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(c)
Sampling
The syringe aspirates one-half of the air volume (va/2)
while needle is moving to the sample vial.
The syringe aspirates the rear volume (vr) + injection
volume (vi) + lead volume (vl) of sample after the
needle has moved into the sample vial.
vd: Dead volume (the instrument inside parameter)
vi: Injection volume (the sample net volume to the flow path)
vl: Lead volume (forward part, cut volume)
vr: Rear volume (rearward part, cut volume)
va: Air volume (the air volume which sample is sandwiched.)
Figure 2-14 Sampling (Cut Injection Method)
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2.2.3
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