pH Strips are a litmus paper style strip used to test pH. These particular strips are useful for the pH ranges typical of beer.
These pH strips are useful in determining the pH of your mash. A typical pH that brewers aim for is in the 5.2-5.5 range. The range of these strips is between 4.6 and 6.2, which is ideal for beer. Make sure your pH is spot on with these pH strips!