| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White crystalline powder | Meets the requirements |
| Identification | To pass test | Passes test |
| Water | ≤11.6% | 8.5% |
| Sulfate | ≤0.05% | 0.02% |
| Chloride | ≤0.05% | 0.03% |
| Arsenic | ≤3ppm | 0.8ppm |
| PH | 5.5~7.5 | 5.7 |
| Lead | ≤10ppm | ＜10ppm |
| Cadmium | ≤5ppm | ＜5ppm |
| Reducing substances | ≤1.0% | 0.10% |
| Organic volatile impurities | Meets requirements | Meets requirements |
| Assay | 97.0%~102.0% | 99.7% |
| Zinc (as dihydrate) | 12.90%~13.56% | 13.26% |
| Particle size | Through 60 mesh | 90% |
| Conclusion: The Product Conforms to USP/FCC. |
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