pH sensor

Details pH sensor pH sensor

2005-04-05

2005-04-05

Olsen, Kaj K. (Department: 1753)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C204S414000, C204S416000, C257S253000

Reexamination Certificate

active

06875328

ABSTRACT:
An inexpensive, high-performance pH sensor measure the surface of a solid substance in a simple manner, comprising an ion sensing part2which responds to pH, a reference electrode3,a gel-form ion permeable substance10,which has a predetermined pH value and covers the ion sensing part2and reference electrode3,and a cover member9,which houses the ion permeable substance10and has an opening9aformed at a position near the abovementioned ion sensing part2.

REFERENCES:
patent: 2183531 (1939-12-01), Allison
patent: 4154659 (1979-05-01), Zetter
patent: 4288308 (1981-09-01), Hach
patent: 4474183 (1984-10-01), Yano et al.
patent: 5218304 (1993-06-01), Kinlen et al.
patent: 5248403 (1993-09-01), Tomita et al.
patent: 5507936 (1996-04-01), Hatschek et al.

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