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GC USP Alcohol method for methanol limit test injection had retention time shift

Question asked by patrick.s.nam on Sep 22, 2020
Latest reply on Oct 1, 2020 by james_jenkins

GC USP Alcohol method for methanol limit test injection had retention time shift from 3.5 minutes with ~10M area counts to 20 minutes with area count 700K. Checked or replaced liner/O-ring, septum, carrier gas flow, syringe and gold seal. What else should I look into?

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