| Property | Specification | Test Method |
|---|---|---|
| Potassium Content (as K₂O) | ≥ X% | Flame Emission Spectroscopy (ICP-OES) or Gravimetry |
| Appearance | White to off-white crystals or powder | Visual |
| Solubility in Water | Soluble | Gravimetric Analysis |
| Loss on Drying | ≤ Y% | Oven Drying at 105°C |
| Chloride (Cl⁻) | ≤ Z% | Ion Chromatography |
| Sulfate (SO₄²ˉ) | ≤ W% | Gravimetric Analysis |
| Insoluble Matter | ≤ V% | Gravimetric Analysis |
| pH (10% solution) | X – Y | Potentiometric method |
| Magnesium (Mg) | ≤ U ppm | Atomic Absorption Spectroscopy (AAS) |
| Sodium (Na) | ≤ T ppm | Flame Emission Spectroscopy (ICP-OES) |
