The study adopted a calculation strategy that was exemplified by an empirical ultra-Stokesian drag factor. The authors also noted that they used a facility for ensuring high levels of particle interceptions. It was concluded that important revisions were done in relation to the impactor theory, which included ultra-Stokesian equations aimed at producing the best results of dragging particles.
In fact, the revisions led to about 5% to 10% shifts in efficiency curves that were associated with inertial impactors. It was also concluded that the tail that was formed as a result of particle interception helped to decipher that it could not be significant enough to account for the variations in the experiment and theory. Finally, the authors concluded that the collection coefficient was shifted to the right by the impact of the ultra-Stokesian drag factor. Although the shift was relatively small, it was typical for impactor systems, but noticeable variations can be observed when higher frequencies are involved in relatively high Reynolds numbers.