Since the emergence of the Coronavirus, the protective mask has become an essential product to restrict the spread of the epidemic as much as possible. Whether it is approved "FFP2", surgical or simply "homemade", the materials used to make it are the subject of debate and everyone has their own opinion.
In order to put the church back in the middle of the village, researchers from the researchers from the University of Cambridge tested the effectiveness of several everyday objects and materials on two parameters, the level of protection and breathability, in order to identify the one that represents the best everyday defence against bacteria. To do this, they sprayed the Astropheus bacteria (about 1 micron) and the MS virus (0.02 microns) on the materials to be tested and analysed their level of capture. For information, the Coronavirus particles have a size midway between the two particles tested, 0.1 micron.