| TESTS | SPECIFICATION | RESULTS |
| Appearance | White or yellowish-white powder | Conform |
| Identification test | Meets ID Tests | Pass |
| K Value | 15~19 | 17.13 |
| Moisture | ≤5.0% | 3.34% |
| Ph Value (5% in water) | 3~7 | 3.86 |
| N-Vinylpyrrolidone | ≤0.1% | 0.01% |
| Residue on ignition | ≤0.1% | 0.042% |
| Nitrogen | 11.5~12.8 | 12.05 |
| Heavy metals(Pb) | ≤10ppm | ＜10ppm |
| Acetaldehyde | ≤0.05% | ＜0.05% |
| Hydrazine | ≤1ppm | ＜1ppm |
| Conclusion: The Product Conforms to USP. |
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