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Method of making liquid membrane electrode

  • US 4,314,895 A
  • Filed: 05/02/1980
  • Issued: 02/09/1982
  • Est. Priority Date: 07/17/1978
  • Status: Expired due to Term
First Claim
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1. The method of forming an ion-sensitive membrane for an electrode chemically bonded to and integral with a sample flow-through tube of organic plastic material comprising forming a membrane solution by dissolving an organic plastic matrix material, a non-volatile solvent-plasticizer and an ion exchange material in a volatile solvent which is also a solvent for said tube material, said ion exchange material being soluble in said solvent-plasticizer, placing a mandrel having a diameter equal to the inner diameter of said tube coaxially of said tube at an opening defined by an edge of said tube, placing said membrane solution on said mandrel at said opening in contact with said tube edge and allowing said volatile solvent to evaporate therefrom to form said membrane, said membrane thus formed and said tube thereby being chemically bonded to each other.

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