WATER FILTER CLEANER – PureH2O compatible water purifier filter replacement meets the same quality standards as the name brand filters. COMPATIBLE WITH – This carbon water filter replacement is the compatible replacement for Aqua-Pure C-Cyst-FF water filter. It’s recommended to change your filter every 6 months or 15,000 gallons. DRINKING WATER FILTER – The PureH2O PHWF-CYST compatible replacement water purifier filter filters out odors, taste, sand, rust, dirt, silt, and fine sediments. GRANULAR ACTIVATED CARBON FILTER – Highly-efficient carbon block filter which maximizes efficiency, eliminating all bypass opportunity, for more refreshing drinking water. DURABLE – The Filters Fast filter expertly captures dirt and debris, made from safe and durable materials for efficient water filtration. NSF Standard 42. PureH2O PHWF-CYST Compatible Replacement for Aqua-Pure C-Cyst-FF The PureH2O PHWF-CYST is a compatible replacement for Aqua-Pure C-Cyst-FF water cleaner filter. A coconut carbon filter that efficiently removes taste, odor, dirt, debris, and sediments from household drinking water. Compatible replacement for part number: 3US-PF01. Product Specifications: Filter Life: 6 months or 15,000 gallons Flow Rate: 0.75 gpm Operating Pressure: 10 to 100 psi Operating Temperature: 35 to 100 degrees Fahrenheit NSF: 42