Agilent Technologies G3180B - Manual (Page 11)

Introduction 1
Installation and Operation Guide 11
Calculation of chromatographic parameters
Because the pressure at the split point is known and constant, the
chromatographic parameters can be calculated before setup. This is especially
useful with GC/MSD setups, where there are limitations on the flow rates of
carrier gas allowed into the MSD. If a method that was originally developed on
an MSD is converted to a splitter setup, a new inlet pressure can be calculated
to produce retention times very similar to the original method.