EC50 2
EC50 2 : concentration of a toxic gas or fire effluent, statistically calculated from concentration-response data, that causes a specified effect in 50% of a population of a given species within a specified exposure time and post-exposure time. NOTE 1 for fire effluent, typical units are g. m-3. NOTE 2 for a toxic gas, typical units are . L/L (T = 298 K and P = 1 atm) - See: Volume Fraction. NOTE 3 The observed effect is usually a behavioural response, incapacitation, or death. The EC50 for incapacitation is termed the IC50. The EC50 for lethality is termed the LC50
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