Kmiotek, Stephen J.
The goal of this project was to determine a methodology to accurately measure the percent ethanol of the beverages produced by Wachusett Brewery. Based on gas chromatograph tests, it was determined that using propanol as an internal standard and a Chaney adaptor provided accurate results. In addition, using a vial with a septum cap prevented ethanol evaporation from the sample and 597 Qualitative Filter Paper decarbonized the beer without absorbing ethanol. From the developed methodology using a gas chromatograph, Wachusett IPA was determined to be 5.2% ABV. Due to the multicomponent nature of beer, a density measurement, provided by a hydrometer and digital density meter, was not an accurate method to determine alcohol percent in Wachusett Brewery’s beverages.
Worcester Polytechnic Institute
Major Qualifying Project
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