Testing Air Quality Monitors (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Berkeley Lab researchers Brett Singer and Woody Delp fry green beans to generate particles for testing air quality monitors. Credit Roy Kaltschmidt/ Berkeley Lab Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.