Discussion Forum
Que.  If a 1:600 dilution of a test compound kills a standard population of Staphylococcus aureus in 10 minutes but not 5 minutes while a 1:60 dilution of phenol kills the population in the same time, what is the phenol coefficient of the test compound? 
a.  1 
b.  5 
c.  10 
d.  50 
Correct Answer:10
