The control values established for individual substances (PFOS) depending on their applications by POPs, Annex I.
Or, as for PFOS,
When the content is 10 mg/kg or more (for mixtures purpose), it is regulated if no conditions for applications are defined.
When the content is 0.1wt% or more or when it is applied to textile at a concentration of 1μg/m2 or more (in articles or textile products), it is regulated if no conditions for applications are defined.