1.1 ,This test method covers the quantitative determination of the carbon number distribution of petroleum waxes in the range from n-C₁₇ through n-C₄₄ by gas chromatography using internal standardization. In addition, the content of normal and non-normal hydrocarbons for each carbon number is also determined. Material with a carbon number above n -C₄₄ is determined by its difference from 100 ,% by mass and reported as C₄₅₊.