Definitive test. (i) The purpose of the definitive test is to determine the 24, 48, 72, and 96—hour LC50 values and the concentration-response curves.
Definitive test. (i) The purpose of the definitive test is to determine the concentration response curves, the EC10’s, EC50’s, and EC90’s for algal growth for each species tested, with a minimum amount of testing beyond the range-finding test.