Yes, the filters have been tested and accredited in a laboratory to meet EN14683:2019 category I and II air permeability and filtration efficiency standards. Test report number IN-00967 / 2020-1 issued by the accredited laboratory Centro Tecnológico Leitat - Acondicionamiento Tarrasense, designated by an EU country to evaluate the conformity assessment of certain products before their commercialization. Compliance with the referenced performance requirements of the harmonized European standard EN14683:2019 for medical masks ensures that a quality standard is met.