Concentration (ppm) No. of mortality
24h 48h 72h 96h
Control 0 0 0 0
0.05 0 0 0 0
0.20 0 0 0 0
0.50 0 0 0 0
1.00 1 6 10 15
Table 1: Cumulative mortality of common carp during acute exposure to HgCl2 (n=21, each concentration).