US PATENT SUBCLASS 204 / 416
.~.~.~ Ion-sensitive electrode

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

193  DF  APPARATUS {5}
194  DF  .~ Electrolytic {11}
400  DF  .~.~ Analysis and testing {20}
416.~.~.~ Ion-sensitive electrode {3}
417  DF  .~.~.~.~> Liquid ion-exchanger
418  DF  .~.~.~.~> Organic membrane
419  DF  .~.~.~.~> Inorganic membrane {1}

DEFINITION

Classification: 204/416

Ion-sensitive electrode:

(under subclass 400) Apparatus which incorporates means which permit only desired ionic species to participate in the electrochemical reaction in a sensing electrode.

(1) Note. Ion-sensitive membranes include: (a) compressed bodies of inorganic salts; (b) monocrystals of such salts; (c) fine powders of such salts embedded in a resin or glass; (d) porous bodies with an adsorbed solution of an ion-exchanger solution.