METHOD AND DEVICE FOR MEASURING PH OF ELECTROLYTIC ACID WATER

摘要

PURPOSE:To obtain a method and device for easily measuring the pH of electrolytic acid water at a manufacturing site or a usage site such as a hospital and a house. CONSTITUTION:Two pH sensitive electrodes 3 and 4 are laid out at a channel 2 inside a flow cell 1, the pH sensitive electrodes 3 and 4 are calibrated with tap water supplied to the channel 2 as a calibration liquid, and then electrolytic acid water is supplied to only the pH sensitive electrode 4 while the pH sensitive electrode 3 is allowed to contact the tap water. While the tap water and the electrolytic acid water are liquid-joined in the channel, the pH of the electrolytic acid water is measured according to the difference in the potential between two pH sensitive electrodes 3 and 4.