Thermo Scientific thermoscientific Vanquish Pumps C, Operating Manual

Page: 222 / 296

9 • Pump-Specific Information
Page 222 Pumps C, Pumps F ( VC-Pxx, VF-Pxx)
Operating Manual
9.2.3 Dwell Volume of the Pump
The gradient delay volume of an HPLC system is defined as the volume
of the entire flow path between the point where the gradient is formed
and the point where the mobile phase enters the column (see
Gradient
Delay Volume, Dwell Volume and Ripple ( } page 236) ).
The pump contributes to the system gradient delay volume by the dwell
volume, which is the calculated volume between the point where the
gradient is formed and the pump outlet.
Figure 68: Dwell volume of the pump
No. Description
A-D Solvent options:
• 4 solvents available with the quaternary pump (solvents A-D)
• 3 solvents available with the dual pump (solvents A-C), with each of the
two pumps
1 Solvent degasser (vacuum degasser)
2 Proportioning valve
3 Pump head
4 Purge/sensor unit
5 Mixing system with capillary mixer and static mixer
6 Pump outlet
7 Dwell volume of the pump
For the dwell volume of the pump, see Performance Specifications
( } page 254) .