Part 6- breaking down transmission through filter materials.
This is a little out of order from part 3, but it all works together. This is the lodging of the moisture particle. If the mask is relatively fresh & dry, and the particle is close enough to the mask where as you do not get sufficient acceleration or force to get it through, it will just chill on the surface. Since there is plenty of unobstructed ports of entry, there wont be enough pressure to push it through, yet. As you breath 1, 2, or more hours in the mask, it will acculimalte more moisture clogged filter medium.