Changing The Ph Buffer Group - LaMotte pHPLUS DIRECT 2 Manual

3.1.2 Changing the pH Buffer Group

The meter can be calibrated with pH standards of USA, NIST (nSt) or
Low Ionic (Pb) pH buff er groups. The factory default is the USA buff er
group. To abort the buff er group selection, press CAL to revert to the pH
measurement mode.
1. Power off the meter while in pH mode. Press and hold MODE
then press ON/OFF. If successful, "bUF" will blink on the
display. Release both keys.
2. Press HOLD/ENTER to enter the buff er group selection mode.
3. Press MODE to toggle between the available pH buff er groups.
4. Press HOLD/ENTER to confi rm the pH buff er group. Note: if
Pb is selected, measurement mode will begin. If USA or nSt is
selected, proceed to step 5.
5. Press MODE to toggle between the desired number of calibration
points (Pt). Note: During pH calibration mode, the meter will
automatically complete calibration after the number of points
selected here has been completed.
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6. Press HOLD/ENTER to confi rm the number of calibration
points. The meter will automatically begin the measurement
mode.
Note: To abort the buff er group selection or go back one step,
press CAL.
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