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Electrochemical sensor

DC CAFC
  • US 5,628,890 A
  • Filed: 09/27/1995
  • Issued: 05/13/1997
  • Est. Priority Date: 09/27/1995
  • Status: Expired due to Term
First Claim
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1. An electrode strip for use in an electrochemical sensor for measuring a compound in a sample, comprising:

  • an electrode support;

    a reference or counter electrode disposed on the electrode support;

    a working electrode spaced from the reference or counter electrode on the electrode support and comprising an enzyme which catalyzes a reaction involving a substrate for said enzyme or a substrate catalytically reactive with an enzyme and a mediator which transfers electrons between said enzyme-catalyzed reaction and said working electrode to create a current representative of the activity of said enzyme and representative of the compound;

    a covering layer defining an enclosed space over the reference and working electrodes, said covering layer having an aperture for receiving a sample into said enclosed space; and

    a plurality of mesh layers interposed in said enclosed space between said covering layer and said electrodes.

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