When water containing sodium chloride(NaCl) is electrolyzed, strongly acidic electrolyzed water is generated on the anode. However, it is unsuitable for biological applications because of its strong acidity. Weekly to slightly acidic electrolyzed water(WSAEW) has a physiological pH levels and can be applied to various uses at home care. Generally, in order to make WSAEW with symmetric electrolytic cell, hydrochloric acid is required. The present study provides a method of producing WSAEW with NaCl solution. In the electrolysis process a asymmetric electrolytic cell is used. As a result, WSAEW was obtained directly by this device and this water showed the strong bactericidal activity. This device is useful for producing WSAEW as a disinfectant to employ at home care, when considering economic and environmental factors, since it returns to ordinary water after use.
