Agilent Technologies Varian CP-8400 Operator's Manual page 55

Solvent Plug
following parameters:
Vial for Solvent Plug (I, II, III) – This parameter defines which of the
vials will be used as the source for the solvent plug. The default selection
is wash vial I.
Solvent Plug Size (0-5, 0-10, or 0-100 µL) – This parameter defines the
volume of solvent that will be used for the solvent plug in 0.1 µL steps for
the 5 and 10 µL syringes. The default volume is 0 µL.
Solvent Drawup Speed (0.1-25, 0.1-50, or 1-100 µL/sec) – This
parameter defines how quickly the plunger will be withdrawn form the
syringe during the solvent plug extraction procedure. The default value is
5 µL/sec for each of the syringe types.
Solvent Pause Time (0-9.9 sec) – This parameter defines how long the
syringe needle will remain in the vial after the plunger has been
withdrawn a distance corresponding to its set volume in the Solvent plug
size parameter. The default value is 0 sec.
Solvent Air Gap (Yes or No) – Setting this parameter to Yes will cause
the syringe plunger to be withdrawn an amount corresponding to 1 µL
prior to the syringe sled descending and the solvent being drawn up.
Setting this parameter to No will cause no upper air gap to be formed.
The default value is 0.
Page 3 Parameters
Viscosity Delay (sec) – defines the amount of time the system will wait
after the syringe plunger is withdrawn, drawing sample into the syringe.
This time is required to allow samples with high viscosity to migrate into
the syringe. The syringe remains in its loading position with the needle at
its programmed depth in the sample vial for the duration of the Viscosity
delay. The default value is 0.0.
Plunger Speed During Filling (0.1-25, 0.1-50, or 1-100 µL/sec) –
defines the speed at which the plunger will be withdrawn to draw up
sample. This parameter is required to prevent cavitation of some
solvents during extraction. The default speed is 5 µL/sec.
Plunger Speed During Injection (0.1-25, 0.1-50, or 1-100 µL/sec) –
Depending on the volume of the syringe installed, this parameter will be
limited to the specified ranges. The Injection rate setting has 0.1 µL/sec
step resolution. The default value is 50 µL/sec.
Pre-Injection Delay (0-99.9 sec) – Specifies the length of time the
needle will remain in the injector prior to the advancing of the syringes
plunger to expel its contents into the injector. The default value is 0 sec.
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