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Do you really know medical masks?


Masks are currently considered to be one of the effective tools to prevent the spread of influenza virus. However, the correct selection and wearing of the mask will directly affect the protective effect. So what types of masks are there? In fact, it is divided into three types: ordinary medical masks, medical surgical masks and medical protective masks.

1. Ordinary medical masks

1) In line with YY/T-0969-2013 standard.

2) Generally, there is a lack of filtration efficiency requirements for particulate matter and bacteria, or the filtration efficiency requirements for particulate matter and bacteria are lower than surgical masks and medical protective masks.

3)Scope of application: It is suitable for wearing in a general medical environment, and can block the exhalation of mouth and nose or spray pollutants.

Medical Masks

2. Surgical medical masks

1). It complies with the YY0469-2011 standard, and has very clear regulations on important technical indicators such as filtration rate, bacterial filtration efficiency, and respiratory resistance.

2). Under specified conditions, the filtration efficiency of Staphylococcus aureus aerosol with an average particle diameter of (3±0.3) μm is not less than 95%.

3). Scope of application: Provide a logistics barrier to prevent the direct transmission of pathogenic microorganisms, body fluids, particles, etc., and apply to clinical medical staff to prevent the spread of blood, body fluids and splashes during invasive operations.

3. Protective medical mask

1). According to the GB19083-2003 standard, important technical indicators include non-oil particle filtration efficiency and air flow resistance.

2) Scope of application: It is suitable for filtering particles in the air, and can effectively block secretions such as droplets, blood, and body fluids. About the "N95" mask

N95 mask is one of the nine anti-particulate masks certified by NIOSH. "N" means it is not suitable for oily particulates (the cooking fume is oily particulates, but the droplets produced when people talk or cough do not contain oil); "95" means that the filtration efficiency reaches 95% under the test conditions specified by the NIOSH standard . N95 is not a specific product name. As long as it meets the N95 standard and passes the NIOSH review, the product can be called "N95 mask".