These examples show basic sample injection techniques using Cheminert two position valves. With rare exceptions, there is no difference between switching valves and external volume sampling valves, so the same valve can be used for either function.
The unique advantage of 8 and 10 port valves is that they reduce extra column volume by combining sampling and switching functions in a single valve. This minimizes expense, maintenance, service, and risk of leaks as compared to multiple 6 port valve systems.
Format descriptions
- Static: side-by-side view of valve in each position, much like in our print catalog
- JavaScript: one position is shown at a time, with the position changed by a mouse click
- YouTube: animated version delivered by YouTube
Applications, listed alphabetically
| Title | Valve | Format |
|---|---|---|
| Alternate column regeneration | 10 port | Static | JavaScript | YouTube |
| Detector selection from two columns, or one column and auxiliary carrier | 4 port | Static | JavaScript | YouTube |
| Loop sampling with backflush to detector | 8 port | Static | JavaScript | YouTube |
| Microvolume sample injection | 4 port | Static | JavaScript | YouTube |
| Sample injection | 6 port | Static | JavaScript | YouTube |
