Patent ID: 6942769

Claim:
An electrode strip for use in an electrochemical sensor for measuring an analyte in an aqueous sample, comprising: an elongated electrode support having a terminal end; a first and a second electrode on said support for electrochemical analysis of said analyte, said first electrode having a forwardly disposed leg which is near said terminal end and second electrode having a rearwardly disposed leg which is rearwardly disposed with respect to both said terminal end and said forward leg of said first electrode; a dielectric layer, a screen, and a cover layer, all disposed atop each other and atop said electrodes and said support; said dielectric layer and cover layer having an open-topped slot therein, said slot being open to said terminal end and extending over at least said forwardly and rearwardly disposed electrode legs, said slot forming a vent at least over said forwardly and rearwardly disposed electrode legs; and said screen having a porosity between 10% and 40% to control analyte flow and volume in said slot and over said forwardly and rearwardly disposed electrode legs.