The Next Big Thing in GC-Mass Spectrometry is Here

Pegasus BTX

The BTX is the culmination of nearly 30 years of developing the ultimate TOF mass analyzer for GC and GCxGC applications.

See Everything, All the Time

Collect full mass range data, even when performing targeted analyses. Never miss another clue.

Sensitivity in Spades

Trace-level detection with helium or hydrogen carrier gases - no analytes escape detection.

Advanced Deconvolution Algorithms

Even in the densest of matrices, uncovering analytes is easier than ever with the help of clean spectra.

Say Farewell to Source Cleaning

Stay running with the StayClean® ion source, which requires no cleaning, even after sustained heavy matrix exposure.

Introducing New TOF Tech

The BTX is the latest generation of LECO’s Benchtop (or BT) GC-TOFMS series. For the past 8 years, the Pegasus BT series has proven reliability in labs performing unbiased, non-targeted analyses and tackling difficult matrices. A diverse spectrum of investigators—including those in industries like Petroleum, Life Sciences, Environmental, Pharmaceutical, Food Safety, and others—have gained deeper insights into the complex chemistries of their samples thanks to the incredible Pegasus BT.

From its predecessor, the Pegasus BTX retains the innovative StayClean® ion source, blinding fast full-spectrum acquisition rates, and 5 orders of linear dynamic range—all seamlessly orchestrated by ChromaTOF® software. A novel ion path and detector design delivers femtogram-level sensitivity in a miniscule footprint—analytes that previously eluded even advanced targeted GC-MS systems are unveiled with rich mass spectra. At LECO, technological innovations never jeopardize our commitment to instrument quality and robustness: that’s why all new BTX systems include a two-year detector warranty, as a testament to LECO’s investments in ion path integrity.

Pegasus BTX Specifications

Ionization Source	Electron Ionization (StayClean® Direct Extraction open style)
Detector	Scintillator - Photomultiplier Tube with extended lifetime
Mass Analyzer	Time-of-Flight Mass Analyzer with Dual Stage single Reflectron
Mass Range	10 - 1500 m/z
Mass Resolution	>1,100 at m/z 219
Spectral Acquisition Rate	1-500 spectra/second - up to 35,000 transients/second
Detection Limit (GC carrier gas - Helium)	10fg OFN with Quant S/N > 10
Detection Limit (GC carrier gas - Hydrogen)	10fg OFN with Quant S/N > 10
IDL	< 4fg for 8 replicates of 10fg OFN injected
Precision	< 5% RSD for 15 injections of 100fg OFN
Linear Dynamic Range	5 orders of magnitude

Download the Pegasus BTX Brochure

Working in omics applications, I really need instrument data that is sensitive as well as robust and offers the possibility to do non-targeted analysis. To be honest, so far, this is exactly what we get with the new Pegasus BTX. After testing food and biological matrices on it, I can see that the system is highly sensitive and providing all the added value of the GCxGC separation, which is perfect for my types of samples.

—Dr. Pierre-Hugues Stefanuto, Lead Scientist and Lecturer

University of Liège, Organic Biological Analytical Chemistry Group