Metrohm 899 Coulometer - Manual (Page 22)

3.2 Setting up the coulometer cell
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899 Coulometer
4 Insert the 6.0345.100 generator electrode without diaphragm or the
6.0344.100 generator electrode with diaphragm together with the
adsorber tube into the large ground-joint opening at the rear.
5 Insert the 6.0341.100 indicator electrode into the left ground-joint
opening.
6 Place the 6.1448.020 septum on the front opening of the coulome-
ter cell and screw it shut with the 6.2701.040 screw cap.
Tighten the screw cap only enough so that it seals. The septum is not
permitted to bend.
Filling the coulometer cell (generator electrode with dia-
phragm)
Proceed as follows when using a generator electrode with a diaphragm:
1 Fill approximately 5 mL of catholyte into the generator electrode.
2 Fill approximately 100 mL of anolyte into the coulometer cell with
the aid of the 6.2738.000 funnel. The level of the anolyte should be
roughly 1-2 mm above the level of the catholyte.
3 Close the remaining ground-joint opening on the right with the
6.1437.000 ground-joint stopper (with ground-joint sleeve attached).
Filling the coulometer cell (generator electrode without
diaphragm)
Proceed as follows when using a generator electrode without a dia-
phragm:
1 Fill approximately 100 mL of reagent into the coulometer cell with
the aid of the 6.2738.000 funnel.
2 Close the remaining ground-joint opening on the right with the
6.1437.000 ground-joint stopper (with ground-joint sleeve attached).