Respirator - Mask Filters
A respirator is a device designed to protect the wearer from inhaling harmful dusts, fumes, vapors, or gases. Respirators come in a wide range of types and sizes used by the military, private industry, and the public. Respirators range from cheaper, single-use, disposable masks to reusable models with replaceable cartridges.
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European standard EN 143 defines the following classes of particle filters that can be attached to a face mask:
|Class||Filter penetration limit (at 95 L/min air flow)|
|P1||Filters at least 80% of airborne particles|
|P2||Filters at least 94% of airborne particles|
|P3||Filters at least 99.95% of airborne particles|