ISO 5521:1981

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Fruits, vegetables and derived products -- Qualitative method for the detection of sulphur dioxide

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ISO 5521:1981

Fruits, vegetables and derived products -- Qualitative method for the detection of sulphur dioxide

PUBLISH DATE 1981
ISO 5521:1981

The method is applicable to products having contents of 2 mg or more per kilogram.

It consists in acidification of a test portion and decolourizing by the liberated gas of a starch indicator paper previously coloured blue by a trace of iodine vapour.

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