Pm2.5 masks which is good
Gauze masks, the market share proportion of 50%, usually can be divided into six layers, twelve layers and eighteen layers. Gauze masks are all white, made of pure cotton cloth, after degreasing and bleaching. The masks are soft, odorless, tasteless, and free of impurities. After each use, they can be washed with soap and disinfected with a disinfectant solution, and then reused.
Medical protective masks, the most professional protective masks in the medical industry, is the most also protective masks for respiratory infectious diseases, widely used in the period of SARS, bird flu virus. Medical protective masks are generally divided into three layers, the inner material is non-woven fabric, the middle layer of high-efficiency electrostatic meltblown layer, the outer layer of ultra-thin polypropylene meltblown layer. This medical protective mask anti-virus bacteria performance effect is remarkable, the mask is mostly maintenance-free, can not be reused.
Disposable medical masks can not prevent pm2.5, this mask can effectively filter dust particles with a diameter of more than 4 microns, and can protect against blood germs. At present, the main domestic manufacturing standard is YY0469-2004 "medical surgical mask technical requirements"; gauze mask even more can not prevent pm2.5, it can only protect the large diameter particles, is the three types of medical masks in the protection of the protection of the worst filtering effect of the protective mask.
pm2.5 mask what brand is good
(1): N95 system (ten times the following, unlimited time) 8210 dust, 8511 with valve, 8515 welding with valve, 8512 welding with valve, 8514 welding with valve, 1860 medical carbon
(2): N100 system (non-oil the same as the above, ten times the exceeding of the standard below the use of the toxic metal aluminum, cadmium, arsenic, and radioactive particles. Arsenic and radioactive particles, pharmaceutical industry, etc., more than 99.7 filtration efficiency,) 8233 with valve.
(3): R95 system (ten times less than, oily environment for 8 hours, non-oily until breathing is blocked,) 8247 organic vapor odor and particles containing carbon, 8246 acidic gases and particles containing carbon.
(4): P95 series (less than ten times, 40 hours in oily, non-oily until obstructed,) 8577 Organic vapor odor and particles with valve carbon, 8576 Acid gases and particles with valve carbon.
(5): 9000 series 9001A/9002A standard, 9003A/9004A small and medium-sized, 9021/9022 durable, 9041A/9042A organic vapor odor particles containing carbon.
(6): FFP1 series particle protection (European standard, 0.3 micron particle size 95 liters / minute environmental testing, more than 80% filtration, for mining casting grinding textile agriculture and other general,) 8200C.
(7): FFP2 series particle protection (European standard, more than 94% filtration efficiency, for very fine industrial dust, suitable for wet and hot and long time wear) 8822 with valve, 9320 can be folded.
(8): FFP3 series high toxicity protection (European standard, more than 99% filtration, used for high toxicity, radioactive particles, welding metal fume, etc., suitable for humid heat and long time wearing,) 9332 with valve.
pm2.5 mask useful
pm2.5 mask mask refers to the ability to filter pm2.5 particles of the mask, pm2.5 mainly refers to the air contains fine particles 2.5 μm or less than 2.5 μm, which indicates that the air pollution at this time is not too serious, and if the value of the air particles is higher than 2.5 μm, then the air pollution is more serious. Although PM2.5 is only a very small component of the earth's atmospheric composition, it has an important impact on air quality and visibility, etc. PM2.5 is a small particle size, rich in a large number of toxic and harmful substances and in the atmosphere of the residence time is long, the transport distance, and thus on human health and the quality of the atmospheric environment is more influential.
The pm2.5 mask can filter airborne viruses, bacteria, haze, and some volatile chemicals. It is especially suitable for use in environments with poor air quality. And green care PM2.5 mask contains antibacterial, dust, put haze, anti pm2.5 function, go out, commute to work with a, the body is still quite good.