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From Mass Spec Terms
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Welcome to the Mass Spectrometry Terms and Definitions Project Page

This goal of this site was to provide information about the IUPAC sponsored project to update the Standard Terms and Definitions for Mass Spectrometry.


There are currently 2,240 entries in Mass Spec Terms as of Wednesday September 10, 2025.

Previous lists of mass spectrometry terms

Working Drafts of the Mass Spectrometry Terms Document

  • IUPAC Task Group MS Terms Third and Final draft
External review final draft of August 2006 (PDF Version).
International Mass Spectrometry Conference Poster (PDF)
  • IUPAC Task Group MS Terms Second Draft
Pre-review draft March 2006 (PDF Version).
  • Second Public Draft (ASMS Version)
Draft of May 2006 - reformatted from March 2006 (PDF Version).
  • First Public Draft
Presented at the 2005 American Society for Mass Spectrometry meeting June 2005..