The Science And Tech Of Face Masks

kn95 masks

It's best to take the respirator mask out of its packaging, taking care to only touch the outside of it. - These masks also include number classifications, such as P100 and R 95. The numbers stand for the percentage of particles they filter out. Prof. Naoum Issa, head of epilepsy analysis at the University of Chicago Medicine, put Eng in touch with Jon Brickman, the hospital’s