Chemical fume hoods are used to contain and exhaust chemical vapors. They come in a variety of types and designs and are used for various operations. When using a fume hood, it is important to have proper airflow, in order to avoid release of chemical vapors from the face of the hood into the worker’s breathing zone. C-Scan Technologies offers smoke containment visualization as a means of documenting a fume hood’s performance and for comparison to current standards (AIHA/ANSI, SEFA). This testing and certification procedure is a part of a lab’s chemical safety management program. Other aspects, including preventative maintenance and inspections, chemical exposure monitoring, and periodic ASHRAE 110 testing can give a facility a complete program for fume hood management.