| 摘要 |
PURPOSE:To prevent the generation of hunting phenomena to the utmost by housing a liquid communicating part of a comparison electrode in a hole part which is not affected by the running speed of a sample liquid and discharging the liquid in the hole from a small hole opened at a side wall part of the hole part. CONSTITUTION:A sample liquid 3 is introduced from an introducing entrance 1 and is discharged from an introducing exit 2 as an overflow. Further, an inner solution e.g. consisting of KCl is supplied to a comparison electrode 9 as shown by a fine-line arrow mark and flows to a hole part 12 while permeating from a liquid communicating part 10 and is discharged from the introducing exit 2 together with the sample liquid through small holes 14, 15. On the other hand, when drift electric potential generated in the first path l1 consisting of a glass electrode 4 a hole part 16 the liquid communicating part 10, is denoted as VN1 and that of generated in the second path l2 consisting of the glass electrode 4 a prescribed vessel in the apparatus the small hole 15 the small hole 14 the liquid communicating part 10, is denoted as VN2, a drift electric potential VN added to the glass electrode 4 and the comparison electrode 9, is nearly equal to the VN1 and it becomes nearly zero. Hereby, the drift electric potential is not generated even if the running speed of the sample liquid 3 is varied. |
