High Resolution TOFMS

Developed to withstand the rigor of modern high performance analytical demands, the Pegasus GC-HRT provides the ultimate high-performance MS capabilities. These capabilities include industry leading mass accuracy, full mass range acquisition with exceptional speed, isotopic abundance and mass resolution, all available within 1 injection.

LECO's own Folded Flight Path® (FFP®) technology and novel data acquisition system enables resolution of 50,000 FWHM, mass accuracies less than 1 ppm, and acquisition rates up to 200 spectra/second—all with the goal to facilitate rich analyte finding and high-confidence analyte identification.

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Pegasus GC-HRT Brochure

GC-TOFMS Technology Overview Brochure

Metabolomics Brochure


  • Encoded Frequent Pushing™ (EFP™) technology greatly expands the analytical capabilities of LECO’s GC-HRT and GCxGC-HRT instruments, contributing to a significant increase of sensitivity, expanded dynamic range, wide mass range, and much more. Read more about EFP technology by downloading this Technical Brief.
  • The FFP not only provides high resolution and sensitivity, but also provides higher orders of TOF focusing which prevents standard TOF dispersion and allows for broader initial conditions.
  • Harness the power of accurate mass and high resolution mass spectrometry with SAT. This innovative toolkit, paired with ChromaTOF brand software, is designed to streamline identification and relative quantitation of heteroatomics species in either GC or GCxGC data sets. Learn more here.
  • KADAS our patented ion statistics based data acquisition system dramatically reduces noise, ensures mass accuracy and reduces file size.
  • High Resolution Deconvolution™ (HRD™) deconvolutes and identifies important analytes in complex matrices.
  • What else is in your sample? In cases where ambiguity exists, Ultra High Resolution mode combined with HRD will pull apart highly isobaric ions (mass differences ~ 0.02 amu). 


Chemical Ionization Source

Save time and effort in your laboratory by more easily identifying unknowns and having more confidence in your library hits. The chemical ionization (HR-CI) source for the Pegasus GC-HRT allows users to dramatically change their high resolution GC/MS information with never before seen mass accuracy and resolution on pseudo-molecular ions. The Pegasus GC-HRT is available with both electron ionization (EI) and chemical ionization (CI) sources, providing the option of comparison with classic library spectra (EI), and preservation of the molecular ion (CI). Together, the HR-CI source and the Pegasus GC-HRT provide a complete package for high-throughput/high-information content analysis, with resolution up to 50,000 FWHM, mass accuracies less than 1 ppm, and acquisition rates up to 200 spectra/second—all with high-integrity isotopic abundance measurements to facilitate rich information content and high-confidence analyte identification.

Click here to view our Technical Brief on Mass Accuracy

CI Confirm sm


CI Identify sm




Add-On Products
Below you will find various products and accessories that have been integrated into our Separation Science product line to give you the most powerful tools available on the market. 

Liquid & Gas Chromatography
Liquid and gas chromatography featuring the 7890 GC and the 1200 Series UHPLC system. Various inlets and injectors are also available.


Sample Preparation & Automation
Sample preparation and automation solutions for GC and GC/MS designed to optimize performance, enhance productivity, and extend capabilities. Solutions include Liquid/Headspace/SPME injections, Thermal Desorption, and Automated Liner EXchange (ALEX).


Nitrogen Generators

Nitrogen generators that operate on house air or a built-in compressor.