14
LaMotte TRACER pH/TDS/Salt PockeTester
TM
1766-KIT-01 Instruction
CALIBRATION
For the most accurate results, allow suf
fi
cient time for the temperature of
the probe to reach the temperature of the sample before calibrating. This
will be indicated by a stable temperature reading on the display.
pH Calibration
For the most accurate results, calibrate the TRACER with a pH 7 buffer
tablet.
Preparation of Buffers
1. Fill a sample cup with 20 mL of distilled or deionized water.
2. Add one buffer tablet:
pH 7.0
Code 3984A
3. Use the tablet crusher (0175) to crush the tablet. Stir until the tablet
has disintegrated.
NOTE: Buffers should be prepared fresh daily.
Calibration
1. Fill a sample cup to the 20 mL line with a buffer solution.
2. Press the ON/OFF button to turn the TRACER ON.
3. Place the electrode in the buffer solution. Press and hold the CAL/
RECALL button until “CAL” appears in the lower display. The
meter will automatically recognize the buffer and calibrate itself to
that value. The circled number on the display will match the value of
the buffer.
NOTE: If the buffer solution is more than 1 pH unit off from 7, the
electrode slope is low,the meter will assume that there is an error and
the calibration will be terminated. CAL and END will be displayed.
4. During the calibration the pH value on the display will
fl
ash. When
the calibration is complete, the TRACER will display “SA” and
“End” and return to normal operation.
5. The appropriately circled indicator (L, M or H) will appear on the
display when a calibration has been completed within one power on
cycle.
6. When the TRACER is turned off, the circled indicator con
fi
guration
and the calibration data will be memorized.
