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Schoenman, Adolph / Milk testing : instructions for testing milk and dividing money for creameries, cheese factories and dairymen
(1894)

Part II,   p. [8] PDF (151.7 KB)


Page [8]


PART II.
THE GLASSWARE AND MACHINERY OF THE
                BABCOCK TEST.
  4. The Regular Bottles. [Fig. i.] The regular
Babcock test bottle should contain at least 40 c. c. up
to the neck. The neck is graduated from 0 to To per
cent. Each division of the graduated scale represents
.04 c. c. Five of those divisions are equivalent to one
per cent. of fat, when one pipette of 17.6 c. c. milk is
used.
  5. The Pipette. [Fig. 2.] The pipette should
contain, when filled to the mark, 17.6 c. c. A pipette
of this size will deliver a little less than 17.5 c. c. and
when of milk of average specific gravity, will weigh
i8 grams. The pipette should be accurately cale-
brated. It can be tested by weighing the amount of
mercury necessary to fill it to the mark. The weight
of mercury should be 239 grams. Always be sure
and buy a pipette marked 17.6 c. c. There are other
sized pipettes on the market but they are "fool"
pipettes and should never be used.
  6. Acid Measure. [Fig. 3.] A glass cylinder with
a lip to pour from and a single mark at 17.5 c. c. is the
best form for general use.
  7. Cream Bottles [Fig. 4.] are the same as the
regular bottle except that they have a bulb in the
neck capable of holding 1o per cent. of fat.


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