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regarding analyte carry over

http://www.chromforum.org/viewtopic.php?t=23573

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regarding analyte carry over

Posted: Tue Oct 08, 2013 10:24 am
by rrm1987
I am using phenomenex kinetex c18 column for ochratoxin A analysis. Mobile phase(Acetonitrile/2%acetic acid=1:1);Flow rate-1ml/min;

when I used to analyse it I am facing carry over problem. I am not sure what is causing this problem? please help me out from this issue.

Re: regarding analyte carry over

Posted: Wed Oct 09, 2013 2:07 pm
by Gerhard Kratz
Please check your autosampler or injection valve first, than check the Connections from the injection System to the column. It can be caused by extra column effects.
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