The results are in: U.S. Environmental Protection Agency research testing of do-it-yourself ‘Corsi-Rosenthal Box’ indoor air filters shows they are 99% effective in removing airborne virus. The 'Owl Force One' device tested by the EPA was built by UConn Indoor Air Quality Initiative researchers with Middletown, Connecticut public school children.

The EPA tested a Corsi-Rosenthal Box built by students from Connecticut, and the results are remarkable. In 30 minutes of running a Corsi-Rosenthal Box, 97% of aerosols are removed from the air. In collaboration with the University of Connecticut, plans were written and students learned important STEM lessons during the process. These plans are available on our website and at the University of Connecticut. Results of the EPA tests are available here and here.