METHODS OF REDUCING THE GERM CONTENT 



517 



HOT WATER HOT WATER 



OUTLET^ INLET WAT8 M/LK 



J / C-J... ./ / 



V/EW 



Pipe connect/one removed 

 *> *hor </oubte tubes. 



S/OE V/EW 



Fig. 204. A double-tube milk heater. (S. H. Ayers in Circular 184, Bureau 

 of Animal Industry, U. S. Dept. of Agriculture.) 



Fig. 205. Willmann regenerative pasteurizer. 



