Yes. The mask is valid for two years.
When purchasing a mask, in addition to carefully checking whether the surface of the mask is clean and even, whether there is damage and stains, and whether the size is appropriate, you should also check the product specifications, manufacturers, standard numbers implemented, product approval number, etc. It is the production date and expiration date, the general mask is valid for two years.
Because the mask directly contacts the face and mouth, its breathability, skin flexibility, stretchability, and durability are the main factors that determine the length of use of the mask. Among them, breathability is directly related to the cleanliness of the mask. Only if the mask is clean, the mask can play its protective role, and it will not become a breeding ground for germs.
1. In order to better play the protective role of the mask, try to tighten the elastic band of the mask as much as possible when wearing the mask, and press the aluminum sheets on both sides of the nose to reduce the leakage around, and it is best to breathe slowly.
2. The wearing time should be appropriate. Medical non-woven masks can be continuously used for 6-8h. In the following cases, e799bee5baa6e79fa5e98193e78988e69d8331333433616333 should be replaced in time: difficulty breathing, the mask is damaged or damaged, the mask and the face cannot be closed, and the mask is contaminated (such as when stained with foreign objects such as blood or droplets ), Has been used in isolation wards or in contact with patients, and has an odor.
3. Never squeeze the mask with your hands after wearing it. All kinds of masks, including N95 masks, can only isolate the virus on the surface of the mask. If you squeeze the mask with your hand, the virus will wet the mask with the droplets, and there is still a chance of infection.
4. Do not discard discarded masks at will, otherwise it will cause secondary pollution. Masks used in the general environment should be put in the trash bin, and masks used in the polluted environment should be treated harmlessly as hazardous waste.