| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily perform standard solution calibration of a pH meter which constitutes a pH adjustment tank. <P>SOLUTION: The pH metering tank includes: lifting support means 2 for positioning a pH meter 1 at any one of a metering position for immersing an electrode 1a of the pH meter 1 in treatment water W in the pH metering tank, a cleaning position for positioning the electrode 1a on a fluid level Wa of the treatment water W, and a calibration position for positioning the electrode 1a at an upper part rather than the cleaning position and supporting the pH meter 1 to be vertically movable for the respective positions; supply means 3 of the standard solution; a receptacle cup body 4 of the standard solution; and cleaning means 5 for injecting wash water to the electrode 1a and the receptacle cup body 4 when the electrode 1a is at the cleaning position. <P>COPYRIGHT: (C)2012,JPO&INPIT |
