pegasus 4dComprehensive Two-Dimensional Gas Chromatography with Time-of-Flht Mass Spectrometer. GCxGC, combined with the Pegasus HT TOFMS, changes the perspective of complex sampleGCxGC, combined with the Pegasus HT TOFMS, changes the perspective of complex sample analysis. No longer limited to two analytical dimensions, the Pegasus 4D GCxGC-TOFMS