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Documentation in support of your JEOL product.

Disclaimer: These data are for informational use only. No guarantees are made for the accuracy of the data presented.

Disclaimer: These data are for informational use only. No guarantees are made for the accuracy of the data presented.

Disclaimer: These data are for informational use only. No guarantees are made for the accuracy of the data presented.

Disclaimer: These data are for informational use only. No guarantees are made for the accuracy of the data presented.

Disclaimer: These data are for informational use only. No guarantees are made for the accuracy of the data presented.

Disclaimer: These data are for informational use only. No guarantees are made for the accuracy of the data presented.

Disclaimer: These data are for informational use only. No guarantees are made for the accuracy of the data presented.

It has been a decade since Dodonov and his colleagues first announced the electrospray ionization time-of-flight mass spectrometer (ESI-TOF MS). Their initial findings have been enhanced by Standing and others, and it has been recently reported that a large TOF MS system achieved a mass resolution exceeding 10,000.

Mass spectrometers are commonly combined with separation devices such as gas chromatographs (GC) and liquid chromatographs (LC). The GC or LC separates the components in a mixture, and the components are introduced, one by one, into the mass spectrometer. MS/MS is an analogous technique where the first-stage separation device is another mass spectrometer.

Accurate mass measurements are frequently used to determine the elemental composition for molecular and fragment ions. These measurements are normally obtained by acquiring a high resolution mass spectrum so that the masses are measured for a single species and not measured for unresolved or partially resolved peaks.

Other Resources

Image Gallery
  • View a selection of NMR and MS spectra
  • Walkup NMR
  • See how the Delta NMR software allows users to just "walk up" and start NMR experiments
  • Mass Spec Reference Data
  • View our page of useful molecular references for Mass Spec
  • Tutorials (Mass Spec)
  • Documents on the basics of mass spectrometry
  • Delta NMR software Tutorials
  • Videos on how to use the Delta NMR software
  • No-D NMR
  • Description of No-D NMR and how it can be used to eliminate the need for deuterated solvents
  • Non Uniform Sampling (NUS)
  • Description of how NUS is used to greatly reduce the time needed for running NMR experiments
  • NMR Basics
  • Overview of the Basics of NMR Theory
  • NMR Magnet Destruction
  • See our presentation of the slicing open of a JEOL Delta-GSX 270 MHz NMR Magnet
  • Media

    Corona - Glow Discharge (DART Ion Source)

    January 28, 2022
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