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  • A combination of the highest performance GCxGC and TOF
  • Outstanding Resolution Power- Folded Flight Path™ (FFP)™ technology enables resolution of 50,000 FWHM.
  • HR-EI or HR-CI sources
  • Accurate Isotopic Abundances.
  • Automated peak finding and deconvolution. Increased Sensitivity.
  • Chemical Ionization Source (HR-CI) data has the same mass accuracy and high resolution on pseudo-molecular ions, which complements the traditional Electron Ionization Source
  • (HR-EI), to provide the comprehensive characterization of unknowns Exact Formula Calculation.
  • Automatic formula calculations and identifications linked to Mass Defect Plots.
  • Fast acquisition rates (up to 200 spectra/sec).
  • LECO’s exclusive ChromaTOF-HRT™ software, which utilizes True Signal Deconvolution for accurate peak.
  • Thermal modulation with liquid nitrogen or cryogen-free versions


LECO’s Pegasus GC-HRT 4D combines the highest performance Time-of-Flight mass spectrometer with industry leading GCxGC, giving analytical scientists the ability to identify components with more confidence, convert unknowns to real knowns, and find out what lse is in their sample. The Pegasus GC-HRT 4D takes advantage of four dimensions of separation and resolution. Capable of mass resolutions of up to 50,000 and acquisition rates up to 200 spectra/second. Folded Flight Path (FFP) provides high order TOF focusing which delivers high resolution sensitivity with two modes of operation (25k and 50k mass resolution) . KADAS – Patented acquisition system, which dramatically reduces noise, ensures mass accuracy, and reduces file size. System designed for very fast

acquisition rates needed to define narrow second dimension peaks. Our integrated all-in-one ChromaTOF-HRT brand software controls all hardware elements, automatically

calculates mass accuracies and identifies 2nd dimension peaks. With innovative features and functions based on our years of experience in GCxGC, the software is an exceptional tool to efficiently deliver maximum chemical information per sample. The combination of high-resolution front-end separation with high resolution time-of-flight mass spectrometry made possible the identification of compounds previously unknown in the samples.

The Workflow