| Product Specifications | |
| Item | Index |
| Appearance | yellow powder |
| Moisture% | ≤6.0 |
| Total nitrogen% | ≥8.0 |
| Amino nitrogen% | ≥2.0 |
| GSH% | ≥15.0 |
| PH(2% aqueous solution) | 4.5-6.5 |
| Pb,mg/kg | ≤0.5 |
| As,mg/kg | ≤0.5 |
| Total colony,cfu/g | ≤10000 |
| Coliforms,MPN/g | ≤0.3 |
| Pathogenic bacteria,/25g | Negative |