Filters with AQF^® media are designed for real-life situations.  The only representative way a filter's  performance can be evaluated for such conditions is by placing the media or filters into a fluid stream at velocities similar to normal exposure.   Specific gases are then carefully introduced and their concentrations are measured upstream and downstream over time to yield the efficiency and capacity of the filter in a dynamic environment.

Many filtration applications require the filter media to be efficient at removing both gases and particulates in confined spaces.  To assess the particulate efficiency of AQF^® combination media, particulate testing equipment has been installed in our Charlotte Laboratories.  This equipment has the capability to evaluate a variety of filter materials and constructions for fractional efficiency, pressure drop, and dust holding capacity over a wide range of flow rates.