LECO Corporation has released the Pegasus BT 4D, which offers enhanced sensitivity by coupling the benchtop Pegasus BT TOF mass spectrometer with the GCxGC thermal modulation system. Software and hardware features simplify quantitation, while also making GCxGC easy to use and understand. The StayClean® ion source eliminates the need for source cleaning, while a convenient benchtop package saves valuable space in the laboratory.