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The problem of a general determination of the concentration of aqueous cleanser systems is that these systems always consist of several components such as tensides, builder compounds, corrosion inhibitors, or stabilizers. The consumption of tensides and builder compounds (alkalinity), the basic components, in the washing bath can vary or they can be enriched by impurities as a result of the washing process. Until now the concentration in alkaline systems could be determined with sufficient exactitude by means of an acid/base titration. For neutral and mild alkaline cleansers tenside determination methods should be used.
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