IC Control
Selecting the Offset Volume (EG40/EG50)

The Eluent Generator Offset Volume option specifies the delay volume between the pump outlet and the injection valve. Because the EG40/EG50 is located between the pump and the injection valve, the eluent concentration gradient produced by the EG40/EG50 may reach the column more quickly than the %-Gradient produced by the pump.

Chromeleon uses the offset volume to calculate a time delay in starting the EG40/EG50. The delay synchronizes EG40/EG50 and gradient pump operation. The default offset volume of 0 µL can be used for most systems. However, the actual offset volume may be different, depending on the system configuration. The offset volume has no effect during isocratic operation.

To change the offset volume:

1. Start the Server Configuration program

2. Double-click the EG40/EG50 entry in the list of devices for the Timebase.

3. Select the Pump Link & Cartridge tab page.

 Note: 

The Offset Volume option is used only for the EG40 and EG50. It is not available or required for other eluent generator models.