50 Litmus Strips & Color Comparison Chart. Simple and inexpensive method to roughly measure the pH of your water. Includes instructions on adjusting pH with household ingredients. The most inexpensive way to test pH. pH Test Strips Kit You will find that growing microgreens is much easier, and your greens will be healthier if you use pH-balanced water. Most municipal tap water has a pH over 7. Your microgreens thrive with water that is slightly acidic (around pH of 6.0-6.5). These test strips will help you get a rough sense of the pH of your water so you can take steps to bring it to an ideal pH. The test strip kit includes: 50 pH Test Strips - 50 litmus strips. Includes pH color comparison chart. Instructions: Step-by-step guidance on measuring and adjusting the pH of your water using household materials such as lemon juice or baking soda. Note: This pH test strip kit is included in every microgreens growing kit. If you are looking for professional-grade pH measurement and adjustment, we recommend the pH Balancing Kit. Instructions for Use Fill a container with a gallon of water. Filtered water is ideal, as it removes some of the chlorine from your tap water. Dip a litmus strip in the water and remove. Compare the color of the litmus strip to the color key sheet on the card to determine the pH of your tap water. Your target pH is around 6.0- 7.0. If your pH is above 6, use a mild household acid, such as lemon juice or vinegar, to lower it. Add 1/2 tsp of household acid to the gallon of water and stir thoroughly. Re-measure your pH. Add more household acid if the pH is still too high. If your pH is below 6, use a mild household base to raise it. Try using part of a crushed antacid tablet or using a small amount of baking soda - only a pinch at a time.