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Sensor arrays for detecting analytes in fluids

  • US 5,571,401 A
  • Filed: 03/27/1995
  • Issued: 11/05/1996
  • Est. Priority Date: 03/27/1995
  • Status: Expired due to Term
First Claim
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1. A sensor array for detecting an analyte in a fluid comprising at least first and second chemically sensitive resistors electrically connected to an electrical measuring apparatus, each of said chemically sensitive resistors comprising:

  • a mixture of nonconductive organic polymer and a conductive material compositionally different than said nonconductive organic polymer, wherein each resistor providesan electrical path through said mixture of nonconductive organic polymer and said conductive material,a first electrical resistance when contacted with a first fluid comprising a chemical analyte at a first concentration, anda second electrical resistance when contacted with a second fluid comprising said chemical analyte at a second different concentration,wherein the difference between the first electrical resistance and the second electrical resistance of said first chemically sensitive resistor being different from the difference between the first electrical resistance and the second electrical resistance of said the second chemically sensitive resistor under the same conditions.

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