What does N95 mask mean

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Time of issue:2021-05-27 17:00
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(Summary description)N95 mask refers to a ma微區sk with a protection ef答呢ficiency of not less than 95% for non聽姐-oily particles certifie多好d by the United States NIOSH (Nationa煙件l Institute of Occupationa雨生l Safety and Health).

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What does N95 mask mean

(Summary description)N95 mask refers to a mask通志 with a protection efficiency of 關還not less than 95% for non-o水窗ily particles certified by the Un民地ited States NIOSH (Nati她拿onal Institute of Occupational S秒年afety and Health).

Categories:Company News
Author:
Origin:
Time of issue:2021-05-27 17:00
Views:

Information

N95 mask refers to 用們a mask with a protection efficiency家河 of not less than 95% for no劇校n-oily particles certified by the Un開得ited States NIOSH (National I朋區nstitute of Occupational Safety and Hea南煙lth).

The N95 mask is one of the nine anti-章工particulate masks certified 術從by NIOSH (National Ins間自titute of Occupational Safety 綠議and Health). "N" means這東 that it is used to protect線人 non-oily particles (such as viruses,多也 bacteria, dust, etc.); "95" means 間討that the filtration efficiency of t道裡he mask is ≥95% unde理術r the testing conditions specified 我還by the standard. N95工兒 mask can effectively pr話新otect the particles suspended in the 綠長air.

Why can I wear N95 ma姐話sks during the new coronaviru兒老s epidemic?

1. The spread of the ne亮老w coronavirus requires a h睡行ost vector. Once it leaves 腦可the body of the host (such a視議s animals, humans), it間化 will die in a short time生有, but the virus can be sp鐘一read through contact (such as 物志hand pollution), droplets在事, etc., among which coughing, I近遠n speech, droplets produced 喝人when sneezing are the main ca議務rriers of transmission. If a new 錢紅coronavirus carrier sneezes in a錢還 confined space (such黑木 as a train or airplane, etc不很.), the dropped droplets are事數 easily inhaled by another 路亮person and may be infected. Therefore,黃數 it is necessary to wear a mask志我 for protection.

2. Since the virus and its transmis對妹sion medium (droplet快花s) also exist in the form of par媽呢ticles, and the diameter of the 車少particles is relatively small, th來少e N95 mask filtering mechani拿嗎sm is to filter these fine particles 用劇through the high-perfo鐵還rmance filter materi校都al in the mask. The efficiency 請但test method uniformly 商呢uses particles with an aerodynamic 樂村diameter of 0.3 microns, which 會刀is the most difficult to filter am事謝ong the diameters of particles with a 化商known normal distribution. At the same 的不time, N95 masks also have stric鐵多t requirements for t信議heir tightness. Therefo會綠re, the correct wearing of N95 mask爸人s can reduce the exposure to pathogen紙用ic microorganisms in the air an綠林d effectively prevent viruses from ent的自ering the human body from the都風 respiratory tract. However, the雪還 wearer should also pay atte下離ntion to the prevention of 著司hands, eyes, etc., so as not to be in作業fected through other 遠現means.

How often do I replace N95 mask道生s?

Under normal circumstances, if it男對 is used outdoors, such as章視 subways, buses, superm短月arkets, shopping malls and other public場遠 places, N95 masks need to b鐘什e replaced every 4-6什好 hours, but if it is in a new兵如 pneumonia virus-affected area, it is 員白recommended to be in北木 time in 2 hours Replace the 樹輛N95 mask once.

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