Grade 

 Date . 



(30) 



EXERCISE 12. 



Object. — To determine the specific gravity and adulteration of milk. 



Apparatus. — Two samples adulterated with water; one normal sample; 

 lactometer and cylinder; thermometer; test outfit; mixing beakers. 



Step 1. Proceed as in Exercise 11. 



Step 2. Record data, figure out solids not fat, whether samples are adulter- 

 ated or not. If adulterated, nature and percentage of adulteration. 



