Hi all,

I am trying to reduce carryover using the injector program feature in MassHunter Acquisition software for an Agilent 1290. I wanted to know if it is required to use an external vial to wash the needle or can I write the program using commands which just involve (1) Needle wash in flush port (2) Inject sample (3) Injector Flush, etc.

thanks,

Tessa