Concentration (ppm) No. of mortality
24h 48h 72h 96h
Control 0 0 0 0
3 0 0 0 0
15 0 0 0 0
60 0 1 6 13
120 3 10 19 21
Table 2: Cumulative mortality of common carp during acute exposure to PbCl2 (n=21, each concentration).