A clinical test of the AiroCide PPT air purifying system was conducted in a tomato ripening room/cooler at a major tomato repacking facility in Riverview, FL to measure the reduction in airborne mold and airborne bacteria. The system reduced the amount of airborne mold in the cooler by an average of 90.5% after a 72-hour period. Airborne bacteria were found to be present at sufficiently low levels to be considered insignificant.