202 1100 Series WS MWS Reference Manual
6 Introduction to the Well-plate Sampler
Injection Sequence
Before the start of the injection sequence, and during an analysis, the injection
valve is in the mainpass position (Figure 31). In this position, the mobile phase
flows through the well-plate sampler metering device, sample loop, and
needle, ensuring all parts in contact with sample are flushed during the run,
thus minimizing carry-over
When the sample sequence begins, the valve unit switches to the bypass
position (Figure 32). Solvent from the pump enters the valve unit at port 1,
and flows directly to the column through port 6.
Figure 31 Mainpass Position
Figure 32 Bypass Position
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