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 CelsiusColour: Standard White or Pure WhiteRadiation: Non - RadioactiveFree Ammonia: 160pxt ppm max.Free Flowing, Treated against caking, 100% free from harmful substances