356 Marine Microbiology 



TABLE 4 



Thermal Inactivation of Various Marine Phages 

 Suspended in Sea Water Broth 



THE EFFECT OF TEMPERATURE 



Thermal Inactivation 



The resistance to thermal inactivation of six of the marine 

 phages was examined by exposing the phages, at a titre of 10^ 

 particles/ml, suspended in sea water broth, to temperatures of 

 45, 50, 55, 60 and 65 C, for periods up to one hr. A loopful of 

 each preparation was withdrawn at intervals and tested for 

 lytic activity on seeded agar plates. The results are given in 

 Table 4. In no case was inactivation evident within one hour's 



