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CA-200
Background remains zero.
Press [Titration] key to set titration to OFF and read a potential. When it is minus, inject check
solution or a little water and check that it is plus. When it is not plus, take the following measures.
Expected trouble causes
Sample troubles
1. Samples with oxidizability
2. Samples are not fit for
reagents.
Detection electrode
1. Electrode contamination
2. Electrode breakage
Countermeasures
Measurement by the direction method is impossible.
Check reagent catalogues.
Wash it. (Refer to 8-2-2. Washing.)
Change the broken one.
(Electrodes are consumables.)
Hydrofluoric acid sample causes glass corrosion.
9-7
Section 9: Troubleshooting
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