Grade 

 Date . 



(26) 



EXERCISE 9. 



Object. — To determine the percentage of fat in buttermilk. 



Apparatus. — Sample of buttermilk; two skimmilk bottles; two whole milk 



bottles; pipette; acid measure; mixing beakers, and acid. 

 Step 1. Measure out first 17.6 cc. of buttermilk in each of the skimmilk 



bottles; also make up duplicate tests of buttermilk in whole milk bottles, 



as buttermilk may be too high in fat content for skimmilk bottles. 

 Step 2. Complete the tests as before. Read the test which is the most 



accurately measured. 



At the bottom of the page explain — 



1. Why are two sets of bottles used for the buttermilk test? 



2. Why is a little more acid used than with the whole milk test? 



3. How many pounds of fat in 1700 pounds of buttermilk with the above 

 test? (Show operation.) 



