LaMotte AST Series Professional Soil Test Outfits - Manual (Page 13)

EXTRACTION
The following procedures are used to extract the soil filtrate needed for
the Nitrate Nitrogen, Phosphorus, Potassium, Calcium, Magnesium,
Ammonia Nitrogen, Nitrite Nitrogen, Copper, Manganese, Iron, and
Aluminum tests. Separate extraction procedures are used for the
Chloride, Sulfur, pH, and Humus tests. Consult the LaMotte Soil
Handbook (Code 1504) for information on sampling and preparation of
soil for testing.
*Acid Extracting Solution (6361) is used to prepare Melich 1 extracting
solution. After dilution (performed during the extraction procedure) the
resulting solution is 0.05N Hydrochloric Acid and 0.025N Sulfuric
Acid.
NOTE: The Single Test Procedure will provide sufficient extract to do
one of each of the tests in the Model AST-5 (5410). The Multiple Test
Procedure should be used with the AST-15 (5412-01).
QUANTITY CONTENTS CODE
500 mL *Acid Extracting Solution *6361-L
60 mL Charcoal Suspension 5638-H
100 Filter Papers 0465
1 Funnel 0459
1 Pipet, 1.0 mL, plastic 0354
1 Test Tube, 5-10-15 mL, plastic, w/cap 0701
1 Spoon, 1 g, plastic 0697
1 Graduated Cylinder, glass, 100 mL 0419
1 Bottle, glass, 100 mL, w/cap 0990
1 Spoon, 0.5 g 0698
*WARNING: Reagents marked with an * are considered to be potential health
hazards. To view or print a Material Safety Data Sheet (MSDS) for these
reagents go to www.lamotte.com. To obtain a printed copy, contact LaMotte by
e-mail, phone or fax.
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