How to test pH of Kombucha with a pH strip Fill a beaker or glass with the sample of the kombucha you are testing. Testing Kombucha pH With Test Strips. Lots of commercial kombucha brewing companies use pH as a tool to do exactly that, to make sure their brew is fermenting safely. The following inexpensive PH 1-14 test paper Litmus Strips… Do I need pH Strips for kombucha? Finished kombucha typically falls within a range of 2.5 - 3.5. There are different ways to test your kombucha’s pH level; however, the simplest way is to use a paper strip coated in a pH indicating dye. The range typically is from 1 to 14. But those are just estimates. A second later, take out the paper and using the color chart included, Compare the color change of the paper to find out the acidity level of your kombucha. We used to call it litmus paper in high school science class… but you will need something a lot more accurate to measure the exact level of acidity in your kombucha. Should I use a pH meter or test strips? Take a pH strip … Your own brew may be different, but it shouldn’t be drastically far from that range. You can purchase pH Test Strips … If you're brewing kombucha using an all-in-one kit often, they'll add litmus paper which will contain roughly 100 strips and colors with the corresponding pH … Your glass must be extremely clean and free of any dirt or other contaminants that may influence the test result. Easy to use pH test strips - Range 0.5 - 5.0pH, simply: Place the testing strip into the kombucha you are testing (or a spoonful of it).