N95 masks are certified by the NIOSH agency in the United States, and are masks with a non-oily particulate protection efficiency of not less than 95%. KN95 masks are in line with the Chinese national standard "GB2626-2006-Respiratory Protective Equipment-Self-priming Filtering Anti-particulate Respirator", and non-oily A mask with a particle protection efficiency of not less than 95%.

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In terms of product classification and filtration efficiency, the protection levels of N95 and KN95 are equivalent. N or KN means that it is used to protect non-oily particles (such as viruses, bacteria, dust, etc.), and 95 means that the filtration efficiency of the mask is ≥95% under the testing conditions specified in the standard. Therefore, wearing N95 or KN95 masks correctly can reduce the exposure to pathogenic microorganisms in the air and effectively prevent viruses from entering the human body from the respiratory tract.

The meanings of N95 and KN95 masks are similar. N95 is a foreign standard, mainly the American standard, and KN95 is a domestic standard. Among them, N means that it is not resistant to oil, that is to say, it does not have much effect on some oily substances; 95 means the blocking effect on some bacteria, viruses and other microorganisms and particles, which can reach more than 95%.
Therefore, both of these masks are suitable for use by medical staff in the infectious disease department, especially for the current epidemic, they must be worn. Ordinary medical masks are only suitable for ordinary departments and civilians.
The above suggestions are for reference only, and specific examination and treatment must be consulted by a professional doctor.

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KN95 masks are masks with a filtration efficiency greater than or equal to 95% for particulate matter in our country, and N95 masks are masks with a filtration efficiency greater than or equal to 95% for particulate matter in the United States. The two are just different code names, but the actual effect is the same. Also, be sure to wash your hands before wearing a mask. After removing the mask, avoid touching the outside of the mask.

N95 and KN95 masks are only the difference in model and name, and the actual effect is indeed the same. The N95 level is the American standard, and the KN95 level is the Chinese standard. The technical requirements and test methods of these two levels are basically the same, but they belong to the standards of different countries.

The N95 mask is one of nine types of particulate masks certified by the National Institute for Occupational Safety and Health. N means non-oily particles, mainly refers to the filtration efficiency of 95% under the testing conditions specified by the NIOSH standard. As long as the product meets the N95 standard and passes the NIOSH review, it can be called an n95 mask, which is the standard in the United States. , the highest recognition in the world.
KN95 masks are masks with filtering efficiency for particulate matter in my country, and the filtering efficiency is greater than or equal to 95%. The key to wearing a mask is the tightness of the face, so you should read the instructions carefully before wearing it, and wash your hands before wearing it to avoid touching the inside of the mask with your hands.