| 摘要 |
PURPOSE: To provide a composite electrode for ion concentration measurement by which plural ions are easily measured by just replacing a chip type ion electrode against one electrode support body. CONSTITUTION: An electrode support body is composed of an outer tube and an inner body contained in the outer tube so as to form a measurement electrode 29 at the end portion of the inside body, and a double junction type comparison electrode 40 is composed of first inside liquid 36, second inside liquid 39, and an inside electrode 37 between the outer tube and the inner body so as to form a composite electrode for ion concentration measurement. Therein, an electrode socket 17 is formed in the inner body, so that a chip type ion electrode 28 is mounted in the electrode socket 17 to be free in attaching in and detaching from, and the second inside liquid 39 can be taken out by moving the outer tube downward. |
