Table 18. Copepod Mortality at Different Acid-Sea Water Dilutions. 



Dilution 



Control 



1:200 



1:500 



1:1,000 



1:2,000 



1:5,000 



pH 



7.7 to 7.9 



2.0 



2.5 to 2.8 



2.9 to 3.1 



5.9 to 6.0 



6.1 to 6.5 



Approximate Percent 

 Dead After: 















2 min. 







100 



90 



70 











5 min. 









99 



95 



50 







10 min. 









100 



99 



50 







30 min. 











99 



50 







60 min. 











99 



50 







after SHL, 1972 



136 



