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Respirators masks often have a tighter fit around the face than both surgical masks and single-use face masks. Rating Levels of Masks N95, FFP1, FFP2 & FFP3. The ratings are for the filtration level of the face mask, as well as other things. EN 149:2001+A1:2009 / ASTM F2100 / NIOSH. These are standards for face masks.[email protected] KN90 Face Masks, Reusable Safety Description: [email protected] KN90 Face Mask protects from dust and other large particles, and anti-inhalation allergens such as pollen. BFE(Bacterial filtration efficiency) >98% PFE(Nonoily particle filtration efficiency) >90% Features: MOUTH FACIAL MASK with DUST FILTER: High Standard Reusable Face Masks for Personal5 easy steps to choose the right air pollution mask | IQAirAccording to the Chinese national standard GB2626-2006, dust masks (non-oily particles only) are divided into the following levels according to filtration efficiency: KN90: 90% of particulate matter; KN95: 95% of particulate matter; KN100: 99.97% of particulate matter

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According to the Chinese national standard GB2626-2006, dust masks (non-oily particles only) are divided into the following levels according to filtration efficiency: KN90: 90% of particulate matter; KN95: 95% of particulate matter; KN100: 99.97% of particulate matter3M Masks & Respirators for Medical | 3M United States3M Filtron Surgical Mask, Off-The-Face/Anti-Fog Style 1838R. Add to compare Compare. 3M Earloop Procedure Face Mask 1820. Add to compare Compare. 3M High Fluid Resistant Procedure Mask with Face Shield 1840FS. Add to compare Compare. 3M Procedure Mask with Face Shield, Fog-Free 1820FS. Add to compare Compare.3M KN90 Protective Face Mask 9001 - With Elastic Ear LoopsThese 3M KN90 masks protect against dust and non-oily mist, but are also used to protect against fumes. high dust suppression efficiency kn90 face mask swiss 3M KN90 Protective Face Mask 9001 - With Elastic Ear Loops. You May Also Like. Add to Cart. high dust suppression efficiency kn90 face mask swiss High-Efficiency Electrostatic Cotton;

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