International Code of Oenological Practices

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Treatment with silicon dioxide

II.2.1.10 Treatment with silicon dioxide


  • Colloidal solution of silicon dioxide: Processing aid

Definition :

Addition to must of a colloidal solution of silicon dioxide coupled with the addition of a gelatin solution.

Objective :

To achieve the flocculation of the gelatin with a view to clarification.

Prescriptions :

a)        The product is added to the must.

b)       Preliminary tests are necessary to determine optimal doses of colloidal silicon dioxide and of gelatin.

c)        The products added shall comply with the prescriptions of the International Oenological Codex.

Recommendation of OIV: