N95 belongs to the second class of medical devices, individuals do not have the subjective qualification of operating medical devices, engaged in the operation of medical devices in violation of the prohibition of the national administrative departments, so n95 masks allow individuals to sell.
In the use of n95 masks must master the correct way to wear, first the folds of the mask open, the mask over the mouth and nose, hanging in the ears, while the mask to cover the chin, the bridge of the nose part of the pressure, to avoid more air into the nasal cavity, can not speak of the nose exposed in the mask outside.
General masks are recommended to change the mask every 2 to 4 hours, while there is no fixed replacement time for N95 masks. With the current lack of resources, it can be reused on a limited basis when it is not broken or infected, but it is not recommended that it be changed immediately if it is in close contact with an infected person or if it is sprayed with body fluids or blood to the point that the mask becomes wet, stained with body fluids, obstructed by respiration, or torn.
The N95 mask is one of nine particulate matter dust masks certified by the U.S. National Institute of Occupational** Health. "N" means not suitable for oily particles; "95" refers to the filtration efficiency of 95%. 99% filtration efficiency of N99 masks, ** recommended to wear N95 masks two days to replace.
Different environmental particulate matter concentration is different, the nature of particulate matter is different, each person's use of time is different, a variety of anti-particulate masks have different dust capacity, as well as the use of different methods of storage, all of these will affect the service life of the mask, so there is no way to uniformly specify the specific time of replacement. When any part of the anti-particulate mask is found to be broken, as well as the obvious feeling of increased breathing resistance, the entire mask should be discarded.
Legal basis:
The Criminal Law of the People's Republic of China
Article 225 Violation of state regulations, one of the following illegal business practices, disrupting the market order, and the circumstances are serious, shall be sentenced to not more than five years' fixed-term imprisonment or detention, and be imposed, or be imposed solely, with a fine not less than double the amount of the illegal income and not more than five times the amount of the fine. The circumstances are particularly serious, shall be sentenced to not less than five years of fixed-term imprisonment, and shall be sentenced to not less than double the illegal income of not less than five times the fine or confiscation of property:
1, unauthorized operation of the laws, administrative regulations, or other restrictions on the sale of monopoly, monopoly goods, or other restricted trade in goods.
2. Buying and selling import and export licenses, certificates of origin for import and export, and other business licenses or approval documents prescribed by laws and administrative regulations.
3. Illegal operation of securities, futures, insurance business without the approval of the relevant state authorities, or illegally engaging in funds payment and settlement business.
4, other illegal business practices that seriously disrupt the market order.