PHYSICAL AND CHEMICAL EXAMINATION OP MILK 



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This test differs from the Babcock test in mechanical devices, not 

 in principle. A specially constructed pipet is intended to facilitate 

 discharging the milk into the test bottle. The bottle also is 

 specially constructed and the hot water is distributed to the 

 bottles while the centrifuge is in motion. 



Gerber Butyrometer. — The principle involved in this test also 

 is the same as in the Babcock test, but the bottles, pipets, etc., are 

 of different pattern. Only 11 c.c. of milk are used with 10 c.c. 

 of sulphuric acid mixed with 1 c.c. amyl alcohol. The separa- 

 tion of fat is said to be facihtated by the addition of amyl alcohol. 



