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IS 3025 (Part 53) (2003, Reaffirmed 2009): Method of Wastewater, Part 53: Iron (First Revision). ICS 13.060.50 832 92 95, 832 78 58. IS 3025 : Part 58 : 2006 (Reaffirmed Year : 2017 ) Methods of sampling and test (physical and chemical) for water and wastewater : Part 58 Chemical oxygen IS:3025(Part 22)1988 method. (Reaffirmed 2003),. Indicator Method. 1-1000mg/l. Alkalinity. IS:3025(Part 23)1986-method 2. (Reaffirmed 2003),. 12.1AIMTo determine chemical oxygen demand in the given water sample with thestipulations as perIS: 3025 (Part 58) - Reaffirmed 2006.12.2INTRODUCTIONBefore