EPA is the abbreviation of High Efficiency Particulate Air Filter.
1) The HEPA filter consists of a stack of continuous, pre-folded, sub-glass fiber membranes that form a wavy gasket for placement and support of the filter boundary.
2) HEPA is an internationally recognized and best high-efficiency filter material. Originally used in nuclear energy research and protection, HEPA is now widely used in places requiring high cleanliness such as precision laboratories, pharmaceutical production, atomic research and surgery.
3) HEPA is made up of very fine organic fibers. It has strong ability to capture particles, has small pore size, large adsorption capacity, high purification efficiency, and water absorption. The particle purification rate for 0.3 micron is 99.97%. That is to say, only 3 of every 10,000 particles can penetrate the HEPA filter membrane. Therefore, its effect of filtering particles is very obvious! If it is used to filter cigarettes, the effect of filtration can be almost 100%, because the size of the particles in the cigarette is between 0.5 and 2 microns, and the membrane cannot pass through the HEPA filter.
4) The main function is to filter the particles in the air.
EPA是High Efficiency Particulate Air Filter （高效率空氣微粒濾芯）的縮寫，