Agilent InfinityLab LC Series Vialsamplers User Manual 21
1Introduction
Operating Principle
Then the vial is positioned below the needle. The needle moves down into the
vial, the metering unit draws the required sample volume into the loop, and the
needle is raised. In the next step, the needle is washed (see
Figure 6 on page 21).
Figure 6 Outer face of needle getting washed in wash port
Vial
Wash
port
Needle
seat
Sampling loop
Solvent
Wash
pump
Metering
device