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Method of producing combination ion selective sensing electrode

  • US 4,565,666 A
  • Filed: 07/18/1984
  • Issued: 01/21/1986
  • Est. Priority Date: 08/03/1983
  • Status: Expired due to Fees
First Claim
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1. A method for producing an ion sensing electrode, comprising the following ordered steps:

  • dissolving an ion selective material in a solvent which is a swelling agent for a plastic;

    subsequently soaking in said solvent a tube fabricated of said plastic and having a proximal end, a distal end, and outer wall, a first lumen, a second lumen and an inner wall separating said first and second lumens, said tube soaked only distal to a first point intermediate the proximal and distal ends of said tube, until said tube swells;

    subsequently drying said tube until said solvent evaporates; and

    filling the first and second lumens of said tube with an electrolyte;

    said method further comprising the following non-ordered steps which may be performed in any convenient order relative to said ordered steps;

    removing that portion of the outer wall of said tube located exterior to said second lumen, intermediate the distal end of said tube and a second point proximal to said first point;

    sealing the distal end of the first lumen of said tube; and

    inserting first and second electrodes into the first and second lumens of said tube.

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