| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White crystalline powder | Conforms |
| Transmittance | ≥98.0% | 98.6% |
| Ammonium | ≤0.20% | <0.20% |
| Sulfate | ≤0.02% | <0.02% |
| Iron | ≤10ppm | <10ppm |
| Heavy metals | ≤10ppm | <10ppm |
| Arsenic | ≤1ppm | <1ppm |
| Loss on drying | ≤0.20% | 0.12% |
| Residue on ignition | ≤0.10% | 0.06% |
| Assay | 99.0%~101.0% | 99.42% |
| Conclusion: The Product Conforms to AJI/USP. |
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