18 
LABORATORY MANUAL 
Question: (1) If 8 cc. of ammonia are added to 200 cc. of sour milk and 
the reading obtained is 3.7, what is the correct test of the milk? 
(2) If a sample of milk obtained from a 3568 pound lot gives a test 
of 3.6%, how many pounds of butter fat does the milk contain? 
(3) The following lots of milk are delivered by a patron during the 
week: 
Monday, 952 pounds testing 3.4%. 
Tuesday, 625 pounds testing 3.8%. 
Wednesday, 821 pounds testing 3.6%. 
Thursday, 690 pounds testing 3.5%. 
Friday, 582 pounds testing 3.7%. 
Saturday, 736 pounds testing 3.9% 
What was the total quantity of fat delivered by the patron 
during the week? 
(4) What is the average test of the milk delivered by the patron in 
problem 3? 
References: F. & W. H 32, 196; Van S. 23, 24; Jud. pp. 41-58; St. p. 
132. 
