What does HEPA stand for?

What does HEPA stand for?

• A. High Efficiency Particulate Air
• B. Health Emergency Preparedness Aid
• C. Heavy Engineered Particulate Absorbent
• D. High Electron Potential Air

Answer: (A)

HEPA stands for High Efficiency Particulate Air. This describes a filtration standard designed to remove a very high proportion of airborne particles; a true HEPA filter typically traps about 99.97% of particles that are 0.3 micrometers in diameter, a size chosen because it’s the most penetrating for many filters. In practice, this means very effective reduction of dust, pollen, smoke, and many pathogens from the air that passes through the filter. The other phrases listed don’t correspond to a recognized filtration term, so they don’t fit as the expansion of HEPA.

HEPA stands for High Efficiency Particulate Air. This describes a filtration standard designed to remove a very high proportion of airborne particles; a true HEPA filter typically traps about 99.97% of particles that are 0.3 micrometers in diameter, a size chosen because it’s the most penetrating for many filters. In practice, this means very effective reduction of dust, pollen, smoke, and many pathogens from the air that passes through the filter. The other phrases listed don’t correspond to a recognized filtration term, so they don’t fit as the expansion of HEPA.