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The hand-held meter is designed to be operated with electrodes that have a
silver/silver chloride (Ag/AgCl) reference system!
If a different type is used, the mV
measurements!
8.1
General handling
Recommended
redox
combination
electrodes
Operating life
8 The redox combination electrode
JUMO ecoLine Rd, 2 m fixed connecting cable and BNC connector
Type: 201010/54-22-65-2000-76-120/000
Sales No. 20/00424950
- Store in a dry room at a temperature between 10°C and 30°C.
Below 0°C the combination electrode can be destroyed by freezing of the
electrolyte!
- The sensor portion of the combination electrode should be protected
against drying out by using a protective cap filled with 3-mol KCl solution or
a storage holder.
Lengthy storage in de-ionized (distilled) water will result in a depletion of the
KCl within the combination electrode.
- It is neither necessary nor possible to top up the electrolyte for this
combination electrode (low-maintenance).
- Rinse the electrode carefully with de-ionized (distilled) water before making
a measurement.
- When measuring in different media, rinse thoroughly each time.
- Clean the combination electrode after use.
For contamination with proteins, a pepsin + hydrochloric acid solution
(Sales No. 20/00307114) is recommended.
- The platinum tip of the sensor can be cleaned with ordinary scouring
powder (rinse well afterwards).
- If there is a malfunction of the combination electrode:
- check the function with a second reference combination electrode.
- replace the combination electrode.
- Solutions for calibration, cleaning and activation can be obtained from
JUMO or from laboratory suppliers.
Reference system: Ag/AgCl, electrolyte: KCl, 3 mol/liter
JUMO ecoLine Rd, 2 m fixed connecting cable and BNC connector
Type: 201010/65-22-65-2000-76-120/837
Sales No. 20/00424950
(use only this type for conversion to the hydrogen system "mV
measurements!)
The operating life of electrodes depends on the conditions in which they are
used. The operating life is at least 6 months under normal conditions and with
appropriate care and maintenance.
measurement function will produce false
H
" and rH
H
29
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