Albuquerque evening herald. [volume] (Albuquerque, New Mexico) 1911-1914, 1913-02-22
Directions for Operating the
Babcock Test

tPrcst Bulletin 40. sO5. New Mex
leo College OF Agriculture aud Me-
chaniC Arts aud Agricultural Expert
mcnt station. state College, y, NJ
Tho Babcock test T. 70 means uf de-.
t'rminius the pr cent of tat IN milk.
rrcsm and other duiry products. tn
tester L. u machine which separates
the tat from milk hy centrifugal force
and brings it into the graduated neck
Of the milk bottle 10 that the per
cent OF Tat Ia the milk may bc read
directly. The equipment consists Ut
the tester proper called the cen'ti-
tugC, - lt.6 q. e.. pipettc. milk AMI
cream test bottles, an acid measure,
quantity uf rulphuric aCid. and a
pair OF dividcrs 4 complete two
bottle outfit suitable for farm use.
can b, purchased Tor about $500
In making the test, great accuracy
o. required. Before taking u SAM
plo. the milk should be- wen mixed
10y shaking. II the milk is cold. II
should be warmed iu water heated to
about ! 10 degrees Fair. thvu shaken
thoroughly or poured back and form
from one bottle To- another. 80 that
the butter Tat may h., thoroughly
mixed With the milk. The iI.G ~ e.
pipettc should bc inserted immediate
~ Hud tho milk sucked To- iiiii"
above the mark on the neck 0t the
plpCttc The right iorefing,i CHu
be placed quickly over the top uf tho
pipcttc Go hold the milk II "a, TN.
por iT dry. M pressure MAY hr re-
leased to allow the milk Go run down
uutil even with the mark. TIL mix
should then To- transferred without
loss To- the milk bottle. This "a be-
done most easily hy holding the bot
tie In an inclined position aud al
lowing the milk tu run down he side
Of the bottle neck.
Sulphuric acid of specific gravity ui
is2 10 lisa should BE- added The
amount tu us is "a e. g. The acid
measure b. marked Go indicate that
amount II too little aCid o. used "t
uT thu acid " too weak. tn" cnsciu WI
not be- all dissolved aud the test viii
hr spoiled 81 the acid BE- too strong
OF too much Il used, the uasyin wit
bo burned and black chnrrcd sub
stances win iutrrmiN with thy tti
la adding the acid, the test huul,
should ho held m an Inclined poslboi
aud thu acid allowed To run down th'
side of the bottle The acid, h"iut
heavier than milk, goes tu the bot, \
aud forces the milk ~ shake ih'
bottle Immediately with q rotary M
ton until the aid ana milk are IA ~
uugitN iulAfh+ Ah' h'AiNil W -
acid Is to dissolve tn sultds-nut- it'
IN the milk. The chemical hc'l I"
causes the mixture to become N'''
hot and almost black in color.
while still hot. the bottles should
la placed in the CcntritugC and Whlii
ID al the proper speed. Dul rem
machines require different speeds an,
one should follow The directions tina
accompany the outfit The require,
sp.od may vary from 500 to l,sO'
revolutions uf the wheel per minut'
according to the diameter of tl'
whoel per minute. according To- me
diameter OF the wheel After whirl
Ing Tor live minutes. th' muchh'
rhould bc stopped and hot water o.
a temperature OF iiO degrees Fhhr
should be put IN IN sufficient quantity
to bring tn Cat up GO the meek ol
the buttlc. Then Whlrl Tor Two min
utcn more aud add water Ia bring th'
tat ali Within the graduated portion
az The neck. Whrl again for on'
minute. 10 make sure all tho tat hu
,ome into the bottle n-ck aud Il
clarity the line between the lat uh'
tho water,
THE fat as Il appears In the neci
~ ia, test bottle should have \'l
inUish cor straw color, and Dc clcurl'
disttnct from the water below An
black or fIoucuiou matter Ia ur q
the edg, uf the fai column houl'
not occur Il the tcnt N conducted
properly. t,
Ths reading should b, taken Will
the bottles are siill hot, 1875 20 10