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4.10 ION Measurement
This section describes the procedures of ION measurement.
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1.
Wash the electrode with pure water (ion
exchange water), and wipe it off either with filter
paper or tissue paper.
2.
Open the internal solution filler port of the
electrode.
During measurement, the filler port should be
kept open.
The filler port configuration depends on the
electrode type.
3.
Immerse the electrode into the sample solution
deeper than 3 cm from the tip.
Immerse the electrode tip at least 3 cm into the
sample solution for an accurate measurement.
Refer to the instruction manual of the electrode for
more details.
4.
Press the MEAS key, and tap the channel setting
and the measurement item in the MEAS screen
to set "CH1" and "ION".
5.
Tap
to start 1st point measurement.
The measurement value is displayed, and the
HOLD indicator blinks until the reading
stabilizes.
To stop calibration tap
indicator blinks.
When the reading stabilizes, the value is held
and HOLD indicator lights up.
During instantaneous value measurement, or
when a measurement value is held, you can
store the measurement values by tapping
the bottom of the screen.
6.
After the measurement is completed, tap
to proceed to the next measurement.
while the HOLD
on
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