If the mask is marketed as possessing antibacterial or other biocidal properties or manufactured from an antibacterial material, the product is claimed to have a biocidal function. If the mask has been treated with a substance intended as a chemical deterrent to organisms such as bacteria, the requirements of the EU biocidal products regulation (528/2012) must be observed. According to the requirements, the labelling for products treated with biocidal substances must indicate the active substance used to achieve the product’s biocidal function.
The active substance must be approved in the EU or included in the EU risk assessment program for biocidal active substances in the applicable product-type. Description of product-types on the ECHA website.
For more information on biocidal products and treated objects, see the Tukes website.