Patent ID: 9632053
Date: 2017-04-25
CPC Classifications: G01N

Claim:
1. A hand-held analyte sensing device comprising a working electrode, a reference electrode, and a counter electrode, said working electrode, said reference electrode, and said counter electrode being concentrically arranged in a coplanar configuration; a first insulating material interposed between said working electrode and said reference electrode, said first insulating material separating said working electrode from said reference electrode; a second insulating material interposed between said working electrode and said counter electrode, said second insulating material separating said working electrode from said counter electrode; firmware and electronics operably coupled to the working electrode, the reference electrode, and the counter electrode for voltammetry and signal processing, and further comprising a display and controls for operating the device; and an internal working electrode positioned behind the reference electrode and separated from the reference electrode by a buffer solution.