Big QC Day

Big QC Day began in 2007 as a way to provide a low-cost option for breweries to get a variety of tests conducted. Each year, at least 10 percent of the country's craft breweries participate. Big QC Day kits test for diacetyl and IBUs, as well as alcohol, calories, color, real and apparent attenuation, microbiological contaminants, and more. Test two samples for $139 or $199 for two samples plus gluten testing.


Purchase your kit anytime between now and July 29 and we'll get results to you by Aug. 5. 

To purchase your Big QC Day kit, please visit, click the Laboratory Supplies and Services tab, and the item is located in the top section called Laboratory Services. Or call 1-888-5-YEAST-5 or email for more information and assistance.