maximum exposure limit (MEL)



Highest allowable concentration of a chemical to which a worker may be exposed over a period. MEL is expressed usually in parts per-million (ppm) for an 8-hour reference period though some chemicals may require shorter reference periods.

Related Videos

Have a question about this term? Ask for help in the
Browse by Letter: # A B C D E F G H I J K L M N O P Q R S T U V W X Y Z