|
|
| 1. In a cup or beaker, measure
the pH of the distilled water you will be
using. Dip the pH paper or calibrated pen
or meter, into the water and obtain a reading. |
|
 |
| 2. In another cup or beaker, mix
40 g of dried and sieved soil with 40 mL of distilled
water (or other amount in a 1:1 soil to water ratio)
using a spoon or other utensil to transfer the soil.
Stir with a spoon or other stirrer until the soil
and water are thoroughly mixed. |
|
|
| 3. Stir the soil-water mixture for
30 seconds every 3 minutes for a total of five stirring/waiting
cycles. Then, allow the mixture to settle until
a supernatant (clearer liquid above the settled
soil) forms (about 5 minutes). |
| 4. Measure the pH of the supernatant
using the pH paper, pen, or meter. |
Place the bottom of
the pH pen in the Supernatant
(clearer liquid above the settled soil).
The
pH of this soil is 6.5
|
|
 |
|
|
| 5. Repeat steps 1-4 for each sample
from each soil horizon, and record your results
on the Soil pH Data Worksheet. |
|
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