Probit kills

conc. mg/l

log conc.

24 hrs

48 hrs

72 hrs

96 hrs

50

1.699

4.31

4.97

5.60

6.83

100

2.000

4.32

4.97

5.60

6.84

150

2.176

4.31

4.96

5.59

6.81

200

2.301

4.31

4.96

5.59

6.81

250

2.398

4.32

4.97

5.61

6.85