Agilent Technologies 1260 Infinity Quaternary LC VL System Manual And Quick Reference page 22

1
Introduction
Autosampler
Injection sequence
Before the start of the injection sequence, and during an analysis, the injection
valve is in the mainpass position
mobile phase flows through the autosamplers metering device, sample loop,
and needle, ensuring all parts in contact with sample are flushed during the
run, thus minimizing carry-over.
Figure 7
When the sample sequence begins, the valve unit switches to the bypass
position
port 1, and flows directly to the column through port 6.
Figure 8
22
Mainpass Position
(Figure 8 on page 22). Solvent from the pump enters the valve unit at
Bypass Position
Agilent 1260 Infinity Quaternary LC VL Manual and Quick Reference
(Figure 7 on page 22). In this position, the