¡«6.5	6.0