RO water purifier comes with 8 stage water purification stages.Water passes through 8 Stage process : Pre-filter + Sediment filter + Carbon block + ART MAX (Advance Recovery Technology) + Patented Side Stream RO Membrane + MIN-TECH (Mineraliser Technology) + ZX Double Protection Dual Filter*(SAPC + SCMT).100% of the water passes through the RO Membrane and Double Purified by SCMT.