Measurement; Measuring The Tds Of Soil - LaMotte Tracer PockeTester Manual

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Measurement

1. Fill a sample cup to the 20 mL line with the test sample. Sample depth
must be greater than or equal to 1.5 inches.
2. Immerse the TRACER electrode in the sample. Make sure the electrode is
completely submersed.
3. Press the ON/OFF button. (8888 and then SELF CAL
will appear in the display during the initial diagnos-
tics).
4. Press and hold the MODE button to scroll to the
desired measurement mode.
5. Insert the electrode into the sample making sure
that the electrodes are completely submerged.
6. Slowly stir the sample with the TRACER to
remove air bubbles.
7. The meter will autorange to the proper range and the
reading will be displayed.
8. Rinse the electrode in distilled water. Replace the cap.

Measuring the TDS of Soil

1. Fill a 50 mL beaker with the soil
sample. Tap the beaker lightly
on a hard surface to remove
trapped air. Remove excess soil
from the surface.
2. Empty the soil into a 250 mL
wide-mouth fl ask.
3. Add 100 mL of distilled water.
Stopper and shake vigorously.
4. Wait 30 minute. (Shake the fl ask
vigorously three or four times
during this period.)
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MODE
CAL
ON
OFF
SAL/EC/TDS
4.01
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