Electrochemical device for chemical analysis

• US 2,913,386 A
• Filed: 03/21/1956
• Issued: 11/17/1959
• Est. Priority Date: 03/21/1956
• Status: Expired due to Term

• Current Assignee: Leland C. Clark Jr
• Original Assignee: Leland C. Clark Jr
• Inventors: Clark, Leland C. Jr.
• Application Number:
  US03/573,029
• Time in Patent Office: 1,336 Days
• US Class Current: 204/415
• CPC Class Codes: G01N 27/404 Cells with anode, cathode and cell electrolyte on the same side of a permeable membrane which separates them from the sample fluid , e.g. Clark-type oxygen sensors
• CPC Class Codes: Y10S 435/807 Gas detection apparatus

Claims

1. A POLAROGRAPHIC CELL FOR USE IN ANALYZING A COMPOSITION TO DETERMINE TO QUANTITY OF A CERTAIN SUBSTANCE IN SAID COMPOSITION, SAID CELL COMPRISING:

AN ANODE AND A CATHODE;

MEANS SUPPORTING SAID ANODE AND SAID CATHODE IN FIXED SPACED RELATIONSHIP;

MEANS FOR CONFINING AN ELECTROLYTE FORMING SUBSTANCE IN ELECTRICAL CURRENT CARRYING CONTACT WITH SAID ANODE AND SAID CATHODE;

MEANS FOR IMPRSSING A PREDETERMINED ELECTRICAL POTENTIAL ACROSS SAID ANODE AND SAID CATHODE;

BARRIER MEANS SURROUNDING SAID ANODE AND SAID CATHODE AND SAID ELECTROLYTE FORMING SUBSTANCE TO PHYSICALLY SEPARATE AND ELECTRICALLY INSULATE SAID ELECTROLYTE FROM SAID COMPOSITION BEING ANALYZED, SAID BARRIER MEANS BEING PERMEABLE TO THE SUBSTANCE IN SAID COMPOSITION THE QUANTITY OF WHICH IT IS DESIRED TO DETERMINE, SAID SUBSTANCE BEING REACTABLE WITH SAID ELECTROYLYTE FORMING SUBSTANCE TO ALTER THE ELECTRICAL CHARACTERISTICS OF SAID CELL, SAID BARRIER MEANS BEING IMPERMEABLE TO ALL ELECTROLYTE FORMING SUBSTANCE;

AND MEANS FOR OBSERVING BY RECTIONS BETWEEEN SAID ELECTROLYTE FORMING SUBSTANCE AND SAID SUBSTANCE TO WHICH SAID BARRIER MEANS IS PERMEABLE.