Article 8 3.

establish requirements for assessing the compliance of specific products with EU Ecolabel criteria (‘assessment requirements’);

specify, for each product group, three key environmental characteristics that may be displayed in the optional label with text box described in Annex II;

specify, for each product group, the relevant period of validity of the criteria and of the assessment requirements;

specify the degree of product variability allowed during the period of validity referred to in point (c).