Codes & Standards - Purchase
ISO 5522:1981
Fruits, vegetables and derived products -- Determination of total sulphur dioxide content
SKU: iso_011576_104529
Published by ISO
Publication Year 1981
1 Edition
7 pages
Product Details
The method consists in acidifying and heating a test portion, entraining, in a current of nitrogen, the gas liberated, absorbing and oxidizing the gas by bubbling it through a neutral, dilute hydrogen peroxide solution, then determining the sulphuric acid thus formed using standard volumetric sodium hydroxide solution. Verification of the determination is described in the annexes A and B, respectively.