| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrochemical sensor capable of constantly maintaining the concentration of a chloride ion around a reference electrode from start of processing to completion of processing in electrochemical measurement processing requiring a long time.SOLUTION: There is provided an electrochemical sensor 3 in which a reference electrode 31 is formed by an electrode forming material containing a chloride (as an example, AgCl) on one surface of a support substrate 10 and which has a storage part 30 for storing a liquid (an electrode protective solution containing a chloride, a liquid to be measured for electrochemical measurement processing, or the like) in a state where the liquid is brought into contact with the surface of the reference electrode 31 (electrode layer 12). A small hole 14a which makes the internal space (gap S) of the storage part 30 and the outside of the storage part 30 communicate with each other is formed in the storage part 30. |
