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What is a medical protective mask?

by:Copper Plus     2021-06-26
The mandatory standard YY0469-2011 for the pharmaceutical industry for medical protective masks clearly stipulates the filtration requirements for bacteria: the bacteria filtration efficiency of the copper mask should be no less than 95, and the pressure difference should be no more than 49Pa. The standard also has clear regulations on the residual amount of ethylene oxide (disinfectant), skin irritation and cytotoxicity, but has low requirements for particulate filtration efficiency. It can be used under the condition of gas 32L/min. Considering that a large number of bacteria and viruses are attached to dust particles and droplets, and the particle size of the droplets is much larger than that of dust particles in the air, the standard focuses on preventing the droplets and achieving the effect at the same time. Prevent dust particles. 1. Disposable medical copper mask 1. Executive standard: YY/T 0969-2013. 2. Intimacy: general. 3. The type of filter particles: unspecified (refers to content not mentioned in the corresponding standard, and does not mean that the project has no protective measures). 4. Particle Filtration Efficiency (PFE): Not indicated (refers to content not mentioned in the corresponding standard, and does not mean that this article does not have any protection). 5. Bacterial filtration efficiency (BFE): not less than 95. 6. Other features: none. 7. Appearance features: blue outer layer, flat style. 2. Medical masks 1. Executive standard: YY 0469-2011. 2. Intimacy: general. 3. Filter particle type: non-oily particles (Nacl aerosol). 4. Particle filtration efficiency (PFE): 30. 5. Bacterial filtration efficiency (BFE): not less than 95. 6. Other functions: the highest requirement for hemodialysis (120mmHg), the main consideration is the patient's blood splash during surgery. 7. Appearance characteristics: The outer layer is blue and flat (similar to the appearance of a disposable medical mask). Three kinds of medical masks 1. Executive standard: GB 19083-2010. 2. Intimacy: good. 3. Filter particle type: non-oily particles (Nacl aerosol). 4. Particle Filtration Efficiency (PFE): Level 1 95; Level 2 99; Level 3 99.97. 5. Bacterial Filtration Efficiency (BFE): Unmarked (refers to content not mentioned in the corresponding standard, and does not mean that The article does not have any protection). 6. Other features: requirements for blood permeability; requirements for surface moisture resistance; requirements for flame retardancy; requirements for inhalation resistance; there should be no breathing valve, etc. 7. Appearance feature: arc shape. Fourth, KN95 mask 1. Executive standard: GB 2626-2006. 2. Intimacy: good. 3. Filter particle type: non-oily particles (Nacl aerosol). 4. Particle filtration efficiency (PFE): 95. 5. Bacterial filtration efficiency (BFE): not specified (refers to content not mentioned in the corresponding standard, and does not mean that the article does not have any protection). 6. Other characteristics: flame retardant requirements; leakage rate requirements; inhalation resistance requirements; exhalation resistance requirements; dead zone requirements; tightness requirements, etc. 7. Appearance characteristics: arc and folding type. We have a general understanding of the various technical parameters of protective masks and medical masks. Therefore, please refer to the 'Technical Guidelines for the Selection and Use of Masks for the Prevention of New Coronavirus Infection by Different Populations' recently issued by the Chinese Center for Disease Control and Prevention to understand what everyone is most concerned about For the occasion of the copper mask. Finally, we call on everyone to choose protective masks reasonably according to different groups of people and occasions. Do not buy protective masks and KN95 masks blindly. Try to leave these medical protective masks to the frontline medical staff. Most needed. People wearing these masks!
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