Researchers build up a basic way to deal with outwardly assess veil adequacy Kumar Jeetendra | August 9, 2020 Using inexpensive and widely available resources, scientists have developed a simple approach to visually evaluate how effectively different kinds of masks to prevent the spread of droplets that could contain SARS-CoV-2 virus particles, according to a new study. While the authors note their job remains in the early stages, and their method has so far …