Granted Patent B2

US 9,927,389 · App. 14/032,891 · Granted Mar 27, 2018

Abstract

Claims (14)

1. An electrochemical sensor for the detection and analysis of total alkalinity in water, said electrochemical sensor comprising:

(i) an electrically non-conductive support;

(ii) a plurality of electrodes on the support, each electrode having a first surface and an opposite second surface, said first surface facing towards the support and the second surface facing away from the support, the plurality of electrodes comprising

1. a reference electrode,

2. a counter electrode, and

3. a working electrode; and

(iii) a reagent composition containing a reagent for detecting total alkalinity applied directly to the second surface of the working electrode

wherein the reagent applied to the working electrode comprises a manganese (II) salt and a polymeric material.

2. The electrochemical sensor according to claim 1 , wherein the electrode comprises one to eight working electrodes.

3. The electrochemical sensor according to claim 1 , wherein the reagent composition essentially completely covers the entire second surface of the working electrodes.

4. The electrochemical sensor according to claim 1 , wherein the polymeric material comprises polyethylene glycol, sodium alginate, polyvinyl alcohol, or polyvinylpyrrolidone.

5. The electrochemical sensor according to claim 1 , further comprising a plurality of electrical contacts, wherein each of the electrodes is electrically connected with a separate contact.

6. The electrochemical sensor according to claim 1 , wherein the reference electrode comprises a silver/silver chloride electrode, the counter electrode comprises a carbon electrode and the working electrode comprises a carbon electrode.

7. The electrochemical sensor according to claim 1 , wherein the water is pool water.

Assignments (19)