The analysis aims to obtain quantitative characteristics (concentration, peak areas or heights) of the n-alkanes and characteristic aromatic compounds in the saturated and aromatic fraction of oils respectively. Internal standard is used for quantitation.

The analysis is performed in an HP 5890 gas chromatograph, with a Flame ionization detector. Requires oil or extract concentration and fractionation using GE_405, GE-407 and GE_408.