166 



MILK 



There are several methods in which no acid is used. Instead, 

 a solution of sodium hydrate, sodium sulphate, and potassium- 



Fig. 59. Automatic buret. 



Fig. 60. Swedish acid bottle. 



sodium tartrate is the dissolving agent. As this mixture does not 

 generate as much heat as the Babcock mixture it is necessary to 

 heat the bottles to about 93 C. before centrifuging. 



Fig. 61. Acid dipper. Fig. 62. Rack for holding Babcock 



test bottles. (A. H. Barber Creamery 

 Supply Co.) 



None of these modifications give better results than the original 

 Babcock method and are hot likely to become popular. The 



