This document specifies a titrimetric method for the determination of acid value in light coloured Fatty Acid Methyl Esters, hereinafter referred as FAME. It allows the determination of acid value within a range of 0,10 mg KOH/g to 1,00 mg KOH/g. NOTE For the purposes of this document, the terms % (m/m) and % (V/V) are used to represent respectively the mass fraction and the volume fraction. WARNING The use of this document can involve hazardous materials, operations and equipment. This document does not purport to address all of the safety problems associated with its use. It is the responsibility of users of this document to take appropriate measures to ensure the safety and health of personnel prior to the application of the standard, and to determine the applicability of any other restrictions for this purpose.