134 DISINFECTION— STERILIZATION— DISINFECTANTS 



cooled. It is certain that all pathogenic microorganisms, except 

 the very few spore formers in that stage, are killed by proper 



Fig. 95. — A pasteurizer for cream to be used in making ice-cream. 



pasteurization. The process is largely employed in the 

 fermentation and dairv industries. 



