HTA HT2800T - Page 145

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The following parameters can be viewed/edited:
• Sample Volume: volume of sample to be injected;
• Fill Volume: volume of sample to aspire for sample wash and for the Pull up Strokes
(see below).
• Air Volume: the quantity (volume) of air to aspire after the sample has been drawn; this
prevents volatile samples evaporating from the needle;
• Sample Washes: number of washes to make with the sample;
• Pull Up Strokes: the rapid up and down movements of the plunger to eliminate air
bubbles from the syringe.
Select “Exit” to exit from this screen and return to the “RUN: METHOD X” screen (see
paragraph 5.2.2 “Method X: Setting method parameters”).
5.2.2.5 Injection parameters
Access sequence: RUN>SETTINGS >METHODS>METHOD X>INJECTION
The following parameters can be viewed/edited:
• Injection speed: the syringe dispensation speed used during injection;
• Pre Injection Dwell: the waiting time of the syringe needle inside the injection port
before making the injection (this allows the temperature of the syringe to equilibrate with
the temperature of the GC inlet).
• Post Injection Dwell: is the waiting time of the syringe needle inside the injector after
the injection (this allows the complete evaporation of the sample).
Select “Exit” to exit from this screen and return to the “RUN: METHOD X” screen (see
paragraph 5.2.2 “Method X: Setting method parameters”).