The effectiveness of individual commercially available portable indoor air cleaning units were tested for their removal of dust particulates, tobacco smoke particulates and vapour phase constituents, viable and total fungal spores, pollen, and gaseous contaminants, and formaldehyde. A clean air test chamber was used. The results presented represent initial use. It was found that HEPA and electrostatic precipitator system demonstrated the highest efficiency in relation to particulate contaminants, with electret filter systems close behind. Least effective were ionizers and ozone generators.
Login