Specifications for prilled urea 46%N: Nitrogen: 46% min. Moisture: 0.3% max. Biuret: 1% max. Granulation: 1 - 4 mm 90-94 % min. Melting Point: 132 Degrees Celsius Colour: Pure White Prilled Radiation: Non - Radioactive Free Ammonia: 160pxt ppm max. Prilled,Free Flowing, Treated against caking, 100% free from harmful substances Specifications for granular urea 46%N: Nitrogen: 46% min. Moisture: 0.5% max. Biuret: 1.4 % max. Granulation: 2 - 4 mm 90-94 % min. Melting Point: 132 Degrees Celsius Colour: Standard White or Pure White Radiation: Non - Radioactive Free Ammonia: 160pxt ppm max. Free Flowing, Treated against caking, 100% free from harmful substances