Portable Clean Room Fogger for Fume Hoods and Airflow Hoods. Find the highest quality CRF2 clean room fogger machine & portable fogger from Applied Physics, Inc. Request a quote for our cleanroom fogger machines used in sterile rooms for smoke studies of airflow turbulence. The portable cleanroom fogger is used in smoke studies with DI Water or WFI water to generate about 0.26 cubic meters of fog per minute. Fog density is about 57 milli-liters consumption per minute. The CRF2 is a low cost fogger that operates for a typical 50 minutes per water fill cycle. The CRF2 fogger produces a constant fog density, thus the fog volume produced is also constant. The fog vapor is composed of water droplets that are about 8-10 microns in diameter; thus as the fog vapor travels thru the airflow, it begins to evaporate. The visual fog evaporates after about 7-8 feet. No particle contaminants are created or left in the airflow. No cleanup is required other than a general wipe down of pure moisture. And the fog is composed of the same elements that we breathe, so walking thru a clean room fog is nearly identical to fog encountered in weather. Clean room foggers use deionized water, sterile water or water for injection; thus the water is quite pure. The fog can easily visualize turbulence and airflow patterns in an ISO suite. Balance of air pressure can be visually described between two clean areas, such as a barrier isolator and sterile room. Bio-safety cabinets and glove boxes can be tested for proper airflow.