EN 149

Respiratory protective devices are protective devices intended to protect against hazardous substances in the aeriform state such as particles, vapours and gases by means of the filtering mechanism. These devices, which partially or completely cover the face, are made of filtering material or consist of a reusable structure fitted with replaceable filters.
The EN 149 standard specifies the minimum requirements for filtering half masks for protection of the respiratory tract against particles, except for those intended for escape. Aerosols and fine dust particles are among the most insidious health risks at the workplace, as they are practically invisible in the air we breathe.
Filtering half masks for protection against particles provide protection against these hazards. Divided into three classes, FFP1, FFP2, FFP3, they protect against aerosols, smoke and fine aqueous and oily dust. FFP1 half-face masks have an 80% filtering capacity; FFP2 half-face masks have a 94% filtering capacity; FFP3 half-face masks have a 99% filtering capacity.
The devices subject to the standard can be single use, marked “NR”, or reusable, marked “R”.
The device is marked with the letter “D” have undergone the Dolomite dust clogging test.