Masks are an essential tool in the fight against COVID-19, and some masks come with integrated pockets for filters. It has been proven that wearing a cloth mask made of two layers of heavy cotton, with a thicker and tighter fabric, can help prevent the spread of respiratory droplets. But what about additional filters?Data on the use of additional filters is limited, but nonwoven masks have been found to have high levels of average filtration efficiency. PM stands for particulate matter, and PM 2.5 filters are designed to filter out fine particles that are 2.5 microns in diameter.
Masked For Work offers masks with a flexible nosewire and adjustable elastic ear straps for a proper fit, so that the layers can do their job and help prevent the spread of airborne diseases.Parents looking for respirator options for their children can check out the work of Aaron Collins, also known as Mask Nerd, a mechanical engineer with experience in aerosol science. The results of his study can be useful in choosing the right masks, including those that meet filter performance requirements.