Patent ID: 6527930
Filing Date: 2003-03-04
Classification: G01N

Abstract:
An ultramicroelectrode array, the array comprising:a) a substrate; b) an iridium layer deposited over and insulated from the substrate, said iridium layer including an exposed portion comprising an exposed iridium ultramicroelectrode surface; and c) a metallic bond pad layer, the metallic bond pad layer including a pattern of at least one bond pad interconnected to the exposed iridium ultramicroelectrode surface via a conductive pathway, wherein the ultramicroelectrode array is configured such that, when used in association with a reference or counter electrode for detecting metal concentration in a fluid, dipping the array in fluid places said exposed iridium ultramicroelectrode surface directly in contact with the fluid whereby a potential applied to the bond pads deposits or strips metal present in the fluid to produce a signal indicative of metal concentration in the fluid.