34 A DAIRY LABORATORY GUIDE 



reading. Note any change in the lactometer 

 reading, and explain the reasons for this 

 change. 

 4. Take the Quevenne reading of a sample of 

 skimmed milk at 60° F. 



Compute what the reading would be if the tem- 

 perature were four degrees higher. Verify 

 your results by warming the sample and tak- 

 ing the reading. Be sure to mix the sample 

 thoroughly after warming it. 



What is the chief advantage of the Quevenne 

 lactometer over other kinds? 



Why should the temperature of milk not be above 

 70° F. or below 50° F when the lactometer 

 reading is taken? 



