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Negative ion calibration

http://www.chromforum.org/viewtopic.php?t=7174

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Negative ion calibration

Posted: Wed Oct 24, 2007 10:22 am
by MIB_EO
Anybody got any suggestions as to what to use to create a calibration curve in Negative Ion ESI TOF MS.

I normally use PEG for positive ion, and haven't had to work in Neg before. PEG however doesn't ionise in Neg ion mode.

If it makes a dfference I'm running a Waters LCT.

mass calibration

Posted: Thu Oct 25, 2007 4:26 am
by BillW
I assume that you mean calibration of the mass axis. In that case, I would recomend Agilent's TOF calibration mix. It works in both + and - ion mode and is pre-mixed. Ingredients are in the product insert, so you could make it up yourself if u like.
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