Filtration By Puroflo

• 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 organic chemicals
• Stage 3: 10 micron Carbon Block Filter (QCB-25001), which filters out residual chlorine and organic chemicals 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)