| Inspection item | Trade standard | Inspection results | Conclusion |
| Content Wt.% | ≥ 98 | 98.2 | All conform |
| 10g/L water Solution pH | ≥ 3.8 | 3.9 |
All conform |
| Color | White | Up to standard |
All conform |
| loss on dried weight ness . % | ≤ 0.5 | 0.3 |
All conform |
| Granular 10-40 mesh | ≥ 90% | 91 |
All conform |
