The book Questions And Answers On Milk And Milk-Testing was written by author Charles Albert Publow Here you can read free online of Questions And Answers On Milk And Milk-Testing book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Questions And Answers On Milk And Milk-Testing a good or bad book?
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If a sample of milk read 108 on the board of health lactometer at 66° F., what would its specific gravity be at 60° F.? In this problem the temperature correction may be made first, then convert to the Quevenne reading by multiplying by .29, and finally prefix the figures i.o. 66—60=6. 6X'3=i'S. 108+1.8=109.8. 1 09.8 X. 29=3 1. 84. The Specific gravity, therefore, is 1.03 184. Between what graduations on the board of health lactometer may normal milks vary? Between 103 and 115 and in some few c...ases milk may read as low as 100 or as high as 118. Between what graduations on the Quevenne lacto- ' meter may normal milks vary? Between 30 and 34, but in rare cases the milk may read as low as 29 or as high as 35. Upon what law of physics does the action of the lactometer depend? It depends upon the fact that a solid body float- ing in a liquid displaces a weight of the liquid equaling the weight of the floating body. ON MILK AND MILK-TESTING 3I How should the lactometer reading be made? It may be conveniently made by placing the milk in a cylinder, i^ inches in diameter and lo inches high, then lowering the lactometer in the milk until it floats.
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