Agilent InfinityLab LC Series Vialsamplers User Manual
20
1
Introduction
Operating Principle
When the sample sequence begins, the valve unit switches to the bypass
position (see
on page 20). Solvent from the pump enters the valve unit at
port 1, and flows directly to the column through port 6.
Figure 5
Valve in bypass - needle in vial, metering device aspirates sample volume
Vial
Wash
port
Needle
seat
Sampling loop
Solvent
Wash
pump
Metering
device
