ProOne RO membrane 80 GPD high-quality for best reasult.
Product Features: Effectively remove all organic contaminants, viruses, microorganisms, colloids, and heavy metals in the water; Specifications 11.8(in), diameter 1.8(in) Function parameters: RO reverse osmosis membrane, filtration accuracy of 0.0001 microns; Life cycle: 15-30 months (Recommendation 20 months to replace and depend water quality) Compatible with almost all domestic RO system on the market*"