Potassium (K2O) 50.0% min Moisture content 1.0% max Free acid (H2SO4) 1.5% max Potassium Sulfate 98.5%min Chlorides 0.05%-1.5% Iron 0.02%max Heavy metal 0.002%max Calcium 0.04%max Water insolubles 0.5%max PH value 5.57.5 Packing: In 25/50KGS net PP/PE bag. Payment: T/T Quantity: 24mts per container In 25/50KGS net PP/PE bag.
