horiba F-74BW, Инструкция по эксплуатации

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Chapter 3 Basic Operation
3.3 Calibration
F-74BW 53
8.
Wash the pH electrode with pure water (deionized),
and wipe it off by filter paper or tissue paper.
9.
Immerse the pH electrode in the standard solution
of pH4 to calibrate the second point.
10.
Press the
▲
or
▼
key to set the value of the
random standard solution.
11.
Press the CAL key to display the instantaneous
value. Wait for the instantaneous value to be stable
and press the CAL key.
The HOLD indicator blinks until the reading
stabilizes. When the reading stabilizes, the HOLD
indicator lights up and the reading is held.
The mark, which means that the second point
calibration is completed, is displayed on the screen.
12.
As for calibration of the third and later points,
perform the calibration from the step 7.
13.
When the calibration is completed, press the MEAS
key to return to the measurement mode.