Large particles such as dust and pollen are captured in the first layer
consisting of larger fibers. In this stage particles are electrically charged and trapped by direct contact with the filter fibers.
Second Layer: This layer consists
of a finer fibers that collect smaller particles such as
bacteria and allergens. This layer of the filter intercepts the smaller particles that escaped the first
Third Layer: In this layer, much smaller
particles like viruses, mold, pet dander and minute particles are
filtered out. This layer consists of ultra-fine fibers, as small as 0.5
micron. Minute Particles enter this layer with an imparted negative charge and
easily adhere stick to the fibers, thus capturing particles as small as
0.1 micron at 99.97% efficiency.