Fig. 1. Probit analysis. Probit analysis for the chronic LC50 determination of acephate. The observed mortality percentages were converted into probit values (represented by ‘y’ axis in graph), whereas graded concentrations of acephate were transformed into values in log10 scale (represented by ‘x’ axis in graph). Probit and log values were used to plot the graph which indicate 50% larval death in the log10 scale at 0.945, whose antilog is 8.71 μg mL–1 of acephate.
