pH electrode arrangement

Details pH electrode arrangement pH electrode arrangement

Filed on

1998-10-28

Date issued

2000-10-31

Examiner

Tung, T.

Patent Class

Chemistry: electrical and wave energy

SubClass

Apparatus

SubSubClass

Electrolytic

Other Related Categories

204433, 204435, 2057875, G01N 2736

Type

Patent

Status

active

Patent number

061397075

Description

ABSTRACT:
A pH electrode arrangement comprises an inner wire electrode of silver sulfide, and a fill solution comprising a solution of sodium thiosulphate, a buffer, and an antioxidant. The arrangement has a fast response to a change in temperature, a half cell near .+-.500 mV, and an isopotential point near 7 pH.

REFERENCES:
patent: 3111478 (1963-11-01), Watanabe
patent: 3354069 (1967-11-01), Jerrold-Jones et al.
patent: 3859191 (1975-01-01), Frant et al.
patent: 4495050 (1985-01-01), Ross, Jr.
Dunt, Ion-Selective Electrodes, NBS Special Pub. 314, Nov. 1969, pp. 177-180.
Ives, et al, Reference Electrodes, 1961, pp. 179, 381-383.

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