Combination electrode system

Details Combination electrode system Combination electrode system

1976-06-10

1979-01-09

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204195M, 204 1T, G01N 2736

Patent

active

041337328

ABSTRACT:
The hydrogen ion concentration or pH of liquids may be measured, particularly in industrial or municipal processes, by a combination glass electrode system containing a glass electrode, a reference electrode and a liquid junction connecting the reference electrode with the process liquid. Both the measuring glass electrode and the reference electrode are the same kind of all-solid-state glass button electrodes, electrically connected to an impedance-transforming integrated circuit; all these components being encapsulated in a hermetically sealed shell. The reference electrode is in mechanical contact with a reference gel, external to the sealed enclosure but isolated from the process liquid and in ionic contact with this liquid only at the liquid junction.

REFERENCES:
patent: 2117596 (1938-05-01), Bender et al.
patent: 2886771 (1959-05-01), Vincent
patent: 3306837 (1967-02-01), Riseman et al.
patent: 3700577 (1972-10-01), Grauer
patent: 3717565 (1973-02-01), Doyle
patent: 3855098 (1974-12-01), Fletcher
patent: 3862895 (1975-01-01), King
patent: 3880737 (1975-04-01), Brunt
patent: 3923625 (1975-12-01), Fischer et al.
patent: 4031606 (1977-06-01), Szonntagh

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