本方法用于分析含氮/空气和二氧化碳的脱甲烷液态烃流，以及纯度产品，如乙烷/丙烷混合物，其含量在本标准规定的成分范围内。该方法仅限于含有小于5摩尔%庚烷和重馏分（20摩尔%己烷和重馏分）的混合物。

This method is intended for the analysis of demethanized liquid hydrocarbon streams containing nitrogen/air and carbon dioxide, and purity products such as ethane/propane mix that fall within compositional ranges indicated in the standard.This method is limited to mixtures containing less than 5 mole percent of heptanes and heavier fractions (20 mole percent of hexanes and heavier fractions).