Wearing a mask is a necessary measure to prevent diseases. What kind of mask you wear is also critical. There are many types of masks on the market, and different masks have different effects.
Which is better, n95 or m95 masks?
The main differences between the two types of masks are the filter material of the mask, the standards for testing the filtration efficiency of the mask, and the structural design of the mask.
M95 masks still use Green Shield’s two core technologies: Kanglun antibacterial technology and Green Shield microfiltration technology, but the product design is more innovative.
The Green Shield M95 mask undoubtedly has many highlights: antibacterial fabrics and microfiltration technology, which address both aspects: the surface layer of the Green Shield M95 mask uses the Kanglun antibacterial non-woven fabric with multiple domestic patented technologies. Effectively inhibits the growth of bacteria on the surface of the mask and prevents the threat of secondary pollution; in terms of microfiltration technology, it can effectively filter PM2.5 air particles, with an effect of >95%. Advanced medical masks have excellent barrier properties against particles and fluids, ensuring Breathable for use in precision work environments. 3M protective masks mainly prevent particulate matter. Protective masks cover a person's mouth, nose and chin to form a space sealed with the face, and rely on the person's inhalation to force the polluted air to pass through the filter. The mask body is usually made of anti-particulate filter material and is fixed by a headband or ear straps. The seal on the face and nose is usually shaped with the help of a metal nose clip, but it is also achieved by other methods, and some are still in the nose clip inside the mask. Add gasket. Since the mask has no replaceable parts, it needs to be discarded as a whole after it expires. It is also called a disposable mask or a maintenance-free mask.
Can n95 masks prevent bacteria and viruses?
N95 masks are one of the nine types of anti-particle masks certified by NIOSH (National Institute of Occupational Safety and Health). "N" means that it is not suitable for oily particles (the oil smoke produced by cooking is oily particles, but the droplets produced by people talking or coughing are not oily); "95" means that under the testing conditions specified by NIOSH standards, the filter The efficiency reaches 95. N95 is not a specific product name. As long as the product meets the N95 standard and passes NIOSH review, it can be called an "N95 mask."
Which one is better, n95 mask or PM2.5 mask?
PM2.5 mask refers to a mask that can effectively filter PM2.5 particles. The airtightness of the mask determines the filtering of suspended particle molecules. ability. It can effectively filter invisible killers in the air - smog, viruses, bacteria, dust mites, pollen and other tiny particles. Suitable for environments with poor air quality. The basic structure of PM2.5 masks is an outer layer of antibacterial fabric, made of carbon fiber felt pads, polymer fabrics, non-woven fabrics, etc. The middle layer is a warm filling, and the bottom layer is a PM2.5 filter. Dust-free granular activated carbon is added in the middle of the filter. The filter has been treated with nano-silver fungicide, and its filterability is around 95 to 99. The main materials of PM2.5 masks are non-woven fabrics, filter paper, etc., and the most important thing is lead carbon cloth, which can have better anti-virus functions. PM2.5 masks are generally disposable masks, so try not to use them twice or more. N95 dust masks are one of the nine standards developed by NIOSH in 1995. "N" means "not resistant to oil". "95" means that when exposed to a specified number of special test particles, the particle concentration inside the mask is 95% lower than the particle concentration outside the mask. Among them, the value of 95 is not the average value, but the minimum value, so the average value of actual products is mostly set above 99. Therefore, N95 dust masks are tested with 0.3 micron sodium chloride particles. The barrier rate must be above 95. When tested for tightness on the wearer's face, it is ensured that air can pass in and out of the mask when it is tightly attached to the edge of the face. . Only those that meet this test will be issued an N95 certification number. As for whether n95 masks or pm2.5 masks are better, I think both are fine.
Is it necessary to wear an N95 mask?
There is no significant difference in the effectiveness of N95 protective masks and medical surgical masks in preventing infectious acute respiratory infections in clinical settings. In other words, for the purpose of self-protection and reducing the risk of respiratory infection, you can wear the latter two types of masks (medical surgical masks and anti-smog masks). The stronger the filtering ability, the greater the impact on breathing. Many people will find it harder to breathe after wearing N95 masks. This means that the outside ones can't get in, and the inside ones can't get out... So, although N95 masks are good, they are not recommended for pregnant women, the elderly, children or people with respiratory diseases, and healthy adults should not wear them for a long time. . According to the Changjiang Daily, Liang Jiansheng, director of the Disinfection and Vector Biological Control Institute of the Wuhan Center for Disease Control and Prevention, said that if citizens go to public places and do not have contact with patients, wearing a medical surgical mask is enough and there is no need to over-protect. , but if you will come into contact with patients, you must wear a bioproof N95 mask.