| 摘要 |
Provided are a composite electrode having a simpler configuration with a glass electrode adopted as an internal electrode of a comparison electrode, and an electrode member for use in the composite electrode. An electrode member (2) used in a composite electrode (1) provided with a measurement electrode (M) and a comparison electrode (R) includes a first tube (21), a second tube (22), and a third tube (23), wherein the first tube (21), the second tube (22), and the third tube (23) configure a substantially coaxially disposed triple tube structure. The measurement electrode (M) is configured with a measurement sensing portion (24) provided in the first tube (21) and a first holding portion (26) formed by the first tube (21). The comparison electrode (R) is configured with a cylindrical glass sensitive film (25) formed in the second tube (22) for comparison, a second holding portion (27) formed by the first tube (21) and the second tube (22) for holding an internal liquid (S3) inside the comparison electrode, a third holding portion (28) formed by the second tube (22) and the third tube (23) for holding a glass electrode internal liquid (S2) for comparison, and a liquid junction portion (29) provided in the second tube (22). |
