Analytical device for measuring the ethanol concentration in beer based on NIR absorption
Beer analysis is important for improving product quality and production control. It is predominantly based on wet-chemical analytical techniques. Here an alternative is presented: a near infrared analyzer - the Alcolyzer - for the rapid measurement of the ethanol concentration in beer.
The simple, fast and accurate determination of alcohol content in beers is very important for beer fermentation, quality assessment, trading and even consumption. Traditional analysis methods such as distillation or GC are time consuming and require experienced operators. Simpler methods such as the combined density and refractive index method or boiling point determination (Ebulliometer) tend to be inaccurate, because the underlying measuring properties are non-specific to alcohol.....
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