Hepa Filter Particle Size Chart. Hepa is a type of pleated mechanical air filter. Hepa filters are ideal for very small particles measured in micrometers or microns and are represented by the symbol µm.
To put particle size into perspective a human hair ranges in size from 17 181 microns in diameter most allergy causing pollen is 10 40 microns duct particles can be as small as 2 5 10 microns bacteria are generally in the range of 0 3 5 microns and viruses the smallest particles range in size from 0 004 0 1 microns. Hepa air velocity chart approximate feet per minute 300k 25 40 175 150 30 square inches of face area to determine pressure drop for approximate velocity see page 6 pressure drop efficiency clean room and work station filters a 6 12 18 d 24 36 width of filter number in inches. It is an acronym for high efficiency particulate air filter as officially defined by the u s.
Hepa is a type of pleated mechanical air filter.
Hepa filters are ideal for very small particles measured in micrometers or microns and are represented by the symbol µm. Hepa filters are ideal for very small particles measured in micrometers or microns and are represented by the symbol µm. To put particle size into perspective a human hair ranges in size from 17 181 microns in diameter most allergy causing pollen is 10 40 microns duct particles can be as small as 2 5 10 microns bacteria are generally in the range of 0 3 5 microns and viruses the smallest particles range in size from 0 004 0 1 microns. Hepa air velocity chart approximate feet per minute 300k 25 40 175 150 30 square inches of face area to determine pressure drop for approximate velocity see page 6 pressure drop efficiency clean room and work station filters a 6 12 18 d 24 36 width of filter number in inches.
