Post by Admin on Jan 28, 2021 17:16:00 GMT
FFP standards
en.wikipedia.org/wiki/FFP_standards
EN 149 is a European standard of testing and marking requirements for filtering half masks.[1] Such masks cover the nose, mouth and chin and may have inhalation and/or exhalation valves.[1] EN 149 defines three classes of such particle half masks, called FFP1, FFP2 and FFP3, (FFP = Filtering Face Piece) according to their filtering efficiency. It also classifies masks into “single shift use only” (not re-useable, marked NR) or “re-usable (more than one shift)” (marked R), and an additional marking letter D indicates that a mask has passed an optional clogging test using dolomite dust. Such mechanical filter respirators protect against the inhalation of particulates such as dust particles, droplets, and aerosols.[2]
Almost identical tests (but different markings) are used in Australia, New Zealand, Korea and Brazil. Similar standards are used in the United States, China and Japan. For example, EN 149 FFP2 masks have similar performance requirements to N95 masks in the United States and KN95 filters of China, and EN 149 FFP3 masks have similar performance requirements to N99 masks in the United States. However EN 149 test requirements differ somewhat from the U.S./Chinese/Japanese standards: EN 149 requires an additional paraffin-oil aerosol test and it tests at a range of different flow rates and defines several associated and permissible pressure drop levels.[3][4]
This article is about the European standard only. For information on mechanical air filters in general, and the types of respirators which meet the EN 149 standard, see mechanical filter respirator. For more detailed information on items made to the EN 149 standard, see filtering facepiece respirator and elastomeric respirator.
en.wikipedia.org/wiki/FFP_standards
EN 149 is a European standard of testing and marking requirements for filtering half masks.[1] Such masks cover the nose, mouth and chin and may have inhalation and/or exhalation valves.[1] EN 149 defines three classes of such particle half masks, called FFP1, FFP2 and FFP3, (FFP = Filtering Face Piece) according to their filtering efficiency. It also classifies masks into “single shift use only” (not re-useable, marked NR) or “re-usable (more than one shift)” (marked R), and an additional marking letter D indicates that a mask has passed an optional clogging test using dolomite dust. Such mechanical filter respirators protect against the inhalation of particulates such as dust particles, droplets, and aerosols.[2]
Almost identical tests (but different markings) are used in Australia, New Zealand, Korea and Brazil. Similar standards are used in the United States, China and Japan. For example, EN 149 FFP2 masks have similar performance requirements to N95 masks in the United States and KN95 filters of China, and EN 149 FFP3 masks have similar performance requirements to N99 masks in the United States. However EN 149 test requirements differ somewhat from the U.S./Chinese/Japanese standards: EN 149 requires an additional paraffin-oil aerosol test and it tests at a range of different flow rates and defines several associated and permissible pressure drop levels.[3][4]
This article is about the European standard only. For information on mechanical air filters in general, and the types of respirators which meet the EN 149 standard, see mechanical filter respirator. For more detailed information on items made to the EN 149 standard, see filtering facepiece respirator and elastomeric respirator.