Each cartridge has a specific filter for a pure and healthy drinking water from a purifier or reverse osmosis.
Some have integrated quick coupling to save space in the ducted reverse osmosis. They filter is bad taste, or limestone, or to mineralize or bacteria present in the water. They are all certified by FDA and NSF for the European standard to ensure the quality of drinking water. The cartridges should be changed every year in a health goal. Feel free to browse the site for diproclean.com choose from a wide range of filters !