Item Standard Typical Result Appearance White powder or granule Pass K2SO4 95.0%min 98.2% K20 50.0%min 51.1% Moisture 1.5%max 0.98% CL 1.5%max 1.45% S 17%min 17% Free Acid(H2SO4) 1.5%max 1.42% PH 3-5 4.5 Water Soluble 90%min 90%