112 MODERN METHODS OF TESTING MILK 



minute. Their centrifuges and 

 tubes can be used also in testing 

 for fat in milk by the Babcock 

 method. In Fig. 44 is shown 

 another form of electrical cen- 

 trifuge which is very satisfactory 

 FIG. 45 for collecting sediments. 



GLASS FOR COLLECTING A, mcthod Icss accuratc, but 



SEDIMENT IN MILK 



fairly satisfactory in the absence 

 of any better means, is to place about 4 ounces of milk 

 in a test-glass (Fig. 45) and let it stand for one or 

 two hours. The dirt collects in the bottom and its 

 amount can be roughly estimated by the eye. 



