Chemstation pre-run command/macro

Hello,

 

I wonder if I can use a pre-run command/macro to be executed in chemstation C.01.07 "Run time Checklist", for on/off activation of an external valve? I want to flush gas sample tubings as well as the loop on a gas sampling valve with proper amount af sample gas from a tedlar bag before injection, using a mirco pump connected as an external valve to the 7890B GC.

 

The gas samples are analyzed by the 7890B GC using sequence runs in chemstation.

 

Does anybody have a solution? How do I program a pre-run command for run time checklist? Where can I find the commands?

 

With kind regards -

Lars  

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