LaMotte Tracer 1741, Manual

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9. Always turn the meter off and then on before calibrating to allow
sufficient time to complete the calibrations during one power cycle. If
the meter auto powers off during calibration the calibrations remain
valid, but new calibrations will turn the circled indicators off.
Meter Reset
If the meter will not calibrate or displays a -1, reset the meter and attempt
to re-calibrate.
1. Turn off the meter.
2. Remove the battery cartridge from the top of the meter.
3. Press the ON/OFF button for 10 seconds to bleed off all charges
within the meter.
4. Re-insert the batteries and turn the meter on.
5. Follow the pH Calibration procedure.
pH Measurement
1. Place the electrode in the test sample.
2. Record the pH after the reading becomes stable and the display
stops flashing.
3. Press the ON/OFF button to turn the meter off. Rinse the electrode
with distilled water. Replace cap
pH Measurement of Soil
1. Place a 1:1 ratio of soil and distilled water in a small beaker. For most
analyses, 20 grams of soil and 20 grams distilled water are sufficient.
2. Wait 15 minutes. Stir occasionally with a stirring rod.
3. Stir the sample. Immediately place the electrode in the sample.
4. Wait until the display stabilizes. Record the pH.
5. Rinse the electrode in distilled water. Replace cap.
NOTE: The flat surface electrode will allow for readings directly from the soil
if there is enough moisture present in the soil.
Storing Readings
1. After the reading is made press the
MODE button to store the current
reading The storage location number
will be displayed followed by the
reading being stored.
H T 4
HOLD
pH
10.04
°F
78.6
4