© PCE Instruments
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6.3
3-point calibration
6.3.1
The 3-point calibration must be selected in
the basic settings.
6.3.2
. Carry out the calibration of the first
calibration point as described under 6.1.2.
…
6.1.4.
The display shows "pH 4.01" and "CAL 2".
6.3.3
Rinse the electrode with distilled water
Immerse the electrode in the pH 4.01 buffer
solution with the end of the electrode completely
immersed in the calibration solution. Stir the
solution carefully with the electrode to obtain a
homogeneous solution.
6.4.4
Press the "ENTER" key.
The meter starts the calibration.
6.3.5
After the measured value has stabilised,
the display shows the slope of the electrode in
%, followed by "pH 10.01" (pH 9.18) and "Cal 3".
6.3.6
Rinse the electrode with distilled water
Immerse the electrode in the pH 10.01 (pH 9.18)
buffer solution with the end of the electrode
completely immersed in the calibration solution.
Gently stir the solution with the electrode to create
a homogeneous solution.
