The KN95 mask uses CHINA GB2626-2019. The N95 mask uses the American NIOSH standard 42 CFR Part 84.
N means resistant to oil and can be used to protect non-oily suspended particles; 95 means that the filtration efficiency is greater than or equal to 95% Therefore, both N95 and KN95 indicate that the filtration performance of non-oily particulate matter reaches more than 95%, which can provide better protection in daily life.
KN95 masks and N95 masks are used in non-medical places and are used to prevent various types of aerosol particles suspended in the air, including dust, smoke, mist and pathogenic microorganisms (such as bacteria and viruses).
KN95 masks and N95 masks are equipped with two types of breathing valve and no breathing valve. The mask without the exhalation valve can effectively prevent the contamination of the surrounding environment by the droplet bacteria discharged by the wearer of the mask. this function. So it is best to buy a mask without a breathing valve.
KN95 masks and N95 masks do not have the function of blocking the penetration of body fluids and cannot be used for medical operations, especially high-risk operations such as tracheotomy and tracheal intubation.
KN95 masks and N95 masks may not be suitable for some frail or have cardiopulmonary diseases, and are also not suitable for patients with respiratory problems with dyspnea.
If you purpose is personal protective use,it is safe to buy the KN95 mask for sale from amazon or ebay ecommerce website,the product lable should have the kn95 mask supplier name,standard etc information.