MALDI TOF mass spectrometers (matrix-assisted laser desorption/ionization/time-of-flight) are amongst the most popular mass spec instruments in biology. They combine two technologies, the “soft” MALDI ionization source and the TOF mass analyzer. The latter measures an ion’s mass-to-charge ratio (m/z) by measuring the time it takes to reach a detector. The former volatilizes and ionizes those molecules using a laser, a target, and an organic compound called a matrix. In MALDI, a sample (for instance, a collection of tryptic peptides) is mixed with matrix, spotted and dried (crystallized) on the surface of a metal target plate. Upon irradiation with laser light, the matrix absorbs the energy and converts it to heat, which then causes the sample to ionize and explode off the plate into the mass analyzer. MALDI TOF mass spectrometers come in two basic flavors, MALDI TOF MS and MALDI TOF/TOF MS; the latter enables tandem MS (MS/MS) studies.
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| Company | Shimadzu | Shimadzu | Shimadzu |
| Item | Axima Confidence MALDI TOF Mass Spectrometer | iMScope QT Imaging Mass Microscope | OmegaTOF Benchtop High Mass MALDI-TOF Mass Spectrometer |
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| Figures | | | |
| Catalog Number | Axima Confidence | iMScope QT | OmegaTOF |
| Price | | | |
| Ionization Method(s) | MALDI | Atmospheric Pressure MALDI (AP-MALDI) | MALDI |
| Mass Analyzer | TOF | Q-TOF | Time-of-Flight |
| Resolution | 5000 FWHM in linear mode; 15000 FWHM in reflectron mode | Inquire | >5000 FWHM – ACTH 18-39 (m/z 2465) |
| Scanning Speed | Inquire | Inquire | Inquire |
| Mass Range | 1 kDa to 500 kDa | Inquire | m/z 1,000–1,500,000Da |
| Description | 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, 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, incorporating the patented, newly improved curved-field reflectron, provides high resolution and mass accuracy. Features: High Sensitivity/Resolution
A variable repetition rate 50 Hz N2 laser and advanced ion optics for enhanced ion transmission enable users to meet all sample throughput requirements. Pulsed extraction of ions from the MALDI source, in combination with the unique reflectron design, improves resolution, and enhanced calibration algorithms with easy-to-use software provide more accurate data. Easily Perform MS/MS
A seamless approach isolates ions of interest, and data-rich fragment ion spectra are quickly and simply acquired. The curved field reflectron design augments the low mass fragment region to provide additional information. Positive and Negative Ion Modes Included as Standard
Allows greater flexibility and extends the compound categories that may be analyzed. Patented Beam Blanker
Removes unwanted low mass ions and prevents detector saturation. Unparalleled Flexibility
A variety of sample target formats, including standard microtiter plate format 96 or 384 well targets, can be used. In addition, Fleximass™ microscope slides (plain or 48 well targets) and a wide variety of adaptors for unconventional sample layouts are available.
Like all AXIMA MALDI-TOF systems, the AXIMA Confidence can be fully integrated with robotic sample preparation devices, including the AccuSpot MALDI plate spotter and CHIP chemical printer, to create application-specific platforms. Integration with the CHIP creates a powerful platform for tissue imaging, while using an AXIMA instrument with a Prominence GPC system and AccuSpot results in a fully automated platform for polymer analysis that delivers quick, detailed analysis of ultra-trace substances. ... Read More | Inquire | The OmegaTOF system couples Shimadzu’s benchtop MALDI-TOF instrument platform (MALDI-8020) with established technology for high mass detection from CovalX Instruments Inc. The result is a user-friendly, compact platform that extends benchtop MALDI-TOF analysis to a mass range of 1.5 MegaDalton.
TheThe OmegaTOF system couples Shimadzu’s benchtop MALDI-TOF instrument platform (MALDI-8020) with established technology for high mass detection from CovalX Instruments Inc. The result is a user-friendly, compact platform that extends benchtop MALDI-TOF analysis to a mass range of 1.5 MegaDalton.
The high mass detection capabilities of the OmegaTOF allow the highest sensitivity for analyzing large biomolecules, protein interactions, peptides, oligonucleotides and polymers. This allows access to a full range of applications already developed and optimized by CovalX technologies, most notably characterizing monoclonal antibodies, such as IgG, IgA and IgM. Crosslinking chemistries developed by CovalX enable the OmegaTOF to measure intact protein interactions directly, providing insight into protein aggregation, mAb:antigen interactions, protein complex stoichiometry or ligand association/dissociation measurements.
The OmegaTOF offers: - 200 Hz solid-state 355 nm laser featuring a class-leading two billion shots per lifetime
- Fast sample introduction using a load-lock chamber and quick sample stage movement
- Integrated barcode reader
- Patented TrueClean™ source cleaning
WideBore™ ion optics technologies that significantly reduce contamination from desorbed MALDI samples - Ease-of-use
- Low maintenance
- Small footprint
- Quiet operation at <55 dB
OmegaTOF data can be directly imported into the latest versions of CovalX ComplexTracker software for protein interaction analysis. Tailored MALDI Solutions acquisition software features data security for regulatory compliance facilitated with password-controlled user login, encrypted data, and user traceability. ... Read More |
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