Inspection Item Unit Optical G. Ind.G. Agri.G. Ceramic G. crystal. G.
Assay(KNO3) % 99.9 99.8 98 96 99.2
Moisture % 0.10 0.10 0.10 0.10 0.6
Chlorides % 0.01 0.03 0.03 0.08 0.015
Water-insolubles % 0.01 0.01 0.01 0.15 ---
Sulphates % 0.005 0.01 --- --- 0.005
Iron % 0.002 0.01 --- 0.003 0.002
Potassium oxide % --- --- 46.0 44 ---
Nitrogen % --- --- 13.5 13.5 ---
Sodium % --- --- --- 0.007 0.2
Sodium Oxide % --- --- --- 0.01 ---
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