Hepa filter have 3 main Function Hepa filter often used by air purifiers can remove up to 99.97% of harmful particles with 0.3 micrometers (µm) in diameter. Hepa Filter is made composed by randomly arranged fibers. Inside of hepa file articles are trapped by 3 following mechanism.

1. Interception , At this process, the particles will follow line of flow in the air stream and come from one radius of a fiber then adhere to it.

2. Impaction , at this process, the large particles are unable to avoid fibers 3. Diffusion , smallest particles under 0.

3 through the filter is slowed and raises the probability to stop small particles at 2 mechanisms above.

History of Hepa filter Hepa filter was first made and designed in the 1940. First it used for Manhattan project purpose.Made commercially at 1950. Because hugely successful for result and highly satisfied from many people for industry it have been evolves to many various industry product such as electronic micro circuitry, nuclear power, nuclear fuels, aerospace, health care, hospitals, pharmaceutical processing. Biomedical HEPA filters are good product to prevent the airborne bacterial, infection, therefore, viral organism. Generally used for medical purpose. From analysis and survey best HEPA units have an efficiency rating up to 99.995%. That means HEPA have very high protection to prevent airborne disease. Now with improvement of modern technology. Hepa filter often combined with almost air purifiers technology. created by manufacturing with affordable prices