November 16, 2016, 715004521 Rev. C
Page 29
Figure 2–6: Step 4: Metering syringe positions the sample in the sample loop
The injection valve rotates into the load position. The metering syringe loads the programmed
sample volume into the sample loop.
Waste
Waste
Auxiliary valve (load position)
Metering syringe
Injection valve (Load position)
Sample
Liquid mobile phase (CO
2
)
Gas mobile phase (CO
2
)
Air gap
Buffer volume
Sample
Weak wash
From pump
To column
Sample loop
Sample
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