Potassium Test

Chart for Reference

In order to find the potassium levels of our soil sample, we added 2 grams of soil to a test tube of potassium extracting solution. We shook the mixture for one minute and then let it settle. Then, we extracted the liquid from the test tube and put it into a second test tube. In the second test tube we added one potassium indicating tablet. We mixed the solution until the tablet dissolved and was a purplish color. We continued to add 14 potassium test solution drops until the color changed to blue. Based on the chart provided, our soil sample's potassium level was medium. Although this seemed to result in healthy plants in the area, maybe higher levels would result in even healthier plants.

Finished Experiment