1.Wash your hands before wearing a mask, or avoid touching the inner side of the mask during the process of wearing a mask to reduce the possibility of contamination of the mask.
2. Distinguish the inside, outside, top and bottom of the mask; KN95 Mask has the printed side as the outside; one end of the metal strip/sponge strip is above the mask.
3. Do not squeeze the mask with your hands, including KN95 masks, which can only isolate the virus on the surface of the mask. If you squeeze the mask with your hands, the virus will wet the mask with droplets, and there is still a chance of infection.
4. Be sure to make the mask and the face have a good close fit. The simple test method is: After putting on the mask, exhale forcefully so that air cannot leak from the edge of the mask.
At present, foreign countries, including WHO, have not made clear conclusions on the best wearing time of KN95 masks, and my country has not yet made relevant regulations on the use time of masks.
Some researchers have done related studies on the protection efficiency and wearing time of KN95 medical protective masks. The results show that KN95 masks are worn for 2 days, the filtration efficiency remains above 95%, and the respiratory resistance does not change much; the filtration efficiency is reduced to 94.7 after 3 days. %.
The advice given by the Kn95 Mask Supplier is that if there is no sufficient supply of masks, as long as the equipment is not obviously soiled or damaged (such as creases or tears), it can be considered for reuse. Of course, like ordinary Medical Face Mask, it is better to replace them frequently.