▎ 摘　　要

NOVELTY - Pseudo-reference electrode (20) comprises a pseudo-reference glass material backed by a silver conductor comprising silver metal, where the pseudo-reference glass material is a chalcogenide glass comprising a silver chalcogenide (I), or a halide glass comprising a silver halide and/or at least one glass-forming oxide of a metal or a metalloid, or their composites. USE - The electrode is useful as a reference electrode in a reference half-cell of an ion-selective electrode sensor, and an ion-selective field effect transistor (all claimed). ADVANTAGE - The electrode: is free of an element to be analyzed by the ion-selective electrode sensor or the ion-selective field effect transistor; and does not need to be kept in conditioning electrolyte when stored. DETAILED DESCRIPTION - Pseudo-reference electrode (20) comprises a pseudo-reference glass material backed by a silver conductor comprising silver metal, where the pseudo-reference glass material is a chalcogenide glass comprising a silver chalcogenide of formula (Ag2Ch) (I), or a halide glass comprising a silver halide and/or at least one glass-forming oxide of a metal or a metalloid, or their composites. Ch=chalcogen. INDEPENDENT CLAIMS are also included for: use of the pseudo-reference glass material in the pseudo-reference electrode, preferably in reference half-cell (40) of ion-selective electrode sensor (10), and an ion-selective field effect transistor; a reference half-cell of ion-selective electrode sensor, comprising the pseudo-reference electrode; an ion-selective electrode sensor comprising the reference half-cell, a sensing half-cell (12) and a voltmeter, the reference half-cell and the sensing half-cell being connected to the voltmeter; and ion-selective field effect transistor comprising the pseudo-reference electrode. DESCRIPTION OF DRAWING(S) - The figure illustrates ion-selective electrode sensor comprising the pseudo-reference electrode. 10Ion-selective electrode sensor 12Sensing half-cell 20Pseudo-reference electrode 22Standard electrolyte 40Reference half-cell