| Cat. No. | Capacity ml | Length* | PK | |
|---|---|---|---|---|
| 9920509 | 250 | 60 | 1 | |
| 9920513 | 250 | 20 | 1 | |
| 9920514 | 100 | 20 | 1 | |
| 9920515 | 100 | 60 | 1 |
The special bottle neck of the Karlsruhe bottles absorbs the water which is displaced by the stopper of the electrode. This construction guarantees clean working and ensures at the same time that the test results are not adulterated by unwanted entry of oxygen into the samples.