• Ion-selective electrode / silver / glass / laboratory
  • Ion-selective electrode / silver / glass / laboratory

Article: 00045856

Ion-selective electrode / silver / glass / laboratory

During the research of the single crystal materials began in 1967 year production of the fluoride ion selective electrodes. The active material was lanthanum trifluoride single crystal prepared by Stockbarger-Bridgman method in vacuum. The prepared single crystals were cuting, brush , adapt on the needful dimensions and polished.
The sensors have were mounted in the electrode body and tested.

By the same manner by growing in the vacuum by Stocbarger-Bridgman method were prepared sensors for silver selective electrodes and sulphide selective electrodes. For measuring of the sulphide ions in the solutions is used SAOB for adjustmet of the ionic strength, and stabilization of sulphide ions.

The mixture of the sulphides is used in the preparing of the lead ion selective electrodes and cadmium ion selective electrodes. The surface of the lead ion selective electrode must be kept fresh and polished, that is important for a good function , fast response and good potential stability of the lead ion selective electrode. It is necessary to know, that at the cadmium selective electrode in the presence of the chloride ions in the measuring solutions, the tetrachlorocadmium complexes are created and concetration of the free cadmium ions is decresed. Although the chloride ions do not influence on the potential of the cadmium ion selective electrode, they decresed the free cadmium ions in the measuring solutions. The same effect we can observe at the other ion selective electrodes in solutions with adding some complexing agents.

Specifications

  • Type: ion-selective
  • Material: silver, glass
  • Other characteristics: laboratory

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