Agilent Technologies 1260 Infinity II User Manual page 14

1
Introduction
Operating Principle
11 The gripper arm moves out of the needle station and the wash port snaps
12 The gripper arm replaces the vial, and returns to the home position.
13 The injection valve switches to the mainpass position.
Injection Sequence
Before the start of the injection sequence, and during a preparative run, the
injection valve is in the mainpass 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 carry-over.
Figure 2
14
back in position.
Simultaneously, the needle lowers into the seat.
Mainpass Position - standard position during runs and when the sampler
is idle
Agilent 1260 Infinity II Preparative Autosampler User Manual
Figure 2 on page 14). In this