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Planar bicarbonate sensor

  • US 5,554,272 A
  • Filed: 08/10/1995
  • Issued: 09/10/1996
  • Est. Priority Date: 08/10/1995
  • Status: Expired due to Term
First Claim
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1. A planar bicarbonate sensor comprising an electrically nonconductive substrate having applied thereto in a planar format an electrically conductive material in at least one region adjacent to said substrate;

  • a dielectric coating covering at least a lead portion of said electrically conductive material but leaving exposed at least an electrode area of said electrically conductive material and leaving exposed at least a contact area on said region of said electrically conductive material;

    a silver/silver halide transducer present adjacent to said electrically conductive material in said exposed electrode area;

    an internal electrolyte residue layer present on top of and adjacent to said transducer;

    a cover membrane present on top of and adjacent to said internal electrolyte residue layer, wherein said internal electrolyte residue layer is an aqueous solution comprised of from about 0.0002 M to about 0.0003 M of a bicarbonate source, and a halide salt of potassium, lithium, or sodium, wherein said internal electrolyte residue layer has been dried.

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