Five micron carbon block reduces dirt and fine particles from drinking water Effectively reduces unwanted tastes, odor and chlorine High porosity design prevents the cartridge from plugging before its adsorption capacity is exhausted Improves the taste of beverages such as fountain drinks and coffee Phosphate reduces water-related equipment problems caused by scale build-up from dirt and dissolved minerals Helps keep equipment running at peak efficiency and keeps maintenance costs down Drop-in design fits most 10" bowls