In the selection of the masks, there are several steps the consumers can follow.
Firstly, you can touch masks carefully. Regular 12- layer mask are soft and even, but low-grade masks are mostly with hard plastic gauze or thin face cloth. They feel apparently different.
Secondly, you also have to take a careful look at the packaging. The best choice is to select masks which are packaged in independent small package to avoid secondary pollution ultimately. Generally, the mask size should be 13 cm wide and 16.5 cm long. That can cover your mouth, nose and the most part under your eyes and achieve protective effects after you wear it.
Thirdly, you should go to regular stores, supermarkets and pharmacies to buy masks, and pay attention to the name, the address, and telephone number in order to know whether the manufacturer is regular or not.
Fourthly,you should clean your hands before and after you wear the mask and you should follow the instructions on the package to wear a mask. For example, you should make the mask tie fixed and tight to make the mask close to the face. If you wear a too lose mask, the air will enter from the side gap and cannot achieve the preventive effect.
Fifthly, you should make sure that all your mouth and nose are covered. Covering only the mouth is not correct, because the nose is the main part for the body to breath in and breath out the air. Also both sides of a mask shouldn't take turns to wear, because the outward side is easy to absorb bacteria. If it is not cleaned and you put the outward toward the side to wear, you are easy to infect pathogen.
Always remember that you should wear face masks of more than 12 layers in the high density crowd, not ventilated place or some relatively "high-risk" environment (eg, hospitals, etc.).
People can sweat easily in hot days, and make masks wet. In that way, it can not effectively resist the virus invasion. At this time, you should replace it by a clean mask, and it is better to prepare a few masks for easy replacement and cleaning. If you feel bored as you have wore a mask for a long time or when you want to take off your mask for ventilation, you should go to clean area in which there is no infection or no crowded people .
Don't wear a mask for too long a time, maximumly 6 hours. It will deny the access to fresh air and decrease the resisting ability.
Previous:Does Wearing More Layers of Masks Get Better Protective Effect?
