This European Standard specifies a gas chromatographic method using column switching for the quantitative determination of individual organic oxygenate compounds in the range 0,17 % (m/m) to 15 % (m/m) and total organically bound oxygen up 3,7 % (m/m) in unleaded petrol having a final boiling point not greater than 220° C. NOTE 1: The final boiling point can be measured by using prEN ISO 3405:1998. NOTE 2: For the purposes of this European Standard, the terms "% (m/m)" and "% (V/V)" are used to represent respectively the mass fraction and the volume fraction.