What is the classification standard of masks ?

1、 According to the users, masks can be divided into three categories: industrial, medical and civil

Now masks on the market are divided into three categories: industrial, medical and civil. It is understood that most of the industrial masks on the market are based on the original American specifications such as N95 and N90, or FFP as the original European specification. The national specification for masks in China is gb2626-2006, which is applicable to industrial masks. Similar to the American Standard, it can be divided into kn for non oily particulate matter filtration and KP for oily particulate matter protection. Meanwhile, the filtration rate of Kn90 is required to be greater than or equal to 90%, the filtration rate of kn95 is required to be greater than or equal to 95%, and the filtration rate of kn100 is required to be greater than or equal to 99.97%.

2、 According to the air pollution situation, it is divided into four levels
In the new standard to be implemented, for the first time, the protection level of masks will be divided into four levels: A, B, C and d according to the air pollution status. Class a masks are suitable for use when the concentration of PM2.5 reaches or exceeds 500 μ g / m3, which means severe pollution; Class B mask is suitable for severe pollution (PM2.5 concentration ≤ 350 μ g / m3) and below; Grade C is suitable for severe pollution (PM2.5 concentration ≤ 250 μ g / m3) and below; Grade D is suitable for moderate pollution (PM2.5 concentration ≤ 150 μ g / m3) and below. At the same time, the corresponding protective effects at all levels should be no less than 90%, 85%, 75% and 65% respectively.
Mask specification introduction and application scope:
1. GB technical requirements for medical protective masks
Applicable environment: medical working environment
Support, block and filter particles, and isolate liquids, blood, secretions and droplets.
2. YY medical surgical mask
Applicable environment: clinical invasive operation occasions, such as disinfection, surgery and other occasions.

Support, block and filter particles, isolate body fluids, pathogens and microorganisms.

3. YY / T disposable Medical Mask
Applicable environment: general medical environment
Support to block bacteria, oral pollutants, nasal exhaled pollutants.
It can not be used as medical protective mask and medical surgical mask.
4. GB / T respiratory protective equipment - self priming filter type anti particulate respirator
It can support particle protection.
It does not support escape, fire fighting, steam, harmful gas, anoxic environment and underwater operation.
5. GB / T technical specification for daily protective masks
Support daily life, particulate matter protection.
It does not support escape, fire fighting, medical treatment, hypoxia environment, underwater operation, industrial dust prevention, infant / child use.