222 Agilent 1200 Series Autosampler Reference Manual
7 Introduction to the Autosampler
Next, the needle is raised, and the vial is positioned below the needle. The
needle moves down into the vial, and the metering unit draws the sample into
the sample loop (Figure 32).
When the metering unit has drawn the required volume of sample into the
sample loop, the needle is raised, and the vial is replaced in the sample tray.
The needle is lowered into the needle seat, and the injection valve switches
back to the mainpass position, flushing the sample onto the column
(Figure 33).
Figure 32 Drawing the Sample
Figure 33 Mainpass Position (Sample Injection)
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