HYDROGEN ION SELECTIVE SENSOR AND ELECTRODE THEREFOR

• US 3,709,810 A
• Filed: 09/30/1970
• Issued: 01/09/1973
• Est. Priority Date: 09/30/1970
• Status: Expired due to Term

• Current Assignee: Lawrence H. King, Willard T. Grubb
• Original Assignee: Lawrence H. King, Willard T. Grubb
• Inventors: Grubb, Willard T., King, Lawrence H.
• Primary Examiner(s): Tung, T.
• Application Number:
  US05/076,794
• Time in Patent Office: 832 Days
• Field of Search: 204/1T,195,29F
• US Class Current: 204/419
• CPC Class Codes: G01N 27/333 Ion-selective electrodes or membranes glass electrodes G01N27/36

Abstract

A hydrogen ion selective sensor has a sensing electrode with a palladium oxide coated palladium surface element and a reference electrode. A specific hydrogen ion selective sensor has a sensing electrode with a palladium oxide coated palladium surface element, a reference electrode spaced from and electrically insulated from the sensing electrode, an electrically insulating cover surrounding the palladium portion of the sensing electrode and the reference electrode, the cover defining an electrolyte chamber for containing a reference electrolyte therein, and a wick extending outwardly from the chamber adjacent the palladium oxide portion of the sensing electrode. An improved hydrogen ion selective sensing electrode is described which has a palladium oxide coated palladium surface element.

Claims

2. A hydrogen ion selective sensor as in claim 1, in which the electrically insulating cover is polyolefin heat-shrinkable tubing.

3. A hydrogen ion selective sensor as in claim 1, in which a reference electrolyte is contained in the chamber.