FFP2 is a term used in the European Union and stands for filtering face piece (FFP) mask or filtering half mask. The 2 indicates a filtering capacity of a minimum of 94%.  Requirements for FFP’s are controlled in the personal protective equipment Regulation (EU) 2016/425 category III. The EN 149 standard defines performance criteria for the classes of particle-filtering half masks. These masks are considered to be similar to N95 and P2 respirators.