Hepa Filter - Inertia Filter

HEPA stands for high-efficiency particulate air. HEPA filters provide a very high level of filtration for the smallest, as well as the largest, particulate contaminants. They send air through various pre-filters to assist with catching airborne particulate, capturing 99.997% of particles at 0.3 microns. Even when particles are smaller than this, they get captured by diffusion, meaning HEPA filters are extremely effective at capturing nanoparticles.