Archive image from page 21 of Dairy laboratory manual and note. Dairy laboratory manual and note book dairylaboratorym01anth Year: 1914 Grade, Date. (20) EXERCISE 4. Object.—To make a test of milk for butterfat, by the Babcock method. Apparatus.—Two whole milk bottles; a ce. pipette; acid measure; acid; sample of whole milk; two sample bottles; hot water bath. Step 1. Practice using the pipette with water until you can reasonably adjust the amount to be taken; cc. Correct manner of taking reading with calipers. Correct position for filling bottles Step 2. Always have milk betwee
Archive image from page 21 of Dairy laboratory manual and note. Dairy laboratory manual and note book dairylaboratorym01anth Year: 1914 Grade, Date. (20) EXERCISE 4. Object.—To make a test of milk for butterfat, by the Babcock method. Apparatus.—Two whole milk bottles; a ce. pipette; acid measure; acid; sample of whole milk; two sample bottles; hot water bath. Step 1. Practice using the pipette with water until you can reasonably adjust the amount to be taken; cc. Correct manner of taking reading with calipers. Correct position for filling bottles Step 2. Always have milk between 60° and 70° F. before drawing sample with pipette. Step 3. Mix the milk thoroughly by pouring from one vessel into another before drawing sample. Always pour down the side of the vessel. Step 4. Put cc. of milk into each of two whole milk bottles. Allow the milk to run down along the neck by holding the pipette and bottle at an angle of about 60°. (Letter one sample 'A' and the other 'B'.) Step 5. To each bottle add cc. of sulphuric acid ( to s. g.), using an acid measure. Turn bottle slowly as acid is added, allowing acid to run down the sides of the neck.
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