Inert Extraction Source, What is the difference on instrument sensitivity when performing Atune vs Etune?

On Inert Extraction Source , What is the difference on instrument sensitivity when performing Atune vs Etune? On the Agilent Source Guide says that I can use either one but  I noticed that if I perform an Atune the electron multiplier is 5times higher than when I perform an Etune, also the repeller energy is about 30 Time higher than on the Etune. Are the sensitivity for both tunes the same? Thanks in Advance

  • Hi LilianR!

    If you have Extractor Source you should use Etune, because during Atune no voltage applied to the Ion Body and Extractor Lens. When you use Etune you don't have to add 5 times higher voltage and you can spare theese parts. The sensitivity will be kinda the same because the Tune Macro will set to provide a tuning ion abundance between 450,000 –600,000 for the base peak.

Was this helpful?