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Homepage>ISO Standards>ISO 5522:1981-Fruits, vegetables and derived products — Determination of total sulphur dioxide content
download between 0-24 hoursReleased: 1981
ISO 5522:1981-Fruits, vegetables and derived products — Determination of total sulphur dioxide content

ISO 5522:1981

ISO 5522:1981-Fruits, vegetables and derived products — Determination of total sulphur dioxide content

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Standard´s number:ISO 5522:1981
Pages:7
Edition:1
Released:1981
DESCRIPTION

ISO 5522:1981


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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