GSO ISO 5522:1994
ISO 5522:1981
Gulf Standard
Current Edition
·
Approved on
01 May 2024
FRUITS, VEGETABLES AND DERIVED PRODUCTS– DEITIUMNATION OF TOTAL SULPHUR DIOXIDE CONTENT
GSO ISO 5522:1994 Files
Arabic
16 Pages
Current Edition
English
7 Pages
Current Edition
Reference Language
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GSO ISO 5522:1994 Scope
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.
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