M. Moritz et al., INVESTIGATIONS ON THE SURVIVAL-TIME OF OUTDOOR MICROORGANISMS ON AIR FILTERS, Zentralblatt fur Hygiene und Umweltmedizin, 201(2), 1998, pp. 125-133
Outdoor microorganism survival on air filters was examined in 16-day f
ield investigations. Using a mobile filter testing device, samples of
fiberglass pocket filters (filter class F7) were ventilated with outdo
or air, and their microorganism contents were determined at 1, 2, 4, 8
and 16-day intervals. The results showed a mean survival time of micr
oorganisms deposited on the air filters of 1 to 3 days.