| Inspection Items | Requirement | Inspection Results | Conclusion or not |
| N Content % | ≥20.5 | 20.8 | Conformed |
| Moisture % | ≤1.0 | 0.6 | Conformed |
| Free acid % | ≤0.2 | 0.09 | Conformed |
| S Content% | ≥23.6 | 23.9 | Conformed |
| Item | Unit | Excellent grade | Test Result |
|
Appearance |
--------------------- |
crystalline | crystalline |
| Total N | % min | 21 | 21.1 |
| Moisture | % max | 0.2 | 0.15 |
| Free Acid | % Max | 0.03 | 0.02 |
| Iron(FE) | %max | 0.007 | 0.004 |
| Arsenic(AS) | %max | 0.00005 | 0.00002 |
| Heavy Metals | %MAX | 0.005 | 0.002 |
| Water-insoluble Matters | %MAX | 0.01 | 0.008 |
| Purity | ------------------- | 99% | pass |
| Sulfur | % min | 23.9 | 24 |