LaMotte SMART3 Soil Operator's Manual page 81

1.800.544.2843
 EXTRACTION PROCEDURE
The following method of extraction is employed for obtaining the soil fi ltrate for the
tests for Nitrate Nitrogen, Phosphorous, Potassium, Calcium, Magnesium, Ammonia
Nitrogen, Nitrite Nitrogen, Manganese, Copper, Zinc, and Iron. Separate extractions are
required for the Chloride and Sulfate tests. Consult the LaMotte Soil Handbook (1504)
for information on sampling and preparation of sample for testing.
MULTIPLE TEST PROCEDURE
1. Use the 1 mL pipet (0354) to add 5 mL of *Acid Extracting Solution (6361) to the
100 mL graduated cylinder (0419). Add deionized water to 75 mL graduation.
2. Pour this solution into the 100 mL bottle (0990).
3. Use the Soil Measure (1165) to add 15 g (one level measure) of the soil sample to
the bottle.
4. Cap the bottle and shake for 5 minutes.
5. Use the funnel (0459) and fi lter paper (0463) to fi lter and collect all of the soil
extract in a 100 mL bottle (0990).
6. The soil extract is used for all of the tests listed above, except Chloride and
Sulfate.
SINGLE TEST PROCEDURE
1. Use the 1 mL pipet (0354) to add 1 mL of *Acid Extracting Solution (6361) to the
test tube (0701), then add deionized water to fi ll to the 15 mL line.
2. Use the 1.0 g spoon (0697) to add 3 measures of soil to the extracting solution in
the test tube.
3. Cap the tube and shake for 5 minutes.
4. Filter, using the funnel (0459) and fi lter paper (0463) and collect all of the soil
extract.
5. The soil extract is used for all of the tests listed above except Chloride and
Sulfate.
SMART3 Soil Colorimeter 9.18
www.calcert.com
15
10 20
5 25
0 30
83
sales@calcert.com