This standard BS EN 15769:2009 Ethanol as a blending component of petrol. Determination of appearance. Visual method is classified in these ICS categories:
71.080.60 Alcohols. Ethers
75.160.20 Liquid fuels
This European Standard specifies a procedure for the determination of appearance of ethanol by visual method. The method enables to determine colour and limpidity of ethanol. NOTE Automotive fuel standards require a fuel to be clear and bright, meaning absent of particles, respectively absent of haziness. For this document that requirement is combined into a limpidity requirement.