EP requirement for Nitrogen

Chromatography Forum: GC Archives: EP requirement for Nitrogen
Top of pagePrevious messageNext messageBottom of pageLink to this message  By chris on Friday, March 9, 2001 - 05:29 am:

Does anyone have any experience running the EP Assay for Nitrogen. It requires using an external standard of Nitrogen and the specification is not less than 99.5%, based upon peak heights. I have heard that many people are having trouble achieving this requirement, even with a well-tuned injection loop. Chromatograph suppliers state that this is just at the limit of the capabilities of the current instrumentation. Any help is greatly appreciated.


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