Product
KN95 Face Mask
Customized Medical KN95 Face Mask
Some researchers have done related research on the protective efficiency and wearing time of N95 medical protective masks.In fact, regarding the frequency of replacement, at present, there is no clear conclusion on the optimal wearing time of N95 masks by foreign countries including WHO, and there is no relevant regulation on the use time of masks in China. Some researchers have done related research on the protective efficiency and wearing time of N95 medical protective masks. The results show that the N95 masks have been maintained for more than 95% of the filtration efficiency for 2 days, and the respiratory resistance has not changed much; the filtration efficiency has been reduced to 94.7% for 3 days.
However, the mask should be replaced in time when:
1. When the respiratory impedance is significantly increased;
2. When the mask is damaged or damaged;
3. When the mask cannot be tightly attached to the face;
4. The mask is contaminated (such as when stained with foreign matter such as blood stains or droplets);
5. Has been used in individual wards or patients (because the mask has been contaminated);
6. If it is a mask containing activated carbon, if there is an odor in the mask.
In addition, there are several points to note when wearing a mask:
1. Wash your hands before wearing a mask, or avoid touching your face with the inside of the mask during wearing the mask to reduce the possibility of the mask being contaminated.
2. Make a clear distinction between the inside and outside of the mask, the top and bottom, the light-colored surface is inside, should be close to the mouth and nose, and the dark-colored side is facing outward; the end of the metal strip is above the mask.
3. Never squeeze the masks by hand, including N95 masks, you can only isolate the virus on the surface of the mask. If you squeeze the masks with your hands, the virus will wet the mask with the droplets, there is still a chance to infect the virus.
4. Make sure that the mask is in good contact with the face. The simple test method is: after putting on the mask, exhale hard, and air cannot leak out from the edge of the mask.
