This document specifies a method for the direct determination of water in ethanol to be used as a blending component for petrol, as well as in automotive ethanol (E85) fuel. This method is applicable in the range 0,05 % (m/m) to 0,54 % (m/m). NOTE For the purposes of this document, the term % (m/m) is used to represent the mass fraction. WARNING Use of this document might 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 the user of this document to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.