Summary A PM2.5 filter is a mask insert that can be inserted into the inner pocket of a cloth mask to increase it’s filtering performance. It gets its name from an established standard based on 2.5 micrometers (microns) – equivalent to 0.0025 mm – a reference to the size of airborne particulate matter that this […]
Should I use a face mask during the COVID-19 pandemic? The use of face masks has received increasing support among public health officials as an additional control measure against the spread of COVID-19. Earlier messaging seemed to indicate that masks are not useful at all in preventing spread on COVID-19. While there is some truth […]