Automated Determination of Chloride Concentration in Wort and Beer. J. S. Skowronski and D. J. Wedl, Miller Brewing Company, Milwaukee, Wisconsin 53201. J. Am. Soc. Brew. Chem. 40:0075, 1982.

The objective of this study was to evaluate an automated coulometric titration method for the determination of chloride (C1¯) and compare it to the results obtained with a potentiometric titration reference method. The coulometric titration method provided slightly higher chloride readings than found with the potentiometric procedure; however, the correlation coefficient between the two methods was 0.989 for wort and 0.994 for beer. Both methods provided excellent results, with the coulometric procedure requiring one third the time and being easier to perform. The coulometric method also required minimal instrument setup, standardization, and sample preparation and used very stable reagents.

Keywords: Automation, Beer, Chloride, Coulometric, Titration, Wort