PEG 600 (DART®, negative-ion) Disclaimer: These data are for informational use only. No guarantees are made for the accuracy of the data presented. July 27, 2020 Mass Spectrometry (MS), Reference Data 0 Comment Read More >>
Some Common Substances with Doublets Useful for Determining Resolution Disclaimer: These data are for informational use only. No guarantees are made for the accuracy of the data presented. July 27, 2020 Mass Spectrometry (MS), Reference Data 0 Comment Read More >>
New Generation LC-TOF/MS "AccuTOF" 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. July 27, 2020 JEOL News Articles, Mass Spectrometry (MS) 0 Comment Read More >>
Tandem Mass Spectrometry (MS/MS) 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. July 27, 2020 Essay / Tutorial, Mass Spectrometry (MS) 0 Comment Read More >>
MS Elemental Composition Calculations and Their Interpretation 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. July 27, 2020 Essay / Tutorial, Mass Spectrometry (MS) 0 Comment Read More >>
Mass Spectrometers - A Short Explanation for the Absolute Novice What does a mass spectrometer do? What are mass spectrometers used for? What does the mass tell us? How does a mass spectrometer work? July 27, 2020 Essay / Tutorial, Mass Spectrometry (MS) 0 Comment Read More >>
How Resolution Is Defined Several different definitions of resolution are used in mass spectrometry. It is useful to understand the distinctions between the different definitions to understand the characteristics of different mass spectrometers. July 27, 2020 Essay / Tutorial, Mass Spectrometry (MS) 0 Comment Read More >>
Synthetic Polymer Structure Analysis - Poly Propylene Glycol (PPG) The JMS-S3000 "SpiralTOF™" is a MALDI-TOFMS that incorporates an innovative SpiralTOF ion optics system. The JMS-S3000 is available with a TOF-TOF option that can acquire high-energy collision-induced dissociation (CID) product ion spectra for monoisotopically selected precursor ions. July 27, 2020 Application Note, MALDI SpiralTOF™-TOF, Mass Spectrometry (MS) 0 Comment Read More >>
Fraction base-KMD plots for a high-MW - S3000 - MSTips - 283 High molecular weight polymers are often MS-silent due to their inherent high dispersity (DM) or detected in the high mass range with low resolving power. An "on-plate" alkaline degradation has thus been developed as a sample pre-treatment on the MALDI target with tenths of ng of polymer to cut long industrial polyester chains into short oligomers amenable to MALDI-HRMS. July 27, 2020 Application Note, MALDI SpiralTOF™, Mass Spectrometry (MS) 0 Comment Read More >>
Introduction of the JMS-3000 SpiralTOF - Analysis of Bovine Serum Albumin The JMS-S3000 "SpiralTOF™" is a MALDI-TOF MS incorporating an innovative SpiralTOF™ ion optics system. JEOL's patented technology achieves a spiral ion trajectory of 17m within a compact 1m space. July 27, 2020 Application Note, MALDI SpiralTOF™, MALDI SpiralTOF™-TOF, Mass Spectrometry (MS) 0 Comment Read More >>