| Item | Specification | Results |
| Appearance | Almost white powder | white powder |
| Assay | ≥98.0% | 98.52% |
| Loss on drying | ≤0.50% | 0.35% |
| Ammonium(NH4) | ≤0.02% | Pass |
| Sulfate | ≤0.02% | Pass |
| Arsenic | ≤2ppm | Pass |
| Heavy metal | ≤20ppm | Pass |
| Pathogen | Bacteria: ≤300cfu/g Fungus: ≤100cfu/g |
﹤20 |
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