Honeywell official detailed explanation of the difference between N95 mask and KN95 mask _ protection

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Original title: Honeywell official answers the difference between N95 mask and KN95 mask in detail Play to understand the mobile phone network information, recently Honeywell official released a detailed article on the N95 mask, KN95 masks and other similar level masks for a detailed answer. The official content is as follows: What is N95 mask? What's the difference with KN95 mask? What other masks of the same class are there? N95 mask refers to masks certified by NIOSH (National Institute for Occupational Safety and Health) with a non-oily particle protection efficiency of not less than 95%; KN95 respirator refers to a respirator with a non-oily particle protection efficiency of not less than 95% in accordance with the Chinese national standard GB2626-2006-Respiratory Protective Equipment-Self-priming Filter Particulate Respirator. Neither N95 nor KN95 masks are the names of specific brands or products, but represent the protection level of masks. Where, "N" or "KN" indicates that the respirator is used to protect non-oily particles (such as viruses, bacteria, dust, etc.); "95" indicates that the filtration efficiency of the respirator is ≥ 95% under the test conditions specified in the standard. Whether it is the national standard of China or the test standard of NIOSH of the United States, the protection level of N95 and KN95 is equivalent in terms of product classification and filtration efficiency. In addition, the protection level of N95 and KN95 is equivalent to that of FFP2 masks certified according to the European EN149 standard, that is, the filtration efficiency of masks is more than 94% under the testing conditions specified in the European standard. Masks that have passed the European standard EN149 certification and reached FFP2 level are marked with the words "EN 149:2001 + A1: 2009 FFP2". Why can we wear N95 or KN95 masks during the outbreak of novel coronavirus? The transmission of new coronavirus requires a host vector, once it leaves the body of the host (such as animals, humans), it will die in a short time, but the virus can pass through contact transmission (such as hand contamination), droplet transmission, etc., in which the droplets produced by coughing, speaking and sneezing are the main transmission carriers. If a new coronavirus carrier sneezes in a confined space (such as a train or plane), the droplets flying out can easily be inhaled by another person, and it is possible to be infected. Therefore, it is necessary to wear a mask for protection. Because viruses and their vectors (droplets) also exist in the form of particles, and the diameter of particles is relatively small, the N95 or KN95 mask filtration mechanism filters these fine particles through the high-performance filter material in the mask. In the efficiency test method, particles with an aerodynamic diameter of 0.3 microns are uniformly used, which is the most difficult to filter in the known normal distribution of particle diameters. At the same time, KN95 or N95 mask also have strict requirements for its tightness. Therefore, wearing N95 or KN95 masks correctly can reduce the exposure level of pathogenic microorganisms in the air and effectively prevent viruses from entering the human body from the respiratory tract. However, wearers should also pay attention to the prevention of hands, eyes and so on, so as to avoid infection through other ways. Expand the full text How to correctly understand cotton, medical surgery,Medical Quickly Delivery Antivirus Coverall, KN95/N95 and other types of masks? Ordinary gauze, cotton cloth or single-layer sponge masks that can not reach N95/KN95 level are not recommended because they do not have effective filtering efficiency. Surgical mask (such as ordinary medical plane masks) need to be selected in accordance with the relevant standards of the pharmaceutical industry. Although these masks have certain requirements for the filtration efficiency of non-oily particles and bacteria, there is no clear requirement for the overall tightness (leakage rate) of the masks in the corresponding standards, so the applicable places and people are limited. KN95/N95 mask can effectively protect the particles suspended in the air, and its tightness is good, so it is the best choice during the epidemic period. However, it is not suitable for the protection of medical workers in the place where high-pressure body fluid is splashed. Is there any difference between N95 and KN95 masks with and without exhalation valves for the wearer to prevent the infection of the novel coronavirus? Because that N95 and KN95 mask have high filtering efficiency and good tightness, the mask have certain breathing resistance when being worn, and the mask with the exhalation valve can effectively reduce exhalation resistance and reduce heat accumulation, so the mask with the exhalation valve is more comfortable to wear, and a wearer is not suffocate. The valve plate of the exhalation valve is automatically opened along with the air flow when exhaling, the moist and hot air of the mask is quickly discharged,Medical Full Body Coverall, and the valve plate is automatically closed when inhaling to isolate the entry of particles such as external dust, bacteria or viruses, so the exhalation valve is called a one-way valve. Therefore, KN95 and N95 mask, which meet the standards and are certified to be qualified, can achieve the desired protective effect on the wearer himself under the correct wearing conditions, regardless of whether there is an exhalation valve. However, if the wearer has been infected with the novel coronavirus or is suspected of being infected, the N95 or KN95 mask without an exhalation valve should be preferred. Because the gas from the exhalation valve is discharged directly without filtration, the virus may be attached to droplets or air and transmitted to people around it. Can the KN95 particulate respirator be cleaned and reused? Not allowed. KN95 masks use electrostatic adsorption to filter particles. Cleaning and disinfection will cause static dissipation, thus reducing the protective effect of masks. At the same time, it will also bring secondary pollution of masks, causing unpredictable risks and injuries to users. How long is the KN95 mask used? In GB2626 standard, KN95 mask is also called disposable mask. Generally speaking, masks should be replaced in time when they are contaminated, damaged, wet, or obviously feel increased respiratory resistance during wearing. During the epidemic, considering the infectious hazards of the virus, doctors often recommend replacement every 4 hours, which will also cause the depletion of consumables. The current guidelines of the Centers for Disease Control and Prevention (CDC) recommend a variety of ways to save consumables. For example, masks are given to people who need them more, such as medical staff and patients. Ordinary healthy people can appropriately extend or repeat the use of KN95 masks under acceptable conditions, KN95 Face Mask ,Medical Disposable Coverall, provided that they wear and take off the masks without contamination, and must put the masks in sealed bags and then in clean, dry and pollution-free places. The repeated use of masks will have certain risks. Once the masks are exposed to pollutants, they should be classified and treated according to the relevant medical or pollutant waste disposal regulations. What else should we focus on besides the filtering efficiency of the masks used during the epidemic? In addition to the familiar filtration efficiency and respiratory resistance, we must also pay attention to the fit of the mask, which is the premise to ensure that the mask can achieve the expected level of protection. If the mask can not completely fit the user's face, the breathing air will preferentially enter through the leakage gap under the action of pressure difference, resulting in a significant reduction in the protective effect of the mask. In addition, beard, hair and other reasons can lead to the mask can not fit well. Therefore, when you wear a mask, you should wear it correctly according to the recommended way. Does the same mask meet the needs of the whole family, and how do children choose the right mask? Because of the differences in people's facial features, the effect of the same mask on different people may be slightly different. a. Some adult masks will be available in large, medium and small sizes , can be selected according to different face sizes, B. Children with small faces Please choose a smaller size of children's professional mask, such as Honeywell Cute Pet Series, which meets the KN95 rating and fits children's faces better. When parents choose and wear children's masks for their children, they should fully identify some risks, such as (including but not limited to): children may not be able to wear or use masks correctly, and have no ability to stop using masks when they feel uncomfortable, so it is recommended that children should use masks under the supervision or accompanied by their parents. How to wear the folding KN95 mask: Wearing a particle protective mask correctly can help to improve the fit between the mask and the face. The correct wearing method is as important as choosing a mask that meets the protective requirements. Is it better to wear more than one mask to prevent the spread of the virus? No. Wear correctly to ensure good fit and air tightness, only one N95 or KN95 mask can achieve the desired protective effect. Multiple overlapping not only easily causes poor fit, but also increases respiratory resistance and wearing discomfort. Is it because the epidemic is serious that we need to wear masks? Usually common cold, cough, sneezing and other symptoms, or in the season of high incidence of influenza, as well as haze weather, are recommended to wear masks. What are the health precautions for wearing masks? Please wash your hands before and after wearing the mask, and avoid touching the outside of the mask during the process, so as not to contaminate your hands or the mask. For masks that have been exposed to viruses, bacteria and other pollution sources, they should be classified and treated according to the relevant medical waste and pollutant treatment regulations immediately after use, and their hands should be washed. How to deal with the mask after use? During the epidemic, the used masks may be covered with bacteria and viruses. In addition, many cities have implemented garbage classification and treatment, so it is recommended not to discard them at will. Netizens have made suggestions, such as boiling water, burning, cutting up and throwing away, which are not scientific. Xiao Huo quoted the suggestion of CCTV news here, which should be classified according to the situation. Medical institutions: directly put masks into medical waste garbage bags as medical waste. Ordinary healthy people: less risk, can be thrown directly into the "hazardous waste" trash can. For people suspected of suffering from infectious diseases, the used masks should be handed over to the relevant staff for disposal as medical waste when they are treated or quarantined. For patients with fever, cough, sneezing symptoms, or people who have been exposed to such people, 75% alcohol can be used to disinfect the mask and then put it into a sealed bag and throw it into the trash can, or the mask can be thrown into the trash can first, and then 84 antiseptic solution can be sprinkled on the mask for disinfection. How to ensure that the Honeywell masks purchased are authentic? In view of some recent online videos such as recycling of second-hand masks and manufacturing of counterfeit masks, Xiao Huo seriously explained here that counterfeit and inferior commodities not only have no expected protective effect, but also may have material residues due to substandard hygienic quality. The harm of second-hand masks is even worse. Honeywell recommends that you purchase KN95 and N95 mask from regular channels to ensure that all masks purchased by Honeywell through regular channels are authentic. Is it possible to completely eliminate the risk of infection by wearing a KN95 mask? Wearing KN95 masks correctly can greatly reduce the risk of infection, but this does not mean that wearing masks can completely eliminate the risk of infection. It is suggested to strictly abide by the prevention and isolation requirements stipulated by the state during the epidemic period, wear masks correctly, and maintain hand/eye hygiene. Is it reliable to make a mask at home? Unreliable. There are many self-made mask tutorials on the Internet. The basic materials are recommended cotton yarn, wool, canvas, etc. These materials have very limited effect on blocking germs or other particles, and can not guarantee good sealing, and ultimately can not play an effective protective role, so they are not recommended. When the disposable KN95 mask is not available, can we use the half mask with replaceable filter cotton that also meets the KN95 standard (such as Honeywell 7200 series products (7200MC/7200LC))? OK. Because its replaceable filter cotton also meets the standard requirements of China's national standard GB2626-2006-Respiratory Protective Equipment-Self-priming Filter Particulate Respirator KN95. The filter cotton in the mask can be replaced with a new one. Moreover, compared with the disposable KN95 mask, the 7200 half mask, because the silicone material used is softer, easy to fit the shape of the face contour, plus the headband/neckband can be adjusted according to the size of the head/neck, this half mask has better fit and better protective effect. At the same time, it also has an exhalation valve, which is more comfortable to use. Similarly,Antivirus Disposable Mask with CE Certificate, for people who have been infected or suspected of being infected, it is not recommended to use it; accessories such as mask body and headband need to be disinfected with 75% alcohol before recycling. Can KN95 respirator fit with goggles? OK. Honeywell goggles can be used with Honeywell masks and half masks, especially for health care workers. Medical experts also suggest that the use of goggles is more helpful to protect against novel coronavirus infection. Return to Sohu to see more Responsible Editor:.


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