Archive image from page 22 of Dairy laboratory manual and note. Dairy laboratory manual and note book dairylaboratorym01anth Year: 1914 EXERCISE 4 (Continued) (21) Step 6. Agitate each bottle until the curd is all dissolved, by giving it a rotary motion as soon as acid is added. Step 7. Put them into a centrifugal machine, whirl five minutes, fill to the neck with water about 130° F., whirl two minutes, fill to about the 9 per cent mark, whirl one minute, and read. Note.—Read the whole milk test from the top of the upper meniscus to the bottom of the lower meniscus. Report. Bottle No A B ' -
Archive image from page 22 of Dairy laboratory manual and note. Dairy laboratory manual and note book dairylaboratorym01anth Year: 1914 EXERCISE 4 (Continued) (21) Step 6. Agitate each bottle until the curd is all dissolved, by giving it a rotary motion as soon as acid is added. Step 7. Put them into a centrifugal machine, whirl five minutes, fill to the neck with water about 130° F., whirl two minutes, fill to about the 9 per cent mark, whirl one minute, and read. Note.—Read the whole milk test from the top of the upper meniscus to the bottom of the lower meniscus. Report. Bottle No A B ' - fat 1. Below give reasons for having the milk at 60° to 70°. 2. Why is the milk poured from one vessel to another before sampling? 3. Explain the ac- tion of acid in the test. 4 Why should each sample of milk be tested in duplicate? 5 What is the color of the fat column? - ~~1 JL -6 b-5 E-4 5-3 A §-2 ~1 ~o Eight-bottle hand tester. Farm size. Correct method of taking reading on whole milk bottles. From the extreme lower meniscus to the top of the upper meni-<
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