... - )% ≤0.0050.01 % ≤0.01 Hygroscopicity% ≤0.250.30 % ≤0.25 Iron(Fe)% ≤0.003 % ≤0.003 K2O % ≤ 46Nitrogen ( in nitrate ) % ≥ 13.5Particle Size0.2-2.5 ... , 1-3 , 2-5 , 0.2-5MM0.2-2.5 , 1-3 , 2-5 , 0.2-5 Potassium Nitrate 99.4%min ... ,nitrate de potassium fertilizer(46-0-13.5)