THE BABCOCK TEST 



67 



The Gerber Butyrometer. — Special forms of tes- 

 ter, test-bottle, etb., are used. The test uses 11 cc. of 

 milk, 10 cc. of sulphuric acid (1.825 specific gravity), 





c 



^^ 



FIG. 28 

 AUTOMATIC "RUSSIAN" PIPETTE 



FIG. 28a 

 'RUSSIAN''' TEST-BOTTLE 



and I cc. of amyl alcohol. The operations are carried 

 out about the same as in the Babcock test. 



The "Sinacid" (no acid) Test.— The distinctive fea- 

 ture of this test is that, in place of sulphuric acid, it 

 uses a patented mixture, consisting of sodium phosphate 

 and citrate, which, unlike sulphuric acid, is entirely free 

 from any dangerous properties; it uses also a colored 



