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Falling retentiontimes on GC - Any ideas as to why?

Question asked by jba-novozymes on Apr 11, 2018
Latest reply on Apr 26, 2018 by james_jenkins

We have checked for leakes, controlled the pressure and flow, with no remarks. The beseline is fine and the seperation so far also good, but the retentiontimes keep dropping about a minute, every couple of days.