Medical surgical masks have been used for more than 100 years in preventing the spread of respiratory infectious diseases and preventing surgical infections. Although a variety or masks for various purposes have been developed and produced, and many countries have developed relevant standards, until now masks have only been promoted and used in related industries, and few people really understand the relevant performance of various masks. The new coronavirus epidemic this year has brought masks to the forefront again. How to wear the mask to achieve the required protective effect, for this reason, we will collect and collate relevant information for a brief analysis, in order to learn.

According to the filter media of protective masks, there are two main categories, namely dust-proof and anti-toxic. Their role is to harmful aerosols, including dust, smoke, fog droplets, poisonous gas and toxic vapors, etc. by the filter media adsorption, blocking and not inhaled by people.

And various barrier supplies used to protect medical personnel from exposure to infectious agents a have. The specific concepts of various masks are as follows.

A. Gauze mask

Protect the respiratory tract from harmful dust, aerosols, microorganisms and dust protection supplies.

Second, medical surgical masks

Can stop the spread of blood, body fluids and splashes, medical personnel in the invasive operation process to wear the mask.

Three, medical protective masks

Can stop the airborne infection factor <5um in diameter or near <1m contact with droplet-borne disease and infection masks