Reference electrode

Details Reference electrode Reference electrode

1993-09-10

1995-01-31

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204416, 204418, 204415, 204414, G01N 2726

Patent

active

053856597

ABSTRACT:
A planar reference electrode for chemical sensors, which are able to be supplied with a measuring fluid and a calibrating fluid. The planar reference electrode has the following components: an internal reference element situated on a flat substrate; a layer covering the substrate in the vicinity of the internal reference element and consisting of a structured polymer and having at least one trench, which serves as a diffusion channel and extends in the lateral direction from the internal reference element to a region that comes in contact with the measuring fluid or calibrating fluid to be supplied to the chemical sensor, where the diffusion in the diffusion channel is determined by the channel geometry and/or by a diffusion layer; and a covering which seals off the trench.

REFERENCES:
patent: 4874500 (1989-10-01), Madou et al.
patent: 5183549 (1993-02-01), Joseph et al.
Viekkert, H. van den et al., "Solvent Polymeric Membranes Combined with Chemical Solid-State Sensors", Analyst, vol. 113 (1988), pp. 1029-1033.
Cammann, K., "Das Arbeiten mit ionenselektiven Elektroden", Springer-Verlag Berlin Heidelberg, N.Y. (1977), pp. 44-47.
J. Janata and R. H. Huber, "Solid State Chemical Sensors", Academic Press Inc., Orlando (1985), pp. 101-103.
P. Bergveld and A. Sibbald, "Analytical and Biomedical Applications of Ion-selective Field-effect Transistors", Elsevier Science Publishers B.V., Amsterdam (1988), pp. 63-74.

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