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Bulletin of the IDF N° 450/ 2011: Determination of Water Content in Lactose by Karl Fischer Titration

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published date 24 March 2011
reference Bulletin of the IDF No. 450/2011

Publication description

Interlaboratory collaborative study

The traditional gravimetric oven drying method for determining water content in dried dairy products does not give reliable results when applied to lactose. A Karl Fischer Titration method that determines molecular water has been developed and tested in an international collaborative study to establish its precision (repeatability and reproducibility) for its adoption as an international standard by IDF and ISO (ISO 12 779 | IDF 227).

Keywords: lactose, Karl Fischer, water determination, interlaboratory study, collaborative study, precision.

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