“N95 respirators made by different companies were found to have different filtration efficiencies for the most penetrating particle size (0.1 to 0.3 micron), but all were at least 95% efficient at that size. Above the most penetrating particle size the filtration efficiency increases with size; it reaches approximately 99.5% or higher at about 0.75 micron. Tests with bacteria of size and shape similar to Mycobacterium tuberculosis also showed filtration efficiencies of 99.5% or higher.”
From your link. The 3 micron figure makes no sense,the 0.3 figure makes sense.
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0.3(N95 Mask) vs. 0.08(The current Ebola nano particle size)