The highest concentration at which a pollutant can be present and not exert an adverse effect on the Biota, used to experimentally determine the toxicity of the chemical.
MAXIMUM ACCEPTABLE TOXICANT CONCENTRATION (MATC)
Meaning of MAXIMUM ACCEPTABLE TOXICANT CONCENTRATION (MATC) in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012