... flow rate per minute, ionization indicator, remaining filter life for dual filter system, auto-diagnosisindicators, water purification, and sound ... active carton: 4, 000 liters(1058 gal), Active Carbon with silver added andultrafiltration:12000 liters (3174 gal). Message ... -filter: PP cotton, Non-woven fabric, Active Carbon, Active Carbon withsilver added, 0.01 micron hollow fiber ultrafiltration system ...