MEMBRANE ANCHOR FOR ION-SELECTIVE ELECTRODES

摘要

A membrane anchor for an ion-selective electrode may be formed by intersolubilizing an ion-selective membrane lying above a sensing pad with a region of thermoplastic material laterally disposed around the membrane. A first layer of electrically insulating thermoset material lies beneath the thermoplastic material and in intimate contact with an electrically insulating susbstrate. A second layer of exposed thermoset material lies above the thermoplastic material and contacts the first layer of thermoset material around the entire lateral perimeter of the thermoset material. The membrane anchor may be usefully employed with an ion-selective electrode having an electrically insulating substrate with a substantially planar surface and having non-metallic means for sensing a potential affixed to the surface beneath an ion-sensitive membrane.