Test items	Specification
Assay(dry)	97.0-102.0%
Fineness	Residue on 60mesh≤1%, 200mesh≤30%
PH	5-7
Solute in water	≤0.24%
Conductance	≤75us/cm
Remains in aether	≤0.05%
Loss on drying	≤7.0%
Residue on ignition	≤0.05%
Heavy metals	≤10ppm
Organic volatile impurities	Conform
Bioburden	Conform