| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White to slightly yellow crystalline powder | Conforms |
| PH value | 2.0~3.0 | 2.5 |
| Loss on drying | ≤1.0% | 0.13% |
| Residue in ignition | ≤0.1% | 0.05% |
| Assay | 99.0%~101.0% | 99.80% |
| Conclusion: The Product Conforms to USP/BP/EP. |
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