Items Standard Appearance Colorless or white crystal Identification Complies with the limit Test Clarity & Colour of Solution Pass test Purity 99.5~101.0% Moisture 1.0% Sulphated Ash 0.05% Sulphate 150ppm Oxalic acid 100ppm Heavy Metals 5ppm Readily Carbonisable Substance Pass test Bacterial Endotoxin 0.5IU/mg Aluminium 0.2ppm Lead 0.5ppm Arsenic 1ppm Mercury 1ppm
