STANDARDIZED CONDENSED MILK 



339 



How much 25% cream is required to raise the per cent fat 

 in the 7,000 pounds of milk testing 3.3% fat to 3.966% ? 



3.3 ir ^i 21.04 



3.96 



.66 



21.70 



Enough 25% cream must be added to the raw milk so that 

 each 21.7 pounds of standardized milk contains .66 pounds of 

 added cream and 21.04 pounds of the original milk. Hence 

 21.7 : .66 = 7000 : X ; X = 213. Ibs. of cream. 



Total batch, 7000 pounds. 



25% cream, 213 pounds. 



3.3% milk, 6787 pounds. 



Example 2. 



Amount of fluid milk in batch, 7,000 pounds. 

 Fat in fluid milk, 4.5 per cent. 

 Solids not fat in fluid milk, 8.5 per cent. 

 Fat wanted in evaporated milk, 7.8 per cent. 

 Solids not fat wanted in evaporated milk, 17.7 per cent. 

 How much fat should fluid milk contain? How much skim 

 milk must be added? 



Answer: 17.7 : 8.5 = 7.8 = X ; X = 3.75%. The fluid milk 

 must contain 3.75% fat. 



How much skim milk must be added to lower the per cent 

 fat in the fluid milk to 3.75 ? 



4.5 



3.75 



3.75 



.75 



Enough skim milk must be added to the fluid milk so that 

 each 4.5 pounds of standardized milk contains .75 pounds of 



