Abstract:
The method includes: preparing a plasma-treated liquid having a pH of 6 or more and 9 or less, the plasma-treated liquid being a liquid that has been treated with plasma generated in or near the liquid; and changing the pH of the plasma-treated liquid to less than 6 or to higher than 9.
Abstract:
The method includes: preparing a liquid having a pH of 9 or more; and generating plasma in or near the liquid to generate a plasma-treated liquid having a pH of 9 or more.