LaMotte SOIL pH KIT B - Manual (Page 2)

SOIL pH TEST
1. Use the plastic test tube cap as a measure to place 1 1/2
measures (capfuls) of prepared soil into a test tube (0755).
2. Add pH Indicator Solution (5701DR) to the 4 mL line on
the test tube.
3. Cap the test tube and shake to mix the contents (30
seconds).
4. Allow the soil to settle and the color to develop in the
liquid above the soil.
5. Match the color in the test tube to the colors shown on the
pH Color Chart.
6. Record the reading which represents the nearest color
match between the color in the tube and the colors on the
chart.
7. This is the pH value of your soil.
8. Note if an adjustment in pH value is necessary for plants to
be grown in your soil.
To adjust the soil pH to favor the plants you select to grow, refer
to the plant preference list and determine to which group these
plants belong. Then, consult the lime-alum tables and determine
any adjustment in soil reaction necessary to give the best results.
It is sometimes desired to make an on-the-spot check for soil
(pH) without previous preparation of a soil sample. This may be
done following the regular test procedure but avoiding soils with
an excessive amount of moisture. The resultant reading should
be checked later using the recommended procedure for a
prepared soil sample.
LaMOTTE COM PANY
Helping Peo ple Solve An a lyt i cal Challenges ®
PO Box 329 • Chestertown • Mary land • 21620 • USA
800-344-3100 • 410-778-3100 (Out side USA)
Visit us on the web at www.lamotte.com
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