pegasus4dThe Pegasus BT 4D is a benchtop instrument that combines GCxGC modulation with a TOF mass spectrometer for enhanced sensitivity and resolution. It features ChromaTOF software,No 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