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CFM

• When the reading is stable and close to the selected buffer,

“READY” message will appear and “CFM” message will blink.

• Press CFM to confirm calibration.

• The calibrated value is then displayed on the

primary LCD and the secondary LCD will display

the second expected buffer value.

• After the first calibration point is confirmed,

submerse the pH electrode and the tem-

perature probe approximately 3 cm (1¼”) into

the second buffer solution and stir gently. The

temperature probe should be close to the pH

electrode.

• If necessary, press the ARROW keys to select a different buffer value.

Note: The instruments will automatically skip the buffer used for the

first point. It also skips 6.86 if 7.01 buffer was used and vice versa.

Likewise, it will skip 9.18 if 10.01 buffer was used and vice versa.

• The “ ” symbol will blink on the LCD until the reading is stable.

• When the reading is stable, “READY” message will appear and

“CFM” message will blink.

• Press CFM to confirm calibration. The instrument will return to

measurement mode.

Notes: • To clear previous calibration data enter calibration mode,

press and hold down CFM, then press CAL. The display will show

“CLR” and then return to measurement mode.

• If the value measured by the meter is not close to the

selected buffer, “WRONG ” and “WRONG ” messages will

blink alternately. In this case check if the correct buffer has been

used, or regenerate the electrode by following the cleaning

procedure (see page 18). If necessary, change the buffer or the

electrode.

Hanna Instruments HI2210 User Manual

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