What is a PM 2.5 Filter?
A PM2.5 filter is a disposable insert that improves a mask’s filtration effectiveness, especially against the smallest aerosolized particles. A certified pm2.5 filter is used with a fitted cloth mask that can block the vast majority of airborne particulates, including fine aerosols. When evaluating breathability, reusable solutions for everyday use, a pm2.5 filter + mask is one of the most protective options available.
How does a PM 2.5 Filter Work?
A PM2.5 filter works by creating an electrostatic barrier that captures the microscopic particles that common mask fabrics like cotton and polyester can’t effectively block on their own. The melt-blown material in the pm2.5 filter provides superior sub-micron filtration compared to typical cloth masks, but with less inhalation resistance than most medical-grade respirators like the n95.