Greisinger GMH 3530 pH measurement equipment 600425 データシート
製品コード
600425
H33.0.02.6C-09
Operating Manual GMH 3530
page 12 of 14
14 The Redox-electrode
The device has been optimized for electrodes using silver/silver chloride as reference system and the elec-
trolyte KCl, 3mol/l.
If other types are used, the measuring function mV
trolyte KCl, 3mol/l.
If other types are used, the measuring function mV
H
will supply wrong measuring results.
How to treat electrode:
- Store electrode in dry environment at temperatures between 10°C and 30°C. If temperature falls below -5°C the
electrolyte may freeze and the electrode be destroyed.
- The electrode is equipped with a protection cap and must always be kept wet. The protection cap contains a
3mol/l-KCl solution which needs to be topped up, if necessary. If combined electrodes and reference electrodes
are kept within distilled water for a longer period of time this may lead to a loss of KCI.
are kept within distilled water for a longer period of time this may lead to a loss of KCI.
- Remove air bubbles in the membrane ball by shaking (like fever thermometer).
- Check reference electrolyte level at regular intervals; if necessary, top up electrolyte level with 3 mol/lKCI solution
- Check reference electrolyte level at regular intervals; if necessary, top up electrolyte level with 3 mol/lKCI solution
through filling hole (closed by means of a silicon ring) using a syringe or pipette.
- Rinse electrodes thoroughly with distilled water before measurement.
- Rinse again during the measuring process. Clean electrodes after use. We recommend a pepsin hydrochloric
- Rinse again during the measuring process. Clean electrodes after use. We recommend a pepsin hydrochloric
acid (GRL 100) to clean soiling by protein.
- The platinum cap (silvery) can be cleaned by any commercial cleaning powder (put some cleaning powder on a
cloth and apply to platinum in rotary movements for a short time)
- In case the measuring function of the electrode is impaired or reacting extremely slow, please proceed as follows:
- check reference electrode for air bubbles
- check reference electrode by comparing meas. results to those obtained by another reference electrode
- treat sensitive glass membrane with recovery solution (1 to 2 minutes at ambient temperature)
- replace electrode
- check reference electrode by comparing meas. results to those obtained by another reference electrode
- treat sensitive glass membrane with recovery solution (1 to 2 minutes at ambient temperature)
- replace electrode
Our scope of supply includes all solutions for calibrating, topping up, cleaning and activating.