PRODUCTION OF MILK OF LOW BACTERIAL CONTENT. 
29° 
TABLE 10.—Number of bacteria per cubic centimeter introduced into milk through 
unsterilized utensils. 
t 
Utensils Utensils | | Utensils | Utensils 
Utensils | washed held 8 | | Utensils | washed held 8 
Sample No. steril- directly hours Sample No. | steril- directly hours 
; ized. after before | ized. after before 
milking. | washing. | milking. | washing 
1 ee ng 27,000 225, 000 GZOROOOR|| P2ie aes ae ee ZA OOOH Mel SLO O00) hese eee 
7h eet Nn 58, 000 1, 140, 000 SZOKOOO | P28 se ceseeeeera 25, 000 9203 000N Ease eases 
Bo RSE eee ee 54, 000 ZO OOOH Ss S0OR000E! | 29852 wate e tea. es 16, 500 ONE OUO lessccaseccs 
ASR hat ses 2 83. 000 620% 0008 eT S005000) || (305s: a2 ne 10, 500 AKO (00) ascbacssoec 
DD) scan es meee 28, 000 680, 000 COX OOOR ils one eee sc eee ae mee SYA QUO Me Sassoccuse 
Ta ek ee ee ee 96, 000 1, 080, 000 EASON OOO Oo eee Se ee orien 44000 0p hase see 
U Sse eae eae 11, 800 490, 000 CAD) COO: I BWossacocases sacs souaacetee ISO; O00) |eaaascoacer 
coh 2) SS See a aee 39, 000 850, 000 SOON OOON RG 42 shsatose eas eee eect ZEW O00) |escadscacoc 
ee 8 fe He hire EN 23, 600 840, 000 SONOOOR| Sowers eee es eae) eee SISSO0O et Sareatee 
TI) ese eras erste? 98,000 | 1,450, 000 CEOS O00) Wes Senator oaco ee sheetase OV WOO se Saescecar 
IL Se Seeks Re eee PME ADD | POO CO ASSO CO sll SWieeesocoassocess|secuscsce= Bis}, WOO) esonososcce 
1A. re eae eae PAOD als COs OOO: 94, CANS COO) {| Siete acouesne sks cecaacence AAD) OOO | aeasecoease 
ay GE Rs ee er 10, 200 AAD OOO) ||. 1s PAO), O00) eles Sebeeeccosedlsaccosaaae CS, 0U0 Wesoos ses coc 
Ae Toe ee Mr) ge 22, 000 GLOKOOO) IL S40 COON AO seco oo esas secre = (AOS COO Nos sesesacen 
15) 2 5o eae ee ce 12, 100 3405 000M fal O80 O00EI Ate eee esece ee ee os oce SD CUM easaseasoce 
Ose ese ees 42, 000 GSOROOOM el AO ZOS OOO: 42 eyes eee: eee seer eeaye = BOS 0008 | Saeeeeaetee 
735 See eee 16, 400 AAONOOOF seat CO TO00 S| 43 ees ee ae eee AOR OUO ee doe ecses 
Ie SSRs omnes 22, 800 SOG 000 Fs 820 1000 Fae secrete ssc oe =| 230; 0008 Sasso seeose 
LORE teers ee: 24, 000 3045 000F ae 2? 200NCO0T pa Oka soe eee es oe IO U0) ee Sececanc 
OAD ccs eee 37, 000 AGOROOOE| M44 S00T000) I t4Ghe oe aa, eee eee ee 230 000; See ae eee 
2 ey tae ae 1395008 eleo205 0008 ee ates e oe Api ectatn alae TL ies nen 1'S2 10005 |S sees 
DE en ats Se Berea 57, 000 C905 O00 |soscesesen- [Rel eats a re reached eae By ORONO" seoacese ook 
PBN Sater Se ea 1452007 O00 K000s| Gate aaeea. AOI ee Ee doe ere Oreck ae dou SOOKOOOF Ee Sees aa= 
Dl. Ss aa ea 15, 500 7h, WOO) aso aeeesose D0 Maske eisoucesets eae ris G7iO;0000 Seeman == 
DS aaa ay eek eee 8,000 | 1,940,000 |.......---. | 
BU GUee eee ya cic ae 7, 600 OOO seaaeasasee Average...| 31,040 666,520 | 1,667,000 - 
Several determinations of the total number of bacteria in washed 
cans and pails were made just before milking. They were obtained as 
follows: Four hundred cubic centimeters of sterile water was placed 
in each utensil and vigorously shaken, the contents were then poured 
into a sterile receptacle and the number of bacteria determined in the 
usual way. The results of some of the determinations are shown in 
Table 11. Five-gallon cans were washed, as has been described, with 
hot water at approximately 54.4° C. (130° F.) in which washing 
powder was dissolved. The interior of the utensils was scrubbed with 
a brush, then rinsed, inverted, and left uncovered in the milk house. 
The number of bacteria per can ranged from 292,000,000 to 5,520,- 
000,000 and in the pails from 2,400 to 12,600,000. Table 11 also shows 
two counts of pails and cans which had been held eight hours before 
being washed, one can showing 15,600,000,000 and the other 
16,800,000,000 bacteria, while the pails showed 44,000,000 and 700,- 
000,000 bacteria, respectively. The results show the great variation 
that may occur in can and pail counts when held under different 
conditions. 
