Hazardous Airborne Particles
Smaller airborne particles can be hazardous for humans. In many jurisdictions dust fractions at specified particle sizes in working environments are required to be measured.
Airborne particles which can enter the nose and mouth during normal breathing. Particles of 100 microns diameter or less.
Particles that will pass through the nose and throat, reaching the lungs. Particles of 10 microns diameter and less. Referred to as PM10 in the USA.
Particles that will penetrate into the gas exchange region of the lungs. A hazardous particulate size less than 5 microns. Particle sizes of 2.5 micron (PM2.5) are often used in USA.
The total allowable particle concentration - building materials, combustion products, mineral fibers and synthetic fibers (particles less than 10 microns) - specified by EPA (U.S. Environmental Protection Agency)
- 50 microns/m3 (0.000022 grain/ft3) - allowable exposure per day over the course of 1 year
- 150 microns/m3 (0.000022 grain/ft3) - allowable exposure over 24 hours
****If the concentration of airborne particles are regulated in building materials, why aren’t the concentration of bioaerosols regulated in dental offices?! Take your health into your own hands. Use AeroShield Aerosol Eliminator during every procedure to minimize your exposure.****