Main centres: | 1-3 business days |
Regional areas: | 3-4 business days |
Remote areas: | 3-5 business days |
ITEM | STANDARD |
Appearance | White crystals or crystalline powder |
Assay (as NH4HCO3, %) | 99.0-100.5 |
Chlorides (as Cl, %) | 0.003 |
Sulfur compound (as SO4, %) | 0.007 |
Residue after evaporation (%) | 0.008 |
Specific optical rotation | +20.5 ~ +21.5 |
Lead | 3 mg/kg |
Arsenic | 2 mg/kg |
Total Heavy metal (as Pb) | 10 mg/kg |