Puroflo ProQ-550 Reverse Osmosis Water Filtration System

The 5-filter kit includes all filters for the PROQ-550 System: Stage 1: 5 micron Sediment Filter (QSF-25003), which has high chemical resistance and removes dirt, sand, as well as rust Stage 2: Granular Activated Carbon (GAC) Block (QGA-25002), which removes chlorine and other containments Stage 3: 10 micron Carbon Block Filter (QCB-25001), which filters out residual chlorine and containments before the water enters the RO membrane/filter Stage 4: 50 gallons per day (GPD) reverse osmosis membrane filter (QME-25050) Stage 5: Inline GAC filter (does not include adapter end fittings) For replacement filters set please check PROQ Filters page