Published
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.
PUBLISHED
ISO 5521:1981
90.93
Standard confirmed
Jan 13, 2022
Fruits, vegetables and derived products — Qualitative method for the detection of sulphur dioxide
90.93 Standard confirmed