This standard ( Part 5 ) prescribes the methods for determination of secondary nutrients ( calcium, magnesium and sulphur ) and micronutrients ( iron, zinc, manganese, copper, boron, molybdenum, cobalt, lead and chlorine ) in fertilizers, including fertilizer mixtures.
IS 6092 Pt.5-1985 history
1986IS 6092 Pt.5-1985 Fertilizer Sampling and Testing Methods Part 5 Determination of Secondary Elements and Trace Elements