Ion-selective electrode device for polarographic measurement of oxygen

USRE31299E · kind E · reissue

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Manfred Kessler · Dortmund, DE
• Jens Hoper · Dortmund, DE

Key dates

• Filing date: Mar 12, 1982
• Grant date: Jul 5, 1983
• Expiry date: Mar 12, 2002

Classification

• Technology area (CPC —): General

Abstract

An ion-selective electrode device for measuring oxygen concentrations comprises a noble metal reduction electrode connected to a voltage source; a reference electrode connected to said reduction electrode; an ion-selective carrier or ligand membrane disposed in front of the reduction electrode and containing a cation-selective ligand and being permeable to hydrogen ion; a closure membrane to seal the device against the outside atmosphere, the said closure membrane being permeable to oxygen and impermeable to water, and an electroyte containing the ligand cation of said ligand membrane, the said electrolyte being disposed between the said ligand membrane and said closure membrane.