LaMotte LIME REQUIREMENT OF SLUDGE APPLIED SOILS LS - Manual (Page 4)

PRO CE DURE
NOTE:
A suitable digital or analog pH meter with glass electrode is
needed to perform this test (not supplied with reagent tray).
1.
Use the 10g plastic soil measure (1164) to add one level measure of
soil to the 50 mL beaker (0944). Fill the graduated cylinder to the
10 mL line with deionized water from the demineralizer bottle
(1152). Pour into the beaker. Stir thoroughly.
2. Let stand for at least 15 minutes.
3. Use the graduated cylinder (0416) to add 20 mL (two full
measures) of Woodruff Buffer (5772). Mix well. Let stand for at
least 20 minutes, stirring two or three times.
4. Determine the pH using a glass electrode pH meter. Stir mixture
while making the reading.
5. Each 0.1 pH unit drop from pH 7.0 indicates a lime requirement
equivalent to 1000 lbs. Calcium Carbonate (CaCO
3
) per acre.
LaMOTTE COM PANY
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PO Box 329 • Chestertown • Mary land • 21620 • USA
800-344-3100 • 410-778-3100 (Out side USA) • Fax 410-778-6394
Visit us on the web at www.lamotte.com
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