DI deionized water device > it produces water in 1 Megaohm-cm specific resistance.there is not electricity consumption, it Works on battery. İt's setup and inserting of cartridge is highly easy . it takes feedwater from the removable tank behind it. There is UV light in device. Product water is ultra pure water in 18,2 Megaohm-cm specific resistance and in type 1 quality . it produces pure water suitible for use in spectroscopy and chromatography devices. It has a filter in 0.05 µm bore diameter and polymeric structure as a last filter.Production rate is 0.6 liter/ minute. It doesnt require service. When the time of cartridge change comes, it warns you. Turn the water intake key and take your ultra pure water.