Standalone Control
Setting the run parameters
95
Sample size
Set the sample size with the two switches below the sample size label shown in
Figure 53. The following table shows the injection volumes for each of the
switch settings.
The switch settings of 1, 2, 3, and 5 correspond to tenths of a syringe volume.
For example, the switch setting 2 is for an injection volume of two-tenths of the
syringe volume. For a 10-µl syringe, the volume would be 2 µl. For a 5-µl
syringe, the volume would be 1 µl. For a 0.5-µl syringe, the volume is one-fifth
of the syringe volume, so for switch setting 2, the volume would be 0.2 µl.
Figure 53. Switches for setting the sample size
Caution The injector volume for vaporizing injection ports must not produce an amount
of vapor that would exceed the liner volume. Larger volumes cause sample to
be lost through the purge vent and may contaminate carrier inlet lines. Refer to
GC Inlets—An Introduction.
1
2
3
5
Switch Setting
Tenths of Syringe Volume
Both up
Left up, right down
Both down
Left down, right up
sample
size
1
2
3
5
Set for 0.5 µl
with a 5-µl
syringe
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