6 4 



MILK AND DAIRY PRODUCTS PART 



a 



The results obtained by the Babcock test with whole milk 

 are very satisfactory, and compare closely with those got by the 

 gravimetric methods. 



For exact determination of fat in separated milk this 

 Babcock method is not to be re- 

 commended, even with Ohlsson's 

 improved bottles (which are, un- 

 fortunately, easily broken). It can 

 be used for testing milk from a 

 separator to see if it is working 

 properly within certain limits, but 

 a more exact determination should 

 not be attempted, as this method 

 gives a lower result (O'OG-O'OS per 

 cent.) than does the Rose-Gottlieb 

 method. 



The Babcock test is used chiefly 



FIG. 27. Reading the Column 

 of Fat, 



FIG. 28. Ohlsson's Double-necked 

 Bottle for Determining the Fat in 

 Separated Milk. 



in America and Australia ; in fact, in North America it is 

 almost exclusively the sole " practical " method employed. 



