Testing the PH of soil. Image credit blogspot.com
ZIMSEC O Level Combined Science Notes: Testing the alkalinity/acidity of the soil
Materials: Universal indicator/PH paper/PH Test meter, distilled water, test tubes, soil samples
Method
- Place the soil samples into test tubes to a height of about 2cm
- Add distilled water to the test tubes
- Add a few drops of universal indicator and shake well
- Leave the tube to stand until the solution is clear
- Read the PH of the universal indicator and compare it to the provided chart
- Alternatively you can dip the PH paper into the distilled water and soil mixture once it has settled
- You can also use a soil PH test meter by plunging the measuring end into the ground and reading the PH off the meter
Results
- Different soil samples have different PH levels
To access more topics go to the Combined Science Notes page.
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