This Everpure EV9328-73 Coldrink Quad 7FC filter system Balanced cartridge for optimum performance in varying water qualities. Improves the taste of fountain beverages and helps retain the drink’s carbonation. It reduces chlorine taste and odor and other offensive contaminants that can adversely affect the taste of beverages. The EverPure EV9328-73 filter's sanitary cartridge replacement is simple, quick, and clean. It has precoat submicron technology reduces dirt and particles as small as 1/2 micron in size and reduces health contaminants such as cysts.