Grade 



Date 



(50) 



EXERCISE 30. 



Object. — To determine the influence of the change of inflow on the propor- 

 tion and richness of cream, and the loss of fat in the skimmilk. 



Appabatus. — Separators in separator room; quantity of whole milk. 



Step 1. Separate half the milk with faucet wide open and speed uniform. 



Step 2. Separate the other half, starting with faucet wide open, then close 

 till cream becomes noticeably thicker. 



Note. — Maintain correct and uniform speed. Save samples and test. 



Report. 



Name of separator Size . 



Write the reasons and effects of the variations that you have found in 

 this exercise. 



