China Antivirus KN95 Protective Masks

KN95 is a standard Chinese mask

KN95 mask is a kind of mask with particle filtration efficiency in China

KN95 masks and N95 masks are actually the same in terms of particle filtration efficiency

KN95 is Chinese standard and N95 is the American standard

(1) standard source

This standard is a mandatory national standard of China, proposed by the state administration of work safety, and centralized by the national technical committee for standardization of individual protective equipment (SAC/TC 112).

(2) technical content

From the scope of application, this standard is applicable to the common self-absorption and filtration respiratory protective equipment to protect all kinds of particles, such as masks, while other special environments (such as anoxic environment, underwater operation, etc.are not applicable

From the definition of particulate matter, this standard defines various forms of particulate matter, including dust, smoke, fog and microorganisms, but does not define the size of particulate matter.

From the level of filter element, it can be divided into filtering class KN of non-oil particulate matter and filtering class KP of oil and non-oil particulate matter, and it is marked accordingly, which is similar to the N and R/P stipulated in the interpretation guidelines of CFR 42-84-1995.

In terms of filtration efficiency, this standard is similar to the N series masks specified in the CFR 42-84-1995 interpretation guidelines:

Category and level of filter elements

The particulate matter was detected with sodium chloride

Oil particulate matter detection

KN9090.0% or higher

KN9595.0% or higher

KN100 99.97% or higher

KP9090.0% or higher

KP95 95.0% or higher

KP100 99.97% or higher

In addition, GB 2626-2006 also has general requirements, appearance inspection, leakage, respiratory resistance, breathing valve, dead chamber, field of view, headband, connection and connection parts, lens, air tightness, flammability, cleaning and disinfection, manufacturer shall provide information, packaging and other technical requirements.