PURPOSE: To perform accurate measurement in an enzyme sensor measuring a substance such as glucose or lactate. CONSTITUTION: An electrochemical sensor consists of an acting electrode 90 consisting of a non-conductive substrate 62 and a conductive material 66 And constituted so that a part of the conductive material 66 is covered with insulating coating 72 and an active layer containing enzyme supported by platinized carbon particles in an amt. having catalytical activity and the platinized carbon particles are distributed throughout the active layer, an opposed electrode 88 composed of a conductive material 64 and constituted so that a part of the conductive material 64 is coated with insulating coating 72 and at least a part of the conductive material 64 is not coated with the insulating coating 72, a reference electrode 86 composed of a conductive material 68 and constituted so that a part of the conductive material 68 is coated with the insulating coating 72 and at least a part thereof is not coated with the insulating coating 72 and the semipermeable membrane covering the acting electrode 90.

Title
Electrochemical sensor
Application Number
07-161165
Publication Number
1996-193969
Application Date
June 27, 1995
Publication Date
July 30, 1996
Inventor
John A Zalenski
Robert R Mccaffrey
Richard W Mason
Steven C Lepke
Robert B Green
James E Flaherty
Peter G Edelman
Bonnie C Dalzell
Paul A D Orazio
Boden Mark W
Maley Thomas C
Assignee
Ciba Corning Diagnostics
IPC
G01N 27/416
G01N 27/28
C08L 01/12
G01N 27/327