| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White crystalline powder | Conforms |
| Loss on drying | ≤1.0% | 0.15% |
| Residue on ignition | ≤0.1% | 0.04% |
| Heavy metals | ≤20ppm | 2ppm |
| Related substances | ≤1.0% | 0.28% |
| Isomer | ≤0.5% | 0.05% |
| Assay(HPLC) | 98.5%~101.0% | 99.18% |
| PH | 1.2~2.0 | 1.6 |
| Conclusion: The Product Conforms to Enterprise Standard. |
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