METHOD FOR MANUFACTURING ELECTROLYZED ION WATER

PROBLEM TO BE SOLVED: To provide a method for manufacturing electrolyzed ion water having characteristics of excellent productivity and excellent cleanliness. SOLUTION: The method for manufacturing electrolyzed ion water comprises supplying an electrolytic solution comprising pure water or ultrapure water and hydrochloric acid to an electrolytic tank equipped with a pair of carbon electrodes, electrolyzing the liquid to obtain electrolyzed water, and diluting the electrolyzed water with ultrapure water in a predetermined proportion to produce electrolyzed ion water, wherein the electrolytic solution contains hydrochloric acid by 10 mass% to 20 mass%. The carbon electrode is preferably a graphite molded body, and more preferably the carbon electrode is a graphite molded body having a bulk density of 1.90 g/cm3or more and a volume resistivity of 1,200 μΩ cm or less. The current density during electrolyzing is controlled to more than 0.3 A/dm2to 0.8 A/dm2, and more preferably, the current concentration is more than 20 mL/min×A to 40 mL/min×A. COPYRIGHT: (C)2008,JPO&INPIT