0
| Appearance | Faint yellow to very dark yellow and yellow-brown powder. |
| Impurity | PASS |
| Total nitrogen (N) | ≥12.5% |
| Residue on ignition | ≤15.0% |
| Loss on drying | ≤5% |
| Amino nitrogen | ≥3.0% |
| Microbiological culture test | PASS |
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