DIN EN 15721:2009-07

This standard specifies a gas chromatographic method for ethanol, in which higher alcohols (1-propanol, 1-butanol, 2-butanol, 2-methyl-1-propanol, 2-methyl-1-butanol, and 3-methyl-1-butanol) up to 2,5 % (m/m), methanol up to 3 % (m/m) and other volatile impurities, especially ethyl acetate, acetic aldehyde and 1,1-diethoxyethane in the range up to 2 % (m/m) are determined. Due to possible interferences the method is not applicable to denatured ethanol samples. Two procedures (""Procedure A"" and ""Procedure B"") are specified which differ mainly in the optional use of a water dilution step prior to the analysis. Both variants have been validated to produce identical results and precision in extensive RR tests.