Ethanol

Ethanol production has increased dramatically in last decade In the analysis of alcoholic beverages, the alcohol content is the most important parameter that has to be measured accurately. The general requirement in the EU for ethanol quantitation is an error of ±0.3 vol-%. Ethanol is also used as an additive in fuels, as an industrial solvent and disinfectant. A growing need for ethanol measurements comes from bioethanol production. World ethanol production for transport fuel tripled between 2000 and 2007 from 17 billion to more than 52 billion liters. For these reasons a fast, accurate and non-destructive analysis of ethanol mixtures is required. NIR spectroscopy is an increasingly convenient method for ethanol quantitation. Coupled with a temperature measurement or temperature-stabilized sample cell, this technology is simple to integrate into process and handheld portable analyzers.