Mobile Media Tester

The Mobile Media Tester takes particle count and
efficiency measurements in order to analyze
and compare fine fiber vs. coarse charged fiber
bag filter products.

Coarse fiber (synthetic) media is cheaper than fine
fiber (microfiber glass) media. In some cases the
cost differential may be as high as 20%, sometimes
passed on in more competitive pricing to the user.
But should cost be ‘the factor’ when the #1 priority
of most users is indoor air quality? Shouldn't the
prime consideration be the life cycle cost of the
product, with an emphasis on achieving the best
possible air quality at reasonable cost?

The chart below shows the results of media
evaluation using a Mobile Media Tester.

Included in this analysis is a discharging step that
simulates loading of media during normal HVAC
service. This discharging step is already in place in
European filter testing standards and was recently
adapted as an option to current ASHRAE filter
testing Standards.

Note that the fine fiber media products (shades of green)
have an efficiency of around 70% in three different
product configurations. Note the coarse fiber medias
charged (initial) efficiency (shades of orange) and the
same media in a discharged state (shades of blue).