What Dust Particles Are In Indoor Air?
We hear a lot these days about particles, particles sizes and microns. This can be confusing and there appears to be quite a bit of misinformation out there online. So here we will try to simply What Dust Particles Are In Indoor Air and what it all means. First of all, your indoor air or the air that your breathe in your home, office, car, restaurant, etc. always has dust or particles that are airborne. Even outdoors you will be inhaling particles. A particle is anything that has mass. So its not a gas. Particles are measured usually in microns. 1 micron is 1:1 millionth of a meter. Still confused? A human hair is roughly 50-75 microns in size. have a look at the graphic in this blog. Filters are usually rated in how effective they are in capturing certain particle sizes. HEPA air purifiers or HEPA air filters are rated to capture any particle that is sized 0.3 microns or bigger. A HEPA filter needs to be able to capture 99.97% of particles at this size or bigger to be rated a tr...