N95 mask for the U.S. NIOSH certification, non-oil particulate matter filtration efficiency of 95%. KN95 masks are in line with the 626 mandatory standards _ particulate matter filtration efficiency ≥ 95%. Generally made of non-woven materials, including the filter layer, mask strap and nose clip. Standard medical surgical masks are divided into 3 layers, the outer layer has a water-blocking effect, which prevents droplets from entering the inside of the mask.
Medical masks of the N95 standard, refers to the U.S. National Institute for Occupational Safety and Health certification, nine kinds of particulate matter protection masks, not a specific product name, as long as it meets the N95 standard, can be called N95 mask. In general, for the aerodynamic diameter, that is, the physical diameter of the particles in the 0.24 plus or minus 0.6 micron filtration efficiency can reach more than 95%.
N95 masks can effectively filter non-oil particles in the air, containing viral droplets have a very good filtration, so for the prevention of new coronavirus droplet infection, has a very good effect, but continuous wear time is generally not recommended more than 6 hours.
During the epidemic masks were categorized by standard as follows:
N95 level protective masks:
1, blocking at least 95% of very fine particles.
2, the implementation of the standard: GB 19083-2010.
3, good closure.
4, applied to medical protection environment.
Medical surgical mask:
1, blocking at least 30% particles, filtering about 5 micron particles, wearing 4 hours to replace.
2, the implementation of standards: YY0469-2011.
3, applicable to invasive operations and other processes worn during the protective environment.
4, general closure, the outer layer is a water-blocking layer.
Ordinary disposable medical masks:
1, lack of filtering efficiency requirements for particulate bacteria, wear 4 hours replacement.
2, the implementation of the standard: YY/T 0969-2013.
3, closed general.
4, general medical environment, blocking the general oral and nasal exhaled or sprayed secretions.
Legal basis
"Chinese People's Republic of China*** and the State Law on Prevention and Control of Infectious Diseases"
Article XII In the Chinese People's Republic of China*** and the State field of all units and individuals must accept disease prevention and control agencies, medical institutions related to infectious diseases such as investigations, testing, collection of samples, isolation and treatment and other preventive, control measures, and to provide truthful information thereon. Disease prevention and control institutions, medical institutions shall not disclose relevant information and data involving personal privacy.
The administrative department of health and other relevant departments, disease prevention and control institutions and medical institutions due to the illegal implementation of administrative management or preventive and control measures, infringing on the legitimate rights and interests of the units and individuals, the relevant units and individuals can apply for administrative reconsideration or litigation in accordance with the law.
Article 16 The state and society shall care for and help patients with infectious diseases, carriers of pathogens and patients suspected of having infectious diseases, so that they can receive timely treatment. No unit or individual shall discriminate against patients with infectious diseases, carriers of pathogens and patients suspected of having infectious diseases.
Patients with infectious diseases, carriers of pathogens and patients with suspected infectious diseases shall not be engaged in work that is liable to spread the infectious disease, which is prohibited by laws, administrative regulations and the provisions of the State Council's administrative department of health, until they have been cured or excluded from suspicion of the infectious disease.