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ISO 6638-2:1984

Fruit and vegetable products -- Determination of formic acid content -- Part 2: Routine method

This standard has been reviewed and then confirmed in 2010 
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The method consists in quantitative entraining by steam of the acid present in a test portion, determing of the amount of iodine equivalent to the amount of bromine consumed by the acid in the distillate, by titration with sodium thiosulfate standard volumetric solution.


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