Iron Instructions

1.     Fill extraction tube to 7 ml with universal extracting solution.

2.     Use the plastic soil measure to add 1 level measures of the soil sample. Cap and shake for one minute.

3.     Use filter paper and plastic funnel to filter soil into another extraction tube.

4.     Label the extraction tube.

5.     Make sure this is done for all 10 soil samples.

6.     To perform iron test use a chemical testing kit. Click on this link for a list of materials that you will need.

7.     Put four drops of general soil extract to one of the larger depressions on a spot plate.

8.     Use .05 gram spoon to add one level measure of iron reagent powder and mix.

9.     Add one drop of Ferric iron test solution and mix.

10.   Match resulting color with the ferric iron color chart.

11.   Make sure the data is in pounds per acre.

12.   Repeat these steps for all the soil samples.