Fruits, vegetables and derived products — Qualitative method for the detection of sulphur dioxide
NORMA vydaná dňa 1.8.1981
Označenie normy: ISO 5521:1981
Dátum vydania normy: 1.8.1981
Počet strán: 2
Približná hmotnosť: 6 g (0.01 libier)
Krajina: Medzinárodná technická norma
Kategória: 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.