What are HEPA filters ?

Today, HEPA filters are adapted to all fields: food industry, electronics, pharmaceuticals, chemicals... In medicine for surgery rooms. In planes to renovate the air.  Even in the home. In general, anywhere where higher air purity is required. These absolute filters are effective in keeping the air free of dust, pollen, mites, viruses, bacteria, and fine particles measuring less than 0.01 millimeters.

Although the diameter of the fibers is between 0.5 and 2 microns, the randomly arranged meshes retain smaller particles in three ways: particles adhere to the mesh by rubbing against the fiber as the air carrying them passes through; larger particles directly collide with the fibers; and finally, diffusion, related to the random movement of particles in a fluid (Brownian motion) which facilitates their adhesion.