This Everpure EV9607-20 ESO 7 Three-Stage Blending Cartridge provides softened/buffered/filtered water. It also reduces water-related ice machine problems caused by scale build-up from dirt and dissolved minerals. The replacement cartridge reduces chlorine taste and odor as well as other offensive contaminants. A small amount of carbon filtered . The Everpure EV9607-20 ESO 7 filter's sanitary cartridge replacement is simple, quick, and clean.