The Portable Fogger, also known as the Fog Pistol, is used in industrial clean rooms to visualize airflow leaks and locate turbulence around door entries and in clean areas. The Fog Pistol is hand held and battery operated for use in industrial areas where airflow leaks need to be found. The portable fogger, uses a glycol liquid, triethylene alcohol, to produce a paper white fog, which travels 10-15 feet depending on airflow velocity. The LI battery is rechargeable in a typical 1 hour period. Spare batteries are available if there is a need to do longer periods of fogging. The Portable Fogger fits nicely into your hand for movement around the clean room area, barrier isolators and fume hoods.