17
pH CALIBRATION
• When the reading is stable and within range of the selected buffer, the CFM functional key is
displayed.
• Press CFM to confirm calibration.
• The calibrated value and the fifth expected buffer will be displayed.
• After the fourth calibration point is confirmed, immerse the pH electrode and the temperature
probe approximately 4 cm (1½”) into the fifth buffer solution and stir gently.
The temperature probe should be close to the pH electrode.
• If necessary, press the / keys to select a different buffer value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and within range of the selected buffer, the CFM functional key is
displayed.
• Press CFM to confirm calibration.
• The instrument stores the calibration values and returns to normal measurement mode.
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