Abstract
This paper discusses the basic characteristics and the precise efficiency of washing on the surface of precision instrument of ER water (electrolyzed reducing water) of dilute Na2SO4. First, the structure and the characteristics of electrolyzed reducing water producing system as well as how electrolyzed reducing water of dilute Na2SO4 is produced by it are described. Next, the relation between the characteristic value of Na2SO4 ER water and the value of electrolyzed electrolytic-current, and its difference from Na2SO4 ER water, NaCl ER water and NaOH solution are investigated experimentally. Lastly, based on the result of washing on the surface of precision parts by Na2SO4 ER water, C9H12 solution and pure water, the washing efficiency of Na2SO4 ER water is verified.