APPENDIX 



93 



TESTING 



Causes 



Too warm milk . . 

 Too strong acid . . 

 Too much acid . . 



Effects 



, Chars fat 



Insufficient mixture 

 Foreign matter 



Cold milk 



Cold acid 



Weak acid 



Insufficient acid. . 



Dark sediment 



White fat 



White sediment and light- 

 colored fat 



L^av^v*.^ *...*.... 



bottle \ 



pipette J 



Insufficient speed (tester) 



Too cold 



Delay in reading 



Broken pipette 



Too hot 

 Unclean 

 Unclean 



Sample by weight 



More acid 



Higher speed 



More heat 



Double neck bottle 



Maintains uniform tem- 

 perature 



Maintains uniform speed. 



Easiest controlled 



Breaks fewest bottles .... 



Does not tremble 



Easiest balanced 



Has top and bottom bear- 

 ing 



Necks of bottles not ex- 

 posed 



Low reading 



. . High reading 

 . Cream 



.For skim milk 

 For buttermilk 



Best tester 



