... 4. High performance water purifying filter cartridge (silver-carrying activeated carbon filter cartridge) 5. Replacement of filter cartridge automatically notice, drinking ... temperature, water flow volume, and electrolyzing, cleaning, lifetime of filter cartridge, pH value O. R. P indicator etc 8. pH ... water: mode 1, 2, 3, 4; pH range: 7--11* Filter water (NEUTRAL): mode 5-- pH 7* Acid water: mode 6 ...