pegasus 4dComprehensive Two-Dimensional Gas Chromatography with Time-of-Flht Mass Spectrometer GCxGC, combined with the Pegasus HT-C TOFMS, changes the dynamic when analyzingThe LECO Pegasus 4D GCxGC-TOFMS system provides a snificant increase in chromatographic resolution for petroleum analyses across a wide volatility range.