ArticleHome Lab Tests Does this look infected? Even if your beers tastes fine, it has some level of contamination. Learn how to find out if your beer is in the clear or if you're one pitch away from disaster.Already a member? Log InWritten by Chris ColbyYou'll Also Like Article MEMBERS ONLY Testing Your Hypothesis: Experiments you should do Homebrewing and experimenting are about as old as brewing itself . . . but modern scientific method delineates theories and proven facts. Denny and Drew provide some pointers. Article MEMBERS ONLY The Role of pH in Brewing pH plays a role in every step of the brewing process — from the time you mash in, all the way through to the final beer that fills the glass. Take a closer look at pH throughout the brewing process.