Inspection Item | Unit | Optical G. | Ind.G. | Agri.G. |
Assay(KNO3) | % | 99.9 | 99.4 | 98 |
Moisture | % | 0.10 | 0.10 | 0.10 |
Chlorides | % | 0.01 | 0.03 | 0.03 |
Water-insolubles | % | 0.01 | 0.02 | 0.01 |
Sultes | % | 0.005 | 0.01 | --- |
Iron | % | 0.003 | 0.01 | --- |
Potassium oxide | % | --- | --- | 46.0 |
Nitrogen | % | --- | --- | 13.5 |