Agilent Technologies 1260 Infinity II User Manual page 17

1
Introduction
Operating Principle
When the metering unit has drawn the required volume of sample into the
sample loop, the vial is replaced in the sample tray. The wash port flips into
the origin position, the needle is lowered into the needle seat, and the
injection valve switches back to mainpass position, flushing the sample onto
the column (see Figure 5 on page 17).
Figure 5 Valve switches to main pass - sample is transferred towards the LC column
Agilent 1260 Infinity II Preparative Autosampler User Manual 17