pegasus4dThe Pegasus 4D GCxGC-TOFMS is a Comprehensive Two-Dimensional Gas Chromatography with Time-of-Flht Mass Spectrometer. GCxGC, combined with the Pegasus HT TOFMS, changes the dynamic when analyzing complexNo longer limited to two analytical dimensions, the Pegasus 4D GC×GC-TOFMS system (LECO, St. Joseph, Michan, USA) provides us with four dimensions of analytical resolution