Grade 



Date. 



(42) 



EXERCISE 22 



Object. — To standardize milk and cream. 



Apparatus. — Sample of milk and cream; Babcock test outfit; sample 



bottles; cream scales. 

 Step 1. Run test for fat on both cream and milk samples. 

 Step 2. Standardize 100 grams of 4 per cent milk from the tested cream and 



whole milk samples. 

 Step 3. Standardize 100 grams of 20 per cent cream from the tested whole 



milk and cream samples. 

 Step 4. Run fat tests on all standardized samples and record data. 



Report. 



Work out the following problems — 



1. One thousand pounds of 3.6 per cent milk is to be raised to 4 per 

 cent milk; how much skimmilk must be taken out? 



2. How much 30 per cent cream and skimmilk must be used to make 

 up 1000 pounds of 25 per cent cream? 



3. How much 36 per cent cream and 3.6 per cent milk must be used to 

 make up 800 pounds of 25 per cent cream? 



4. How many pounds of 40 per cent cream and 4 per cent milk must be 

 used to make up 90 pounds of 20 per cent cream? 



