Experience pure, great-tasting water with the NatureFlow F40 Countertop RO System. Featuring advanced 10-stage filtration with a 0.0001-micron membrane, it effectively removes up to 99.99% of contaminants, including heavy metals, chlorine, PFAS, and microplastics. The built-in remineralization technology restores essential minerals like calcium and magnesium, delivering clean, weak alkaline water (pH 9.0–9.5) for better hydration. With a high-efficiency 4:1 pure-to-drain ratio, smart digital controls, and a compact countertop design, the F40 offers convenience, sustainability, and premium performance in one system. | Natureflow | | F40 Countertop Reverse Osmosis Water Filter, UV, Remineralization,10 Stage Filtrations, 4:1 Pure to Drain, Room Temp | White | Best Buy