| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White or almost white, crystalline powder or crystals | Conforms |
| Appearance of solution | Clear and colorless | Conforms |
| Identification | Positive | Positive |
| Water | 4.5%~5.5% | 5.0% |
| Heavy metals | ≤20ppm | 3ppm |
| Sulphated ash | ≤0.1% | 0.05% |
| Related substances | Any impurity: ≤0.5% | 0.02% |
| Sum of all impurities: ≤1.0% | 0.8% | |
| Assay | 99.0%~101.0% | 99.50% |
| Conclusion: The Product Conforms to BP//USP/EP. |
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