... analysis on your voice Ammonium Sulphate 98% with N 21%Ammonium Sulphate is our strong items.Its appearance is white ... ammonium sulphate is also extra pure.its nitrogen content is 21%.As with their various fuction,They usually used in ... crystal,no visiblemechanical impurityno visiblemechanical impurityno visiblemechanical impurityNcontent(dry basis),% ≥21.021.020.5Water content(H2O),% ≤0.20.31.0Free ...