Method for producing an ISE half-cell, ISE half-cell, sensor, and multi-parameter sensor

Patent metadata

Field	Value
Publication number	US-11460429-B2
Application number	US-201816103816-A
Country	US
Kind code	B2
Filing date	Aug 14, 2018
Priority date	Aug 14, 2017
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

The present disclosure discloses a method for producing an ISE half-cell, including the steps of: immersing a first end of a hollow body into a membrane solution comprising at least one solvent and an ion-specific ionophore; removing the hollow body from the membrane solution; drying the hollow body and evaporating the solvent from the membrane solution, whereby an ion-selective membrane is created at the immersed end of the hollow body; and completing the hollow body to make an ISE half-cell. The present disclosure also discloses an ISE half-cell that is produced according to such a method. The present disclosure further discloses a sensor and a multiparameter sensor comprising several such ISE half-cells.

First claim

The invention claimed is:

1. A method for producing an ion selective electrode (ISE) half-cell, including the steps of:
immersing a first end of a hollow body into a membrane solution comprising at least one solvent and an ion-specific ionophore;
removing the hollow body from the membrane solution;
drying the hollow body and evaporating the solvent from the membrane solution, whereby an ion-selective membrane is created at the first end of the hollow body, and
completing the hollow body to make an ISE half-cell;
immersing the first end of the hollow body with the ion-selective membrane into an additional solution in order to apply a functional layer, an anti-fouling layer, or a layer with a low wetting capability of the surface of the ion-selective membrane; and
applying an overpressure at the first end or at a second end of the hollow body after immersing the first end and removing the hollow body relative to the membrane solution.

2. The method according to claim 1 , wherein the steps of immersing the first end and drying are executed multiple times.

3. The method according to claim 1 , wherein the membrane solution comprises a polymer solution.

4. The method according to claim 1 , further including a step of:
performing a microscopic surface modification on the hollow body.

5. The method according to claim 1 , further including a step of:
introducing a metallic support structure onto or into the ion-selective membrane.

6. The method according to claim 1 , wherein completing the hollow body to make an ISE half-cell includes at least one of the steps of:
filling an inner electrolyte into the hollow body; and
introducing a reference electrode into the interior of the hollow body.

7. The method according to claim 1 , wherein completing the hollow body to make an ISE half-cell includes a step of:
attaching the hollow body to an electrode shaft that can be filled with an inner electrolyte.

Assignees

• Endress Hauser Conducta Gmbh Co Kg

Inventors

• Petzold Holm
• Vettermann Jens
• Hennings Erik

Classifications

• G01N27/301

  Reference electrodes · CPC title

• G01N27/302 Primary

  pH sensitive, e.g. quinhydron, antimony or hydrogen electrodes (ion selective electrodes G01N27/333, glass electrodes G01N27/36) · CPC title

• G01N27/3335 Primary

  the membrane containing at least one organic component (G01N27/3271 takes precedence; aspects concerning the enzyme reagent in enzyme electrodes C12Q1/001) · CPC title

• G01N27/31 Primary

  Half-cells with permeable membranes, e.g. semi-porous or perm-selective membranes · CPC title

• G01N27/413

  Concentration cells using liquid electrolytes {measuring currents or voltages in voltaic cells} · CPC title