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Standard models and specifications of masks
In addition, various countries and regions will also issue their own mask standards. For example, according to the standards formulated by the National Institute of Occupational Safety and Health, the common models are N95 and N99 masks. Masks FFP 1, FFP2 and FFP3 that meet the EU standards. Medical surgical masks, medical protective masks, N95 and FFP2 can all be used for the protection of medical institutions.
KN95 cannot be used in medical institutions, but ordinary people can choose to use it for epidemic prevention. Under the threat of coronavirus, masks become the first barrier of personal protection. However, masks of different types, standards and nationalities on the market are dazzling. Improper selection of masks will either lead to insufficient protection and increase the risk of infection. Either it is overprotective and wastes limited resources. How to choose masks has become a "hard core" skill that must be mastered.
Look at the standard mask
Look at the standard first. The standard determines the protective performance and protection level of the mask. Different standard masks are suitable for different people. Disposable medical masks that meet YY/T0969-20 13 standards have the same appearance and face tightness as medical surgical masks. The filtration efficiency of non-oily particles is not required, and it is suitable for general medical environment.
Medical surgical masks conforming to YY0469-20 1 1 standard do not require facial tightness, and the filtration efficiency of non-oily particles is ≥30%, which is suitable for clinical medical personnel to wear during invasive operations. The medical protective mask conforming to GB 19083-20 10 standard has good face tightness without an exhalation valve, and the filtration efficiency of non-oily particles is ≥95%. It is required to pass the synthetic blood penetration test and put forward requirements for microbial indicators.
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