Buder Alkaline Water Ionizer HI-TAQ7 (Made in Japan by Kyushu Hitachi Maxell) Certificated by TUV / ISO13485 / SGS ORP: Max.-1000mv Flow Rate: Max. 5.5L/minute PH: 2.7~10.5 Cleaning cycle: Each second automatic reverse cleaning for 1/50 second (3600times per hour). The Quick-Change replacement cartridge (Silver activated carbon combined with UF membrane 0.01um) (Made in Japan by Kyushu Hitachi Maxell) Lifetime: 12000liters Certificated by JIS / SGS.