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Unknown peaks in MS5A 9 ft

Question asked by amrnasser on Sep 3, 2019
Latest reply on Dec 17, 2019 by james_jenkins

I am using GC-PDHID to check impurities in He by column MS5A 9ft 1/8 80/100 UM. i got two unknown peaks, one between oxygen and nitrogen and other peak between nitrogen and methane. could any one identify those peaks