Are N95 masks a medical protective mask?
A: The so-called N95 masks are not equivalent to medical protective masks
The “N95 mask” implements the requirements of the American standard 42 CFR 84, and the filtration efficiency*≥95%. The “medical protective masks” mentioned in the “Guidelines for Wearing Masks” implement the Chinese national standard GB 19083-2010*.
Among them, the filtration efficiency*≥95% belongs to the class 1 medical protective mask, which is our popular “N95 medical protective mask”, pay attention to “medical”.
What is a particulate protective mask?
A: “Particulate protective masks” refers to meeting the national standard GB 2626-2019*. Among them, those that meet this standard and have a filtration efficiency*≥95% are the “KN95 particulate protective masks” that we often talk about.
The filtration requirements* and protection level of this mask are comparable to those of medical N95 masks, which can be used for respiratory protection of people in high-risk areas.
How long does it take to change the head mask?
The “Guidelines for Wearing Masks” recommends that the cumulative wearing time should not exceed 8 hours, and the masks should be changed at that time. Or if the mask is found to be damaged or soiled during wearing, it should be replaced in time.
