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Beschikbare talen
Beschikbare talen
5 pH and redox (ORP)
5.1 Preparation of the pH / redox electrode
dry?
5.2 Calibration of the pH electrode
The electrode data of the pH electrode is subject to large fluctuations due to ageing and
specimen scatter. A check of the last calibration with suitable buffer solutions should therefore
be carried out before any measurement. If there are deviations, recalibration is recommended.
Please observe the parameter settings before calibration and set the USB mode to mass storage
in the device configuration. Proceed as follows:
(1)
(2)
2-PT
pH A
pH B
pH C
1-PT
3-PT
SD_335_1 05/2023
Remove the storage flask. Check the condition of the
electrode. If the sensor is dry, place the electrode in fresh
storage solution (3 M KCl) for at least 5 hours.
5 h
Check the sensor tip for air bubbles. If any are present,
they can be removed by gently shaking the sensor.
Select the pH parameter in operating mode. The calibration mode
can now be started by pressing and holding the F1 key.
Prepare the required number of calibration solutions.
(1-5 point calibration possible)
Set the calibration with the F2 key.
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