Fruits, vegetables and derived products — Qualitative method for the detection of sulphur dioxide
NORMA vydána dne 1.8.1981
Označení normy: ISO 5521:1981
Datum vydání normy: 1.8.1981
Počet stran: 2
Přibližná hmotnost: 6 g (0.01 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy ISO
Description / Abstract: 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.