HPLC Column selection
SD configuration – high pressure
This example illustrates a high pressure SD valve (or Cheminert Model C5) used for HPLC column
selection. This allows multiple columns to be installed permanently in the system,
eliminating instrument downtime and leakage potential resulting from having to
change columns repeatedly. The SD valve selects only column inlets – the column
outlets are connected to the detector via a low-volume manifold.
Move your mouse cursor over a Step to "switch" the valve, or go to
a non-animated version.
Step 1:
Sample flows from the injector through the SD valve to the inlet of Column 1, and
through the manifold to the detector.
Step 2:
The SD valve is advanced to select Column 2, and on through Column 8.
Further reference
More applications with multiposition valves
Valco multiposition valves – SD configuration (high pressure)
Cheminert multiposition valves – Model C5
|
