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Maximum Allowable Concentration MeSH Descriptor Data 2025
usually NIM; coordinate with specific drug or substance (without qualifiers)
Scope Note
The maximum exposure to a biologically active physical or chemical agent that is allowed during an 8-hour period (a workday) in a population of workers, or during a 24-hour period in the general population, which does not appear to cause appreciable harm, whether immediate or delayed for any period, in the target population. (From Lewis Dictionary of Toxicology, 1st ed)
Entry Term(s)
MPEL
Maximum Permissible Exposure Concentration
Maximum Permissible Exposure Level
Previous Indexing
appropriate environment heading (1966-1968)
Environmental Health (1966-1968)
specific agent (1966-1968)
Public MeSH Note
1991; see MAXIMUM PERMISSIBLE EXPOSURE LEVEL 1991-1999, see ENVIRONMENTAL EXPOSURE 1975-1990; for MAXIMUM ALLOWABLE CONCENTRATION see MAXIMUM PERMISSIBLE EXPOSURE LEVEL 1976-1999
The maximum exposure to a biologically active physical or chemical agent that is allowed during an 8-hour period (a workday) in a population of workers, or during a 24-hour period in the general population, which does not appear to cause appreciable harm, whether immediate or delayed for any period, in the target population. (From Lewis Dictionary of Toxicology, 1st ed)