A new study conducted by the University of São Paulo (USP) has identified which types of masks are most effective in protecting against the new coronavirus.According to the results, the TNT models have a higher safety than the cotton ones.The latter, according to research, would have an average effectiveness of 40%.TNT, with polypropylene material, had a variation between 80% and 90% of the effectiveness of its operation.The masks that most proved to be safe against contamination were surgical and PFF2 and N95.These models were able to filter something around 90% to 98% of the particles.On the other hand, the fabric ones, which not only include cotton, but also microfiber, lycra and other synthetic materials, showed a variable efficiency from 15% to 70%.However, there are fabrics based on polyester and cotton, with silver ions, which can inactivate viruses, bacteria and fungi, as already discovered by the USP itself in previous surveys.The masks underwent tests in equipment that generates aerosol particles with a controlled size, in order to resemble the dimensions of SARS-CoV-2.The team of researchers sprayed this jet on the PPE, to see what the concentration of particles in the masks was.You can check the latest news about the new coronavirus on our special page dedicated to the subject.Access is available through this link.What mask material do you usually use?Interact with us in the space below.The cotton one only protects the psychological from lunatic pandeminions...Put one with 2 layers with uvc leds in the middle, of course the uvc can't come out through the "middle", a rechargeable battery LIR2032 increases a led about 2 weeks around..only use it once and throw it away to spend more money, the industry bought this researchOrders without CPF or CNPJ number will be refused from September, Correios warnsFastest Mobile!TudoCelular Ranking with graphs of all performance testsMobile with the best battery!TudoCelular Ranking with all autonomy testsASUS launches new gaming phone ROG Phone 5s and 5s Pro in Brazil;check the prices