Time of Flight Mass Spectrometer (TOF MS)

Time-of-flight mass spectrometers (TOF MS) do exactly what their name suggests: determine an ion’s mass-to-charge ratio (m/z) based on how long it takes for that ion to travel down the instrument’s “flight tube” and reach the detector. Frequently, though not exclusively coupled to matrix-assisted laser desorption ionization (MALDI) sources, TOF MS come in a variety of configurations, including a single-stage time-of-flight mass spectrometer, a multi-stage TOF/TOF, and even a hybrid quadrupole-TOF (Q-TOF) instrument; the latter two enable MS/MS applications. Often, time-of-flight mass spectrometers contain two detectors: a linear detector at the end of the flight tube, and a “reflector” detector, which captures ions that were redirected back towards the source by a “reflectron.” The reflectron serves two purposes: correcting for discrepancies in initial kinetic energy of identically sized molecules (which would cause them to reach the detector at different times and thus, have different apparent m/z values) and lengthening the flight path, improving resolution.

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CompanyShimadzuShimadzuShimadzuShimadzuShimadzu
ItemMegaTOF Megadalton MALDI Mass SpectrometerAxima Assurance MALDI Time of Flight Mass SpectrometerAxima Confidence MALDI TOF Mass SpectrometerLCMS-9030 Q-TOF Mass SpectrometerLCMS-9050 Q-TOF Mass Spectrometer
Citations
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Figures
Catalog NumberMegaTOFAXIMA AssuranceAxima ConfidenceLCMS-9030LCMS-9050
Price
Ionization Method(s)MALDIMALDIMALDIESI, APCI, DUIS, MicroESI, APCI, DUIS, Micro
Mass AnalyzerTOFTOFTOFQuadrupole Time-of-Flight (Q-TOF)Quadrupole Time-of-Flight (Q-TOF)
Resolution180 to 200 kDa>5000 FWHM5000 FWHM in linear mode; 15000 FWHM in reflectron mode30,000 FWHMInquire
Scanning Speed15 sec/positionInquireInquireUp to 100 HzInquire
Mass Range0.01 to 1.5 Mda1 kDa to 500 kDa1 kDa to 500 kDam/z 10 to 40,000Inquire
DescriptionThe MegaTOF has been developed by optimizing the integration of a high-performance Shimadzu linear MALDI TOF mass spectrometer with a CovalX high-mass system, allowing outstanding detection of macromolecules up to 1,500 kDa.

Features
  • Ultrahigh sensitivity
  • Detects macromolecules up to 1,500,000 Da
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An affordable, robust option for laboratories requiring routine manual or automated analysis of a wide variety of sample classes, the AXIMA Assurance provides high-quality, rapid MALDI mass spectra and an array of software tools for data processing and reporting. Incorporating a variable repetition

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An affordable, robust option for routine sample analysis performed manually or automatically, the AXIMA Confidence offers reliable mass information and MS/MS-derived structural detail. A linear mode enables outstanding levels of analysis of high-molecular weight samples while the reflectron mode,

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The LCMS-9030 quadrupole time-of-fight (Q-TOF) mass spectrometer integrates the world’s fastest and most sensitive quadrupole technology with TOF architecture. A product of Shimadzu's engineering DNA, speed and effortless performance enable the LCMS-9030 to address qualitative and quantitative ... Read MoreThe LCMS-9050 quadrupole time-of-flight mass spectrometer inherits the world-class mass accuracy and stability of the LCMS-9030 while incorporating newly developed UFstabilization technology for simultaneous positive ion/negative ion analysis with high mass accuracy at even higher speeds. Ease of ... Read More
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