* Particles as small as 0.3 microns from the air that passes through the filter.
Tested with Staphylococcus albus and Influenza A (H1N1).
* Tested with Staphylococcus albus and Influenza A (H1N1). Does not reduce or absorb carbon monoxide gas. Keep gas appliances well ventilated.
** From air that passes through the filter.