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Calibration of the 1st point
Calibration of the 2nd point
After the 1st point calibration is completed, perform the 2nd point calibration.
・For calibration using multiple standard solutions, continuously perform from one solution
to another. If returned to the MEAS screen once, you have to go back to the 1st point
calibration.
・When an error occurs in calibration, the screen displays the error. Remove the cause
and start the calibration from the beginning.
40
1.
Tap
to start calibration with the 1st
point.
The measurement value is displayed, and the
HOLD indicator blinks until the reading
stabilizes.
To stop calibration tap
indicator blinks.
The blinking interval of the HOLD indicator may
not be constant depending on the reading
stability level.
When the reading stabilizes, the value is held
and the progress bar shows that the pH7 calibra-
tion is completed.
2.
After the 1st point calibration is completed, tap
to proceed to the 2nd point calibration.
1.
Wash the pH electrode with pure water (ion
exchange water), and wipe it off by filter paper or
tissue paper.
2.
Immerse the pH electrode into a beaker of pH4
standard solution.
3.
Tap
to start calibration with the 2nd
point.
When calibration of the 2nd point is complete,
the calibration result is displayed on the screen.
4.
After checking the calibration result, tap
to return to the CAL screen.
5.
To start pH measurement, press the MEAS key.
To perform calibration again, start the above pro-
cedures from the beginning.
while the HOLD
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