Tender For supply of supply of spares for servicing and maintenance of water purification systems : : - sediment filter spun 20 inch 2 point 5 inch dia 5 micron to be changed monthly , 20 inch granularactivatedcarbon filter gac filter to be changed on requirement , 20 inch chlorine taste and odor filter cto filter to be changed on requirement , 10 inch sediment filter spun 2 point 5 inch dia 5 micron 10 inch granularactivatedcarbon filter , 10 inch transparent uf filter with pressure switch , 10 inch pp spun