1.1 ,This test method covers the determination of individual hydrocarbon components of spark-ignition engine fuels with boiling ranges up to 225 ,°,C. Other light liquid hydrocarbon mixtures typically encountered in petroleum refining operations, such as, blending stocks (naphthas, reformates, alkylates, and so forth) may also be analyzed, however, statistical data was obtained only with blended spark-ignition engine fuels. The tables in Annex A1 enumerate the components reported. Component concentrations are determined in the range from 0.10 ,% to 15 ,% by mass. The procedure may be applicable to higher and lower concentrations for the individual components, however, the user must verify the accuracy if the procedures are used for components with concentrations outside the specified ranges.