This method is for determining the isomer distribution in C18through C20 mono-substituted linear alkylbenzenes.6-Phenyltridecane and 7-phenyltridecane isomers are not resolvedfrom each other and are determined as a composite. The lower limitof detection for a single component is 0.1 mass-%.
Components other than linear alkylbenzenes are not determined bythis method.