Changing The Ph Buffer Group - Oakton pH 5 Instruction Manual

Instruction Manual
3. Press CAL to enter pH calibration mode. "CA" displays momentarily before the
display flashes the current un-calibrated reading.
4. To abort or cancel calibration without accepting the new value, press CAL key. The
meter will automatically revert to pH measurement mode.
5. Allow reading to stabilise if necessary. Press ENTER key to confirm calibration.
"CO" displays momentarily before reverting to pH measurement mode.
6. For highest accuracy, perform a multiple-point calibration. Repeat step 1 with
additional pH buffer calibration standard solutions.
3.1.2

Changing the pH Buffer Group

You can calibrate with pH standards of either USA, NIST (nSt) or Low Ionic (Pb) pH
buffer groups. The factory default is USA. To abort buffer group selection press CAL to
revert to pH measurement mode.
1. Press and hold MODE while switching the meter on using the ON/OFF key. The
display shows "bUF" blinking.
2. Press ENTER key to begin buffer group selection mode. Use the MODE key to
toggle between USA, NIST or Pb as shown below.
-8-
pH 5+, pH 6+, Ion 6+