En »kvalitetsændring« forekommer, når en medlemsstat finder, at en substitution har medført en markant ændring i den måde, hvorpå substitutionsprodukttilbuddet opfylder formålet i det forbrugssegment, det tilhører.
“Quality change” means that a replacement has resulted in a significant difference in the degree to which the replacement product-offer serves the consumer purpose of the consumption segment to which it belongs, whenever the Member State judges so.