| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | Yellow powder | Conforms |
| Solubility | Soluble in water, ethanol and acetone, insoluble in chloroform or ether. | Conform |
| Odor | Practically odorless | Conform |
| Taste | Neutral/slight astringent taste | Conform |
| Loss on drying | ≤9.0% | 8.06% |
| Insoluble in water | ≤0.50% | 0.027% |
| Total color | ≤2.0% | 1.5% |
| Tannic Acid content (Dry basis) |
≥81.0% | 81.35% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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