The virus is rampant. A single droplet can cause the virus to spread faster and infect more people. At this time, please put away your blind self-confidence and appeal to wear a mask
Do not discard the used mask at will. When discarding, please put the mask into a separate pocket or use boiled water to disinfect before discarding. Do not let the mask protecting our health become a virus carrier
Coronavirus spreads from person to person, usually when someone comes into contact with the secretion of an infected person. The infectivity of the virus directly affects the route of transmission. Contact with body fluids splashed by an infected person coughing or sneezing, or shaking hands with an infected person may cause infection. If your hand touches something that the infected person has touched, and then touches your own mouth, nose or eyes, you may also infect the virus.
Under normal circumstances, there is 1 liter of liquid in people's lungs. Every time you sneeze, the lungs will spray these liquids like a squeezed mineral water bottle. When in vitro, they will be divided into more than 40000 small droplets, each containing a large number of viruses and bacteria. Due to the influence of the huge thrust in the body, the velocity of these liquids can be as high as 35 m / s and the propagation distance can reach 3 ~ 8 M.
N95 respirator actually belongs to a respirator. Respirator is a kind of respiratory protective equipment. Compared with ordinary respirators, it fits the face more closely and can filter particles in the air very effectively. Where, n represents not resistant to oil, which can be used to protect non oily suspended particles; 95 means that the filtration efficiency is greater than or equal to 95%, indicating that after careful testing, this respirator can block at least 95% of very small (0.3 micron level) test particles.
In terms of design, if it is ranked according to the priority of the wearer's own protection ability (from high to low): N95 mask > surgical mask > ordinary medical mask > ordinary cotton mask.You can choose the masks you need according to different occasions.