Potassium Sulphate
| Inspection Items | Unit | Potassium Sulphate | Potassium Nitrate |
| Purity | %≥ | 99.0 | 99.5 |
| K2O | %≥ | 51.0 | 46.0 |
| Pb | %≥ | 20ppm | 20ppm |
| Fe | %≥ | 10ppm | 30ppm |
| Water-insoluble | %≥ | 0.5 | 0.02 |
| Appearance | White Powder | White Powder |
| Inspection Items | Unit | Potassium Sulphate | Potassium Nitrate |
| Purity | %≥ | 99.0 | 99.5 |
| K2O | %≥ | 51.0 | 46.0 |
| Pb | %≥ | 20ppm | 20ppm |
| Fe | %≥ | 10ppm | 30ppm |
| Water-insoluble | %≥ | 0.5 | 0.02 |
| Appearance | White Powder | White Powder |