Definition:
Dwell volume
The dwell volume
(also called "gradient delay volume") of a gradient or on-line mixing
system is the volume of liquid contained in the system between the
point where the gradient is formed and the point where the mobile phase
enters the column. This volume includes the mixer, transfer lines, and
any swept volume (including the sample loop) in the injection system.
In a low-pressure-mixing ("one pump") system, the dwell volume will
also include the proportioning valve and pump liquid-end components.
