RESOLUTION OIV-OENO 646-2019

UPDATE TO FILE COEI-1-POTBIS ON POTASSIUM HYDROGEN SULFITE

THE GENERAL ASSEMBLY,

IN VIEW of article 2, paragraph 2 ii of the Agreement of 3rd April 2001 establishing the International Organisation of Vine and Wine,

CONSIDERING the work of the "Specifications of Oenological Products” Expert group,

DECIDES, on the proposal of Commission II “Oenology”, to update monograph E-COEI-1-POTBIS in the International Oenological Codex as follows:

Update to file E-COEI-1-POTBIS on potassium hydrogen sulfite

In the section ‘4. PROPERTIES’, the second paragraph is modified as follows:

4.      PROPERTIES

Potassium hydrogen sulfite is found in the form of a colorless or slightly yellow solution obtained by passing a current of sulfur dioxide through an aqueous potassium hydroxide solution.

Potassium Hydrogen-sulfite solutions used in wine-making usually contain between 281 and 375 g/l potassium hydrogen sulfite, these values corresponding to 150 to 200 g/l sulfur dioxide. are unstable and should not contain less than 70 g/l or more than 200 g/l SO2.

In the section ‘7. QUANTITATIVE ANALYSIS’, the second paragraph is modified as follows:

7.      QUANTITATIVE ANALYSIS

The sulfur dioxide (SO2) content of the solution, expressed in pp 100 (m/v), is 0.64 x n (concentration cannot be less than 150 70 g/l).