High temperature simulated distillation of crude samples does not yield a complete and accurate boiling point distribution. The reason is that the front-end distribution is distorted by the quenching effect of the carbon disulfide (CS2) which co-elutes with the light components present in the crude sample. For many years, users of SimDis Expert have overcome this problem by using a built-in tool that merges the distillation data generated by detailed hydrocarbon analysis with the data generated by simulated distillation. The result obtained by merging the two distillation curves is a boiling point distribution that better resembles the TBP.

This merging tool is now available as a free stand alone application called Merge Expert.