12
Measuring the pH of Soil
1. Place a 1:1 ratio of soil and distilled water in a small beaker. For most
analyses, 20 grams of soil and 20 grams distilled water are sufficient.
2. Wait 15 minutes. Stir occasionally with a stirring rod.
3. Stir the sample. Immediately place the electrode in the sample.
4. Wait until the display stabilizes. Record the pH.
5. Rinse the electrode in distilled water. Replace cap.
NOTE: The flat surface electrode will allow for readings directly from the soil
if there is enough moisture present in the soil.