COMPOSITION AND PROPERTIES OF Miuc POWDERS 



321 



Solubility of Milk Powders of Film-Drying Process, and 

 of Spray-Drying Process. 



Total Solids 



The solubility tests, the results of which are recorded in the 

 foregoing table, were made as follows : 



Two samples of film-process powders and two samples of spray- 

 process powders were used. Twelve grams of each powder was 

 added to 200 cc. of water at a temperature of 78.5 degrees F. The 

 four samples were placed into a mechanical shaker and shaken for 

 ten minutes. 



After shaking, 100 cc. of each lot was poured through a paper 

 filter and the filtrate analyzed for percentage of total solids. 



The remaining 100 cc. of each lot was heated to the boiling 



