| ITEM | SPECIFICATION | RESULT |
| Description | Dark brown crystal granule | Conforms |
| Content | ≥99.5% | 99.5-100.5% |
| Loss on Drying | ≤1% | 0.6% |
| Cl & Br content | ≤0.01% | 0.002% |
| Ferrum | ≤10ppm | ≤10ppm |
| Sulfate | Conforms | Conforms |
| Heavy metal | ≤10ppm | ≤10ppm |
| Conclusion | The product meet the testing requirements | |
| RFQ |