| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White or almost white powder | Conforms |
| Identification | Meet the requirement | Conforms |
| PH | 5.6~7.2 | 6.8 |
| Loss on drying | ≤5.0% | 3.2% |
| Residue on ignition | ≤0.2% | 0.02% |
| Heavy metals | ≤0.002% | 0.0001% |
| Ca | 3.5%~4.5% | 3.9% |
| Assay | ≥98.5% | 99.62% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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