PM2.5 Activated Carbon Filter
The PM2.5 activated carbon filter utilizes five-layer technology to ensure efficient filtration from harmful airborne substances. It is effective in blocking the greater majority of airborne particulates, even to the finest nanoparticles. The name 'PM2.5' originates from their original use in protection against 'Particulate Matter 2.5', which is the smallest and most harmful form of air pollution.
You can use one PM2.5 filter for up to 72 hours at a time. We recommend replacing your mask filter every week or so, depending on how vigorously it is being used. If you experience more difficulty in breathing or find your filter becoming rather unsanitary, replace it accordingly.