Patent ID: 6416646
Filing Date: 2002-07-09
Classification: G01N

Abstract:
A method of providing a stable and reproducible electrical interface between a solid contact reference providing a redox couple formed of a conductive metal and a salt of the metal, the salt of the metal including first and second ions, the first ions being ions of the metal having a first charge and the second ions having a second charge opposite the first charge, and a cation-selective material of an ion selective sensor or the like, comprising the step of:contacting both said solid contact reference and said cation-selective material with a polymeric material comprising a polymerization product of at least one charged monomer and including immobilized, positively charged sites from said charged monomer and mobile counter ions that are the same ions as the second ions, thereby providing a stable equilibrium and enhanced ionic transport between the redox couple and the polymeric material.