| 外观 | white or yellowish granular or powder |
| Viscosity (1% solution) | 300 – 500 mpa.s |
| Assay(on dry basis) | 98.0% min |
| Loss on drying(105oC, 2hr) | 15% max |
| PH | 6.0 – 7.5 |
| Heavy metals(as Pb) | 0.004% max |
| Lead(Pb) | 0.001% max |
| Arsenic(As) | 0.0003% max |
| Ash | 18 – 24% |
| Particle size | 40 mesh: 100% pass |
| 菌落总数 | 2000/g max |
| Yeasts and moulds | 100/g max |
| Pathogens germs | absence |
| S. aureus | 阴性 |
| Pseudomonas aeruginosa | 阴性 |
| Salmonella sp. | 阴性 |
| C. perfringens | 阴性 |
Sodium alginate
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