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47
• Immerse the pH electrode and the temperature probe approximately 4 cm (1.5”) into a buffer
solution of your choice (pH 1.68, 3.00, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45 or a custom
buffer) and stir gently. The temperature probe should be close to the pH electrode.
• Select the pH calibration buffer used with
or . The “Please
wait...” message will appear on the LCD until the reading is stable or the
buffer is validated.
• If the pH buffer is validated, will appear on the LCD. Press
to update calibration. The calibration buffer will be added to the Calibrated
Buffers section.
• Immerse the pH electrode and the temperature probe into the next buffer solution and follow the
above procedure or press to exit calibration.
Notes: The new added calibration point will replace
an old one if the difference between them is
±0.2 pH.
If the existing stored calibration is full (five calibration
points), a pop-up menu will be displayed on the LCD
in which you can select with or
keys the buffer you want to replace with the current
buffer. Press to delete the selected buffer
and then press to update calibration with
the new buffer.
pH CALIBRATION
• If using manual temperature, after selecting the standard buffer, press . A pop-up menu
will be displayed on the LCD in which the temperature
value can be adjusted using or .
Press to save the new temperature value.
• If using Custom buffers, press
after buffer
has been accepted to change actual buffer conditions.
A pop-up menu will be displayed on the LCD in which
the custom buffer and the temperature value (MTC)
can be adjusted by pressing and then
or keys. Press to save
the modified value and then
/ to
select next/previous value to be adjusted.
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