pH glass electrode

Details pH glass electrode pH glass electrode

1995-06-02

1996-12-10

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204435, 2057875, G01N 2736

Patent

active

055826997

ABSTRACT:
In the pH glass electrode comprising a double-walled glass tube in which an electrical screen is provided between the walls, the inner glass tube is sealed at one end with a glass lid and at the other end with a pH-sensitive glass membrane which forms, with the glass tube, a cavity which is filled with internal reference solution and into which the reference electrode extends. A feed tube (10) and a drain tube (11) which are passed through the lid (5) and intended for the internal reference solution (8) are disposed in the internal glass tube (3), the drain tube (11) extending down to the lowest point in the cavity (7).

REFERENCES:
patent: 2677655 (1954-05-01), Klumb
patent: 3652439 (1972-03-01), Ben-Yaakov et al.
patent: 4569224 (1986-02-01), Fukumoto et al.
International Electrotechnical Commission, IEC Standard, "Expression of Performance of Electrochemical Analyzers", Part 2: pH value, Publication 746-2, First Ed., 1982.

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