(1) three stage water filter (2) three stage water purifier with PP/CTO/UDF filter (3) ... which fliter sand,mud,rust,sediment,etc in water.Stage 2:Granular Activated Carbon Cartridge which removes bad smell ... and fliter organic sediment, chlorine etc in water.Stage 3:Block Activated Carbon Cartridge which complete removes bad ... UF membranes . Water Filter for House,three stage,pp/cto/udf filter