Automatic determination of the contamination of aqueous cleaning solutions with carbonaceous compounds

US6653142B1 · kind B1 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien (Henkel KGAA) · DE

Inventors

• Werner Opitz · Langenfeld, DE
• Hans-Willi Kling · Wuppertal, DE
• Andrea Wimschneider · Goldkronach, DE
• Ibolya Bartik-Himmler · Wuppertal, DE
• Bernd Schenzle · Troy, US
• Wolfgang Krey · Wuppertal, DE

Key dates

• Filing date: Mar 29, 2001
• Grant date: Nov 25, 2003
• Expiry date: Mar 29, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T436/235
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method of automatically determining the content of inorganic carbon and/or total organic carbon in an aqueous purifying solution wherein, in program-controlled manner, (a) a sample of a predetermined volume is taken from the aqueous purifying solution; (b) if desired, the sample is freed of solids and/or homogenized; (c) if desired, the sample is diluted with water in a ratio which has been preset or is determined as a result of a preliminary analysis; (d) the inorganic carbon and/or total organic carbon is analysed using known methods; and (e) the result of the analysis is transmitted to a remote location and output and/or stored on a data carrier and/or used as the basis of further calculations. Program-controlled or automatic, externally-initiated checking of the measuring device is provided. Bath treatment measures may be implemented in program-controlled manner or in response to external triggering.