Agilent Technologies InfinityLab LC Series User Manual page 19

1 Introduction
Operating Principle
12 The gripper arm replaces the vial, and returns to the home position.
13 The injection valve switches to the mainpass (main path) position.
Injection Sequence
Before the start of the injection sequence, and during an analysis, the injection
valve is in the mainpass (main path) position (see
position, the mobile phase flows through the autosamplers metering device,
sample loop, and needle. This ensures that all parts in contact with sample are
flushed during the run, thus minimizing carryover.
Figure 4
Agilent InfinityLab LC Series Vialsamplers User Manual
Simultaneously, the needle lowers into the seat.
Vial
Mainpass (main path) Position - standard position during runs and when the sampler
is idle
Sampling loop
Wash Needle
port seat
Figure 4 on page 19). In this
Solvent
Wash
pump
Metering
device
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