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LECO product profile
Variable Modulation Times (VMT) for Pegasus® 4D GCxGC-TOFMS optimisation is a unique feature designed and implemented by LECO. Traditional GCxGC uses a fixed modulation period and can result in an analytical compromise to the 1st dimension separation. The advantage of VMT enables the operator to specify at the click of a button their own and different modulation times throughout the GCxGC run time. Typically, applications taking advantage of GCxGC separations focus on matrix heavy &/or complex samples containing a broad range of analytes. In such complex mixtures, early eluting and more volatile analytes actually require shorter modulation times whilst later eluting analytes (high boilers) require much longer modulation times. Using the new LECO VMT programming style results in graduated Pegasus 4D® GCxGC-TOFMS chromatograms in the 2nd dimension and so preserves the valuable separation in the first dimension. This feature maximizes resolution in both the first and second dimensions and is compatible with LECO’s traditional LN2 and Consumable Free (CF) Pegasus 4D® GCxGC-TOFMS instruments.
The newly implemented features are built on a history of dedication and continuous development ensuring LECO continues to provide the gold standard of GCxGC instrumentation, the Pegasus 4D® GCxGC-TOFMS. For more information contact the LECO Separation Science team.