Complaint
| Index | Technical grade | RESULTS |
| Assay,% ≤ | 98.0-102.0% | 98.59% |
| Heavy metal(Pb),mg/kg ≤ | ≤20 | <10 |
| Sulfate,% ≤ | Pass the test | Pass the test |
| Chloride,% ≤ | Pass the test | Pass the test |
| Loss on drying,% ≤ | 7.0 | 1.5 |
| Fluoride,% ≤ | 0.01 | <0.01 |
| Arsenic( As),mg/kg ≤ | 3 | <3 |
