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AB-235

Potentiometric titration of calcium (magnesium) in dairy products


Summary

This Bulletin describes a simple method for the determination of the calcium content in dairy products. The use of CuEGTA and the ion-selective copper electrode (Cu ISE) as indicator electrode allows the determination to be performed without time-consuming sample preparation. If the complexing agent EDTA is used as titrant instead of EGTA, the sum of calcium and magnesium is obtained. The magnesium content can then be calculated from the difference between the results of the two titrations.
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Metrohm AG

Ionenstrasse
9100 Herisau

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// Food – dairy