| Terms | Specifications | Result |
| Appearance | White crystalline powder, odorless | Pass |
| Assay | ≥ 98% | 99.5 % |
| Loss on drying | ≤ 1.5% | 0.13% |
| Residue on ignition | ≤ 0.05 % | 0.01% |
| PH | 5.0-6.7 | 6.2 |
| Color in solution (30% solution) | ≤ 0.100 | 0.005 |
| Turbidity (30% solution) | ≤ 0.05 | 0.012 |
| Optical rotation | ＋197°～＋201° | +199° |
| Pb | ≤ 0.1 mg/kg | 0.05 |
| As | ≤ 0.5 mg/kg | 0.04 |
| Cadmium | < 1 mg/kg | Negative |
| Mercury | < 0.1 mg/kg | Negative |
| Total number of colonies | ≤ 300 cfu/g | 100 cfu/g |
| Coliform | Negative | Negative |
| Mold and Yeast | ≤ 100 cfu/g | Negative |
| Judgement | Confirm to the requirements | |
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