Dust Isn’t Just Dust

Studies show that debris collected from the air filter in a ventilation system contains between 100 and 6,700 bacteria per gram of dust (approx 2,800 – 190,000 bacteria per ounce), from ventilation ducts contains between 50 and 50,000 bacteria per gram (approx 1,400 to 1,400,000 bacteria per ounce), and the floor debris contains similar numbers…