What is a Micron?
98% OF ALL INDOOR AIR PARTICLES ARE LESS THAN ONE MICRON IN SIZE
A micron is a metric measurement used to analyze very small particles. One micron is equal to 1/25,400 of an inch or one millionth of a meter. The chart on the right provides a visual representation of the spectrum of common air contaminants and their measured sizes in microns.
Of particular importance when discussing indoor air quality solutions is how effective a product is at capturing/controlling contaminants 2.5 microns or less in size. Any particles less than 2.5 microns are classified as a Respirable Suspended Particle (RSP) and the health hazards with these small particles is great. RSP’s are particles that are small enough to evade mucosal capture by the protective cilia and mucosa of the human upper respiratory system and invade the deeper reaches of the lungs with serious health consequences. In fact, any particles of five microns or less are considered a definite inhalation hazard because of the inability of the human body to filter effectively these particles from the lungs.
Allergenic particles, infectious agents and toxic gases can cause allergic reactions, headaches, sickness and many other illnesses. Since 98% of airborne contaminants are less than one (1) micron in size, knowing the effectiveness of any product at controlling submicron particles is very important when making a decision on an air purification system for your home.
