This product is for business contractors. This product is connected directly to tap water to save space and easily purify pure water. Removes 99% of bacteria and 99.9% of silica for cleaning appliances etc. Can also be used as pre-treated water with super pure water. Specifications: Ion replacement cartridge; Production volume (L/h): Ion replacement cartridge; Model number: 9.4011; *Tank is not included with the main unit.