1.1 This standard lays down the requirement regarding material, shape, construction, chemical charges, anti-corrosive treatment and tests for trolley mounted dry powder fire extinguishers of capacities 25 kg, 50 kg, 75 kg and 100 kg.
IS 10658-1983 history
1984IS 10658-1983 Specification for Large Capacity Dry Powder Fire Extinguishers (Trolley Mounted)