Specifications:Nitrogen: 46% min, Biuret: 1.0%max,Moisture: 0.5%max,Particle size: 0.85~2.80mm 90%min,Appearance: white, fre Product: Prilled Urea Specifications:≥46% Nitrogen: 46% min≤1.0% Biuret: 1.0%max ≤0.5% Moisture: 0.5%max 0.85~2.80mm ≥90% Particle size: 0.85~2.80mm 90%min ,,Appearance: white, free flowing, free from harmful substances and foreign matters. urea