How long will the N95 mask last| KENJOY

How short N95 masks are in the market, I believe everyone understands that in the case of N95 masks, those lucky enough to have N95 masks may want to know how to reasonably reuse N95 masks, then follow the kn95 mask wholesale to understand whether they can be reused.

What is an N95 mask

N95 respirator is the common name for the filter grade disposable respirator (N95) listed in 42CFRPART84 by the national institute for occupational safety and health (NIOSH). China KN95, Japan RS2/RL2, Korea KF94, EU FFP2 and other countries have corresponding standards.

Now domestic KN95 masks may be far more widely used in China than imported N95 masks, so it is mainly interpreted according to domestic standards.

According to the GB2626-2006 national standard of disposable mask KN95 class masks, this is N95(KN95) masks.

Whether it can be reused and disinfected

The 2014 review interpreted the CDC's recommendation that reuses be limited to five reuses if necessary, but the limit is vague. The virus on the mask is extremely unlikely to escape the mask and be inhaled, but it is possible that hands touch the mask and then transfer to hands and infect the body after touching the nose and eye membranes.

In 2018, the study found that researchers were able to pick up the virus from the mask and confirm that the mask absorbs the virus and remains active temporarily, but there is no evidence of transmission of the virus from the mask to the hands, and research remains blank.

In view of the above situation, the risk of infection is very low if you can ensure that you do not touch the mask in daily life and wash your hands after touching them, and the mask is not disinfected. And if you're using it in an area where there's clear exposure, like a hospital, you need to disinfect it.

Use advice

N95 masks decreased mainly with time of use, with a 1.2% decrease averaging 8 hours per day and dropping to 90% or N90 levels after 33-40 hours. At least 5 days of use for 8 hours a day, consistent with the CDC's recommendation of limited circulation of 5 times, the protective effect is still acceptable.

1. If it is not worn for a long time, the performance degradation can be ignored after static disinfection and storage in a closed dry container.

2. Store in general environment and avoid high humidity.

3. Try to ensure that the shape of the mask is not damaged, wear and store with care.

4. The service life of N95 masks with breathing valves may more than double.

5. The reduction of the filtration efficiency at the nano level is mainly concentrated at the sub-nano level, where the filtration efficiency is mainly caused by physical barrier.

6. Theoretically, PFE can be reduced to 30% after 430 hours of use for 54 days, 8 hours a day in daily environment, which is comparable to surgical masks in China.

The above is a simple description of the reasonable reuse of N95 masks. For more information about N95 masks, please contact our mask factory.