uk personal protective medical 3ply face mask sale various specifications

Guidance on regulatory requirements for medical face

Protective respiratory masks complying with EN149:2001 may be classified into one of three categories, depending on their filter efficiency under laboratory conditions: Classification. FFP1. Total inward leakage 22%. Filtering Efficiency 78%. FFP2. Total inward leakage 8%. Filtering Efficiency 92%. FFP3.