ELECTROCHEMICAL SENSOR

摘要

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.