9 o 



Condensed Milk and Milk Powder 



artificial refrigeration may store the evaporated milk, before filling, 

 in glass-lined storage tanks cooled with brine. This practice makes 

 it possible to mix all the batches of one day's make together and 



thereby increase the uniform- 

 ity of the product. At this 

 stage of the process the evapo- 

 rated milk is not sterile, nor 

 does it contain any preserva- 

 tive, such as sucrose ; it is not 

 concentrated enough to be 

 preserved by the absence of 

 moisture. If exposed to warm 

 temperatures for any length 

 of time, therefore, its acidity 

 will increase, thereby render- 

 ing the subsequent sterilizing 

 process difficult. 



Fig:. 35. Hand filling machine for 

 evaporated milk 



Courtesy of Arthur Harris & Co. 



FILLING- 



The cooled evaporated milk is filled into tin cans ranging in size 

 from eight ounces to one gallon. The gallon cans are usually filled 

 by hand. The filling of. the smaller cans is done by automatic filling 

 machines. 



Of late years much prog- 

 ress has been made in the 

 construction of different types 

 of filling machines for evapo- 

 rated milk. The openings in 

 the cans through which the 

 cans are filled range from the 

 Sanitary can, which is filled 

 with the top of the can en- 

 tirely removed, to the vent- 

 hole can with an opening of 

 not more than one-eighth inch 

 in diameter. The filling ma- 

 chines are constructed to fill 

 by gravity, under pressure, or r * 36 ' %&S!£*J5? M ™ tor 



in VaCUO. Courtesy of The Sprague Canning 



Machinery Co. 



