KN95 mask cannot be used?
Ordinary mask knotted into N95?
is all wrong!
KN95 mask cannot protect against the new coronavirus? The rumored online that "only five types of masks can prevent the epidemic" targets masks common in daily life. In the market, in addition to the masks produced according to the five standards listed in the information, there are masks of different materials and patterns. It is difficult to see the difference from the appearance of many masks; but the implementation standards marked on the packaging can be distinguished whether they can play a protective role. Masks that do not use relevant standards in are likely to have only aesthetic or warmth.
As for KN95 and N95 masks, they can be used for protection against the new coronavirus. However, they are different from the types of masks corresponding to the above five standards and belong to the type of "particle protective masks". The corresponding standards include my country's national standards "GB 2626 "Respiratory Protection Self-priming Filter Anti-particle Respirator", "US NIOSH (US Institute of Occupational Safety and Health) Certification", "European EN149", etc. Currently, KN95 or N95 masks are different from "medical protective masks", " medical surgical masks ", " disposable medical masks ", etc., and are not regulated as medical device . But many authoritative agencies have given positive responses to their protective effects.
For example, Chinese Center for Disease Control and Prevention clearly stated that the barrier capacity of particulate protective masks is the same as that of medical protective masks. In emergency situations, it can be used as a supplement to medical protective masks, but it cannot be used in areas such as operating rooms with hygiene requirements. It can be applied to people with higher risk exposure, such as medical staff working in emergency departments, on-site epidemiological investigators, etc.
However, is more filterable because KN95 and N95 masks are more likely to cause discomfort when worn for a long time. Smokers, emphysema patients, obese people, and other groups who are prone to breathing are prone to difficulty, wearing N95 masks will make it worse and even worsen breathing problems. Therefore, people only need to choose "medical protective mask", "medical surgical mask", "disposable medical mask" and "daily protective mask" for daily protection; when going to high-risk places, you can choose KN95 or N95 masks, but be careful not to wear them for too long.
Can ordinary masks be knotted into N95 masks?
The truth: No.
A video circulated on the Internet says that folding an ordinary mask in half, tying the ear straps on both sides before wearing it can increase the sealing of the mask and achieve the effect of an N95 mask. There is an exaggeration to the statement of .
Wear two ordinary masks at the same time
can double the protective effect?
The truth: No.
Wearing a two-layer mask not only does not increase safety, but also may cause wear displacement due to friction between masks, which will affect the air tightness of the masks. In daily protection, choose a mask of the right size according to your face shape and pay attention to the fit between the mask and the face.
The higher the mask level, the better?
masks need to shake before they can be used,
will otherwise be poisoned?
Common errors
Masks are temporarily stored, what should I do
. Can be hung in a clean, dry and ventilated place. . A mask with independent packaging should be removed and folded in half and put back into the original packaging. . Disinfect the table with alcohol and spread it with clean tissue. Put the mask in half and place it on the tissue, and cover it with a layer of tissue above. . Fold the A4 paper in half and fold the mask in half, put it in the A4 paper, and do not put the mask strap in it. . Bring your own storage bag, put the mask in, pay attention to disinfection and replace it regularly. You should also pay attention to these when wearing masks
Source: Shanghai Internet rumor refutation
Editor: Huang Fu Yuqi
Editor: Huang Qing Hou Jiayin
Editor-in-chief: Li Chun
Producer: Hu Yang
Producer: Shenyang
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