Horiba Scientific LAQUAact-PH110, Инструкция по эксплуатации

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Ion concentration measurement
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Performing measurement
You can perform measurement in the measurement mode by immersing the ion
electrode in the sample. Also, you can use the automatic hold function to judge the
stability of the measured value. The automatic hold function has two modes, the auto
stability mode and the auto hold mode. For how to set the mode, refer to "Setting the
auto stability and auto hold function" (page 65).
Note
・
For performing calibration or measurement, replace the internal solution inside the outer
tube of the ion electrode before using the electrode.
・
Prepare at least 100 mL of the sample solution for measurement. An insufficient volume
may cause the measured value to drift.
1. Clean the ion electrode with pure water (or
deionized water) and wipe it with filter paper
or tissue paper.
Do not directly touch the responsive membrane.
2. Open the internal solution filler port of the ion
electrode.
If calibration is performed with the port closed,
the internal solution does not flow and the
measurement value is not stabilized. Make sure
to keep the port open during calibration.
3. Immerse at least 3 cm from the tip of the ion
electrode in the sample solution.
Make sure that the responsive membrane is
immersed.
Stability judgment automatically starts and the
ION icon blinks until the measured value
stabilizes.
When the measured value stabilizes, the ION
icon changes from the blinking state to the lit
state, and the display is fixed to the stabilized
measured value.
Stabilized