Grade 

 Date . 



EXERCISE 16. 



(35) 



Object. — To determine the effect of varying amounts of acid in the Babcock 



test. 

 Apparatus. — Sample of whole milk; Babcock outfit. 

 Step. 1. To one sample add the regular measure of acid. 

 Step 2. To another add half the regular amount of acid, 8.8 cc. 

 Step 3. To another add 1 1/2 measures of acid, 26.3 cc. 

 Step 4. Mix and test in the usual way. 



Report. 



1. What is the effect of insufficient acid? 



2. Of too much acid? 



3. Write a full description of clearness, color and correctness. 



