pegasus4dThe LECO Pegasus 4D GCxGC-TOFMS system provides a snificant increase in chromatographic resolution for petroleum analyses across a wide volatility range.Product Details; Item Pegasus BTX GC-TOF Mass Spectrometer; Company LECO; Price Get Quote; Catalog Number Pegasus BTX; Quantity EA; Resolution >1100 at mz 219; Mass