The Shaw Institute, a nonprofit research organization whose mission is to discover and expose environment threats to people, wildlife, and the environment, tested the effectiveness of CLEANR’s Washing Machine Filter by running a mix of tap water and plastic flock fibers (10 microns in diameter and 300 microns in length) through the filter at various concentration levels to simulate real world laundry conditions. The test was repeated three times and resulted in 90%, 97%, and 98% microplastic fiber removal rates.