That sounds complicated. Which is why we talk about something called clean air delivery rate. Depending on the size of the pollutant of concern, a CADR can be calculated, following some standards (ahamverifide.org/ahams-air-fi...) 15/

The CADR tells you the overall impact, taking into account how good the filter's efficiency is in the size range of concern and the flow rate through the filter. 16/