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COVID-19 status: SUMS is safely supporting research under current physical distancing and occupancy rules.  Meetings and seminars continue to be held via Zoom.  Email us at spectrometry@stanford.eduMore info

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Thank you to all those involved to make SUMS-RAS 2021 a success!

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Open Access


For polar small molecules, peptide, proteins: HPLC coupled to a UV detector and single quadrupole MS equipped with electrospray ionization; choice of small or large molecule chromatography, or direct sample injection.


For volatile small molecules: Gas chromatograph coupled to a single quadrupole MS with electron ionization (EI).