10
LaMotte TRACER pH PockeTester
TM
1741 Instruction
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
fl ashing.
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 suffi cient.
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 fl at 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.
2. Press the MODE button to return to
normal operation.
3. Repeat step 1 to store the next reading.
4. If an attempt is made to store more than 15 readings, the stored readings
(starting with the fi rst reading) will be overwritten.
H
T
4
HOLD
pH
10.04
°F
78.6
4