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Miniature liquid junction reference electrode and an integrated solid state electrochemical sensor including the same

  • US 4,592,824 A
  • Filed: 09/13/1985
  • Issued: 06/03/1986
  • Est. Priority Date: 09/13/1985
  • Status: Expired due to Term
First Claim
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1. A miniature reference electrode providing both electrical connection and a liquid junction between a reference liquid solution and a solution to be tested, comprising:

  • a substrate provided with a cavity to hold said reference liquid solution;

    a membrane comprising porous silicon closing a first end of said cavity;

    means for applying fixed control voltage to said reference liquid solution; and

    means for hermetically closing a second end of said cavity.

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