FFP1, FFP2 and FFP3 masks protect from fine airborne pollutants such as dust and aerosols or - in the case of FFP3 masks – also viruses. These masks are made of high-quality filter material and fit closely to the face in order to achieve the high filter performance necessary. Certified FFP masks are considered personal protective equipment (PPE) and meet the requirements of the European Standard for FFP’s EN 149. Masks without an exhalation valve can also prevent the wearer from spreading exhaled droplets and saliva. Some FFP masks without a valve are therefore additionally tested and approved as medical products according to EN 14683. Surgical masks primarily prevent the wearer from spreading droplets and saliva when exhaling. The masks themselves offer protection against liquid splashes such as blood, but not from fine aerosols. The medical products, also known as surgical masks, are tested and approved according to EN 14683.