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Solvent polymeric membrane pH catheter electrode for intraluminal measurements in the upper gastrointestinal tract

Medical and Biological Engineering and Computing volume 25, pages 414–419 (1987)Cite this article

Abstract

A hydrogen ion-selective PVC membrane based on octadecyl isonicotinate (ETH 1778) is used to construct a miniaturised potentiometric pH electrode for intraluminal application. The all-polymeric device includes a reference electrode and is of less than 2 mm overall diameter. The current state of the materials used limits its dynamic range to between pH 0 and 4. The lifetime is at least five months. The inexpensive and easy construction allows its use as a disposable device.

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Author notes

  1. Z. Brzózka

    Present address: Department of Chemistry, Technical University of Warsaw, Ul. Noakowskiego 3, PL-00-664, Warsaw, Poland

  2. A. Xu

    Present address: Hygiene Department of Nanjing, Medical College, Nanjing, People's Republic of China

Authors and Affiliations

  1. Department of Organic Chemitry, Swiss Federal Institute of Technology, CH-8092, Zurich, Switzerland

    U. Oesch,  Z. Brzózka,  A. Xu & W. Simon

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  1. U. Oesch
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  2. Z. Brzózka
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  3. A. Xu
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Oesch, U., Brzózka, Z., Xu, A. et al. Solvent polymeric membrane pH catheter electrode for intraluminal measurements in the upper gastrointestinal tract. Med. Biol. Eng. Comput. 25, 414–419 (1987). https://doi.org/10.1007/BF02443362

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  • DOI: https://doi.org/10.1007/BF02443362

Keywords

  • Intraluminal probe
  • pH electrode
  • Polymeric membrane