Maximum Exposure Limit (MEL) 1
Maximum Exposure Limit (MEL) 1 : The maximum permitted concentration of a chemical to which a worker may be exposed over an extended period of time. Typically, MELs are quoted in ppm for an 8_hour reference period, though shorter periods may be quoted for some materials. MELs are, in many countries, enforceable by law. A list of chemicals for which MELs are defined in the UK is held at http: //physchem.ox.ac.uk/MSDS/mels.html [Oxford University, 2000 - Chemical Safety Information Glossary]
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