The hood should have adjustable interior baffles, preferably with a remote baffle adjustment device located on the front of the hood rather than inside. If a hood is chosen with fixed baffles, the researcher must acknowledge that he or she is aware that the baffles can not be adjusted for work with fumes that are heavier or lighter than air. Hoods should have sash stops. If sections of a hood are combustible, then they must have a Class A Interior Finish. If radioactive Iodine-125 is to be used, than an approved radiological fume hood with a HEPA filter must be installed.
Stainless steel is usually the lining material recommended for radioisotope hoods.
A vacuum breaker must be installed on all serrated tip faucets.