G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 27/333 (2006.01) A47L 15/44 (2006.01) A61L 2/24 (2006.01) G01N 27/416 (2006.01) G05D 11/13 (2006.01)
Patent
CA 2116226
(57) Abstract The invention concerns a method of determining the concentration of an iodine/iodide-containing active substance in aqueous solutions intended for use in the cleaning or disinfection of containers such as bottles, drums, kegs, cases and tanks and/ or pipe lines in the food-processing industry, as well as for industrial-scale cleaning in continuous washing plants, the concentra- tion of the active substances in the solution being measured by determining the iodine/iodide content of the solution. The inven- tion provides a rapid, reliable and accurate method which is not prone to interference and can be used on a continuous basis. In addition, it makes it possible to automate the process by which the active substance is kept at the required concentration. In parti- cular, the method proposed can be employed in an integrated cleaning-in-place system. These advantages are achieved by the in- vention by virtue of the fact that the iodide-ion concentration in the solution is measured potentiometrically using electrodes which behave selectively towards iodide ions, and the concentration of the active substance calculated from the measurement re- sults obtained, the iodine/iodide concentration in the solution lying between 0.1 and 1000 ppm, in particular between 1 and 20 ppm.
Laufenberg Alfred
Siepmann Friedhelm
Varpins Mike
Werner-Busse Alfred
Borden Ladner Gervais Llp
Henkel Kommanditgesellschaft Auf Aktien
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