110 GRADING AND TESTING MILK AND CREAM 



ing, cut off all the upper curve on the fat column or add a 

 couple of drops of white mineral oil (glymol) to destroy the 

 meniscus." 



THE SHAW TEST FOR FAT IN BUTTER 

 APPARATUS REQUIRED 



" Babcock centrifuge or tester. 1 



" Shaw separatory funnels. 



" Balance which is sensitive to o.oi gram. (A torsion bal- 

 ance, such as is used in testing for moisture, will answer if it is 

 in good condition.) 



" Accurate set of metric weights. 



FIG, 28. Separatory funnels used in the Shaw test. 



" Glass cylinder graduated at 9 and n c.c. 



" loo-c.c. glass beaker. 



" Wooden rack for holding separatory funnels. 



" Support for separatory funnels on balance. 



" In addition to the above a special socket to hold the separa- 

 tory funnels will be required. As shown in the cut, this differs 

 in no material way from the socket ordinarily used in the Bab- 



*L. F. Nans. 



