Matters needing attention:
Duration of use:
From the point of view of human physiology, blood circulation in the nasal mucosa is very strong, and the channels in the nasal cavity are very tortuous. When air is inhaled into the nostrils, the airflow forms a vortex in the tortuous channel, which heats the airflow into the nasal cavity. Some tests have shown that when cold air at minus 7 ° C is drawn into the lungs through the nasal cavity, the airflow has been heated to 28.8 ° C, which is very close to the temperature of the human body. If you wear a mask for a long time, the nasal mucosa will become fragile and lose the original physiological function of the nasal cavity, so you cannot wear a mask for a long time. Masks can only be worn in special environments, such as places with many people and no air circulation. Of course, it is necessary to wear a mask to walk in the wild to resist the wind and sand, or to move in an environment with air pollution, but the time should not be too long. In addition, in the flu season, go to public places where a large number of pathogens may exist, you should also wear a mask. Wearing a mask is only one of the ways to prevent respiratory infectious diseases. The most important thing is to maintain good living habits.
Cleaning and maintenance:
The outer layer of the mask often accumulates a lot of dust, bacteria and other dirt in the outside air, and the inner layer blocks the exhaled bacteria and saliva. Therefore, the two sides cannot be used interchangeably, otherwise the dirt contaminated by the outer layer will be directly attached When inhaled into the face, it becomes a source of infection. When the mask is not worn, it should be folded and placed in a clean envelope, and the side close to the nose and nose should be folded inwards, and it should never be stuffed into the pocket or hung around the neck.
If the mask is wetted by exhaled heat or saliva, its effect of blocking germs will be greatly reduced. Therefore, it is best to prepare a few more masks for replacement. You should change and wash it once a day. When washing, it should be scalded with boiling water for 5 minutes.
Masks should be cleaned and disinfected every day. Both gauze masks and air filter masks can be disinfected by heating.
The specific approach is:
1.Cleaning. First, gently rub the gauze mask with warm water and soap. The bowl-shaped mask can be gently brushed with a soft brush dipped in detergent, and then washed with water. Please be careful not to rub hard, because if the warp and weft gap of the gauze is too large, it will lose the effect of preventing droplets.
2.Disinfect. Put the cleaned mask in a 2% peracetic acid solution for 30 minutes or boil in boiling water for 20 minutes or steam in a steamer for 15 minutes, and then dry it for use. This method is suitable for gauze masks and bowl-shaped masks.
3.Check. Before using it again, you should carefully check whether the mask and mask are still intact. For gauze masks and masks, you can take a light transmission inspection method, that is, take a look in front of the lamp to see if there are obvious light spots. Is the rate consistent? If in doubt, replace it with a new one. In any case, masks and masks are generally updated after 3 to 7 times of cleaning, and masks of particularly good quality can be cleaned 10 times. Activated carbon adsorption masks should pay attention to regularly replace the activated carbon interlayer. If the activated carbon interlayer is not replaceable, it will be replaced after 7 to 14 days. This mask cannot be cleaned and then reused.