When columns must be regenerated following each analysis, this technique permits automation of the process. While one column performs the analysis, the second column undergoes regeneration by use of an auxiliary pump. Once the first analysis is complete, the valve is switched and the regenerated column is now ready for analytical use.
Click below to change the valve position. (Currently shown in Position A)
A: Column 1 performing separation, column 2 being regenerated
B: Column 1 being regenerated, column 2 performing separation