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Orbitrap Fusion Lumos EASY-ETD

Most Advanced Mass Spectrometer for the Most Advanced Research Applications


Excel at the most challenging of applications, including low level PTM analysis, multiplexed relative quantitation using isobaric tags, intact protein characterization, as well as MSn analysis of small molecules with the new Thermo Scientific™ Orbitrap Fusion™ Lumos™ Tribrid™ Mass Spectrometer. This system incorporates the brightest ion source, a segmented quadrupole mass filter with improved selectivity and ion transmission, Advanced Vacuum Technology for improved ion transmission to the Thermo Scientific™ Orbitrap™ mass analyzer, and ETD HD, a higher-capacity ETD fragmentation.

The latest innovations include the Advanced Peak Determination (APD) algorithm for improved data-dependent experiments and two new hardware options: UVPD, a new fragmentation technique achieved with a 213 nm UV laser and 1M, which provides 1,000,000 FWHM ultra-high resolution for improved structural elucidation and quantitation of isobaric compounds

Check out the latest innovations in Orbitrap Fusion Lumos Technology:


  • EASY-IC option for improved mass-to-charge ratio (m/z) assignment

  • EASY-ETD option to efficiently fragment peptides and proteins

  • UVPD option to fragment the most challenging compounds

  • 1,000,000 FWHM ultra-high resolution for in-depth characterization

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Overview of the EASY-ETD Option

Efficient way to fragment peptides and proteins


Electron transfer dissociation (ETD) is a gas phase dissociation technique to fragment multiply charged ions in a mass spectrometer in order to obtain structural information. The optional Thermo Scientific™ EASY-ETD™ ion source1 uses Townsend discharge ionization to generate a highly stable reagent ion flux. The source is very compact, fitting right behind the ion funnel, inside the mass spectrometer. Intelligent, automated precursor ion sorting routines, reagent filtering using the quadrupole mass filter, and charge-state-specific calibration of ETD reaction time maximize the quality of ETD spectra. ETD and EThcD HD modes are techniques on Orbitrap Fusion Lumos MS to increase detection limits and dynamic range of ETD spectra.

1Earley et al. Anal Chem. 2013, 85(17)