What is the difference between KN95 mask, N95 mask,

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Original title: What is the difference between KN95 mask, N95 mask, medical mask, surgical mask FFP2 and other masks? Summary: Over the past few days, people all over the country have been paying attention to face masks: "medical face masks", "medical nursing face masks", "surgical mask," "medical protective face masks," as well as "N95," "KN95," even "FFP1 face masks," and "FFP2 face masks.". Aren't you dazzled? It looks like a mess, so many different names, different types of masks, will you really choose? Today, we will introduce in detail the different use scenarios of KN95 masks, N95 mask, medical masks and other masks. During the epidemic, everyone put on masks! In addition to the difficulty of buying masks, there is also the difficulty of buying masks. Now there are so many kinds of masks on the market. How can we distinguish and choose among all kinds of masks? It is mainly classified into two categories: one is medical masks, and the other is civil masks. Surgical mask, medical protective masks, N95, FFP2 can be used in medical institutions for protection. KN95 can not be used in medical institutions, but ordinary people can choose by themselves. What is the difference between other masks? Let's take a look at this table first. Table: Classification of common masks Standards for the use of common masks Other masks of the same type of disposable medical masks have national standards, which can also refer to the technical standards attached to the registration certificate: For example: YY/T 0969-2013 Medical: Medical surgical mask for preventing droplets and body fluids in general diagnosis and treatment environment YY0469-2011 Old version YY 0469-2004 Medical: Prevent body fluid droplets from splashing during invasive operation Medical protective mask GB19083-2010 The old version of YY 0469-2003 Medical: the highest implementation standard, Prevent solid particles, droplets, blood KN95GB2626-2019 Civil: KN90/KN95/KN100 (also KP series) N95 American NIOSH42CFR84-1995 standard N95/N99/N100 (also R series, P series) FFP2 EU EN149-2001FFP1/FFP2/FFP3 1. Medical Disposable medical mask (medical nursing mask) Disposable medical masks, medical masks,Full Body Disposable Coverall, medical nursing masks, the general implementation standard: YY0969, but there are also many for the enterprise's own design and production, generally can not guarantee the filtration of pathogenic microorganisms, dust, in the hospital is generally used for routine care, the main role is to block the daily cross-contamination between medical staff and patients, and there is no particularly high requirement. If it is used by the public, that is to say, it is used to block bad breath and pretend, the actual effect of protection is not very ideal. Expand the full text surgical mask 2. Medical : Medical surgical mask: YY 0469-2011 Surgical mask must be produced according to the medical standard YY0469-2011. If the enterprise standard set by the enterprise itself meets or even exceeds the requirements of YY0469, it can also be printed on the outer package of the mask (therefore,Medical Quickly Delivery Antivirus Coverall, it is not necessary to have YY0469 to be qualified, and the specific identification depends on the name of the mask and the content of the enterprise standard); Surgical masks are mainly used for invasive operations such as surgery and catheterization in hospitals, and the key monitoring departments of sensory control generally require the use of such masks. YY0469 requires surgical masks to have a bacterial filtering performance. Generally, the filtration efficiency of non-oily particles should be more than 30%, and the filtration efficiency of bacteria should be more than 95% (note that this is not the meaning of N95, and should not be confused with medical masks). Surgical mask also has the requirement of synthetic blood penetration (which can be simply understood as impermeability). When making masks, enterprises usually divide them into three layers: the internal absorbent layer, the middle filter layer, and the external waterproof layer. Each layer has a special role (here is the key point, which will be used later). 3. Medical : Medical protective mask Medical protective masks, followed by disposable medical nursing masks, also known as medical protective masks, conform to GB19083-2003 standards, and important technical indicators include non-oily particle filtration efficiency and airflow resistance. The filtration efficiency of sodium oxide aerosol with a diameter of (0.24 ± 0.06) μm is not less than 95%, that is, it meets the N95 and above levels. The inspiratory resistance does not exceed 343.2 Pa. 4. Civilian : KN type mask: GB2626-2006/2019 KN type mask Because of the different workplaces, the particulate matter that people are exposed to can generally be divided into two categories: oily and non-oily, of which the "KN" mask is mainly used to protect non-oily particulate matter, while the "KP" mask can protect both oily and non-oily particulate matter, such as the chemical industry is exposed to more oily particulate matter (such as paraffin). KP-type masks are generally used; KN-type masks are mainly used in other industries, including ordinary civil use (of course, KN95 Face Mask ,Virus Prevention Mask 3 Ply with Earloop, some civil haze masks can use KP-type masks). According to the requirements of GB2626 standard, KN type masks are divided again according to their filtering performance on non-oily particles, so we are familiar with KN90, KN95 and KN100 masks. Among them, KN95 mask is one of the most common masks, which has a filtering performance of more than 95% for non-oily particles (detected by sodium chloride). See the following table for details. Table: Filtration efficiency Type and class of filter element Sodium chloride particulate matter test Oil particulate matter test KN90 ≥ 90.0% Not applicable KN95 ≥ 95.0% KN100 ≥ 99.97% KP90 Not applicable ≥ 90.0% KP95 ≥ 95.0% KP100 ≥ 99.97% See here, I don't know if you have found a problem, just before, I have told you that the medical surgical mask (YY0469-2011) requires that the filtering performance of non-oily particles is ≥ 30%, which is much lower than the requirement of ≥ 95% of KN95 mask, so many people naturally think that: Especially the KN95 mask is definitely better than the medical surgical mask! Is this absolute? Surgical masks have anti-penetration requirements, generally divided into three layers, the outermost layer is the waterproof layer, the main reason for using masks in the medical environment is to isolate bacteria, and once bacteria adhere to the outer surface of the mask, it is very easy to follow the wet mask directly into the mask, so anti-penetration is very important! Throughout GB2626, there is no standard requirement for KN-type masks to be waterproof, not only KN-type masks, but also KP-type masks, that is to say, qualified masks that meet all GB2626 standards do not have anti-penetration requirements. At this point, KN-type masks are not as good as surgical masks! FAQ 1: Is it good or bad to have a breather? Respirator with breathing valve Because doctors and patients wearing masks can not guarantee that they are healthy and virus-free (infectious during the incubation period), and the airflow of masks with exhalation valves is only one-way protection, which can not cut off the transmission route very well. From the perspective of epidemic control, two-way protection is the most correct way, so this kind of masks is not recommended. For a detailed introduction of the breather valve, you can see "What is the difference between KN95 mask with breather valve switch and without breather valve? Which protective effect is better?" FAQ 2: About the standard of protective mask: Which is better, GB19083-2010 or GB2626? Misunderstanding: There is no "N95" in the GB19083 standard of our country, but "Grade 1", "Grade 2" and "Grade 3" are used to express the filtration efficiency grade. Generally, Grade 1 can meet the requirements of "N95/KN95". That is to say, as long as any "medical protective mask" meets the GB19083 standard, it has absolutely reached the filtration efficiency of N95 and KN95. Difference: GB19083 is the highest implementation standard for medical use. This is the implementation standard for medical use. You will find that there is no breathing valve for this kind of mask, and it is used in medical scenarios. Of course, if you can buy it, you can also use it outside. GB2626 is usually a mask for civilian use, which is mainly used for protection in non-medical scenarios such as painting, welding, industry and haze. For example, the most common 3m brand KN95 masks are of this type! In addition, like the surgical mask of YY0469-2011, GB19083 also puts forward the requirement of "synthetic blood penetration", and also adds a parameter requirement of "surface moisture resistance", which clarifies the protective effect of medical protective masks on blood and body fluids, which is not found in GB2626 (KN type). See any difference? There is no anti-flying liquid splash for civil use, which is only available for medical use. Sum up If you feel a little dizzy about the above academic content, let's use another picture to compare the differences between the most common masks: Table: Comparison of the most common masks Item Surgical respirator KN type respirator Technical standard for medical protective respirator YY0469-2011GB2626-2006/2019 GB 19083 -2010 Filtration of non-oily particles ≥ 30% ≥ 90% (KN90) ≥95%(KN95) ≥ 99.97% (KN100) ≥ 95% (Grade 1) ≥ 99% (Level 2) ≥ 99.97% (Grade 3) of synthetic blood penetration for liquid requirements; Infiltration should not occur; Urface moisture resistance; no requirement for synthetic blood penetration; Infiltration should not occur; Surface moisture resistance; Only a small area of the exposed surface that is not connected is wetted or not wetted; breather valve/may have, may not have, other slightly breather valves that only protect the wearer slightly 1. The KN type mask conforming to GB2626 can not be used for medical operations, especially for high-risk operations such as tracheotomy and tracheal intubation, which may splash, because it can not guarantee that the mask will not be wet. 2. Masks above Grade 1 conforming to GB19083 can not only achieve 95% filtration, but also prevent liquid penetration, and can be used for various operations in medical institutions. 3. It conforms to the surgical mask of YY0469, with less than 95% filterability, but it can prevent liquid penetration. Because its tightness with the face is not as good as that of medical protective masks, it is generally not used for the protection of high-risk operations, but it can meet the operation of ordinary risks. The above are all choices for medical institutions, so how should the public choose? 1. If you can choose surgical masks, try to choose surgical masks. If not, choose civil standard masks. (Comfort considerations) 2. If you can choose a mask without a breather valve, try to choose a mask without a breather valve. For a detailed introduction about the breather valve, you can see "What is the difference between KN95 mask with and without breather valves? Which one has better protective effect?". (For the safety of others) If you really don't have a mask, stay at home and don't go anywhere! EU CE certification: Due to the increase in the number of applications, many institutions have suspended the issuance of certificates. Customers who have not yet processed the certificates should do so as soon as possible. Otherwise, it may take nearly 100,000 yuan and 2 months to get the certificates (the issuance of certificates may be completely stopped next week); FDA of the United States: It may not be able to carry out normal certification on the 20th,Full Body Disposable Coverall, and it needs to be reopened in April. It cannot be ruled out that the information is inaccurate. I can't confirm whether it's true or not. It is suggested that enterprises apply as soon as possible. If you are considering to be a production-oriented enterprise, you can apply for CE or FDA certification first, and then do the follow-up work. Very urgent!!! Information source: "Tax Raising Star" official account return to Sohu to see more Responsible Editor:. zjyuan-group.com

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