Evaporatip MILK 
These filling ma- 
chines should be thor- 
oughly washed and 
freed from all remnants 
of evaporated milk ad- 
the 
parts 
valves 
after 
Remnants of 
hering to 
other 
each use. 
milk left in any part of 
the fillng machine de- 
and 
compose readily and 
impair the wholesome- 
ness and marketable 
properties of the prod- 
uct. This is an impor- 
tant point and one too 
Much 
evap- 
often neglected. 
of the 
orated milk may be the 
spoiled 
result of the use of un- 
unclean 
The 
sanitary and 
filling machines. 
FILLING 133 
erm rec AICO AAT WAST 
Pig. 55. 
Courtesy of F. G. 
Venthole filling machine 
Dickerson Company 
fact, that the evaporated milk is sterilized after it leaves the 
filling machine, is no excuse for unclean filling machines. 
Venthole can 
Fig. 56. 
Courtesy of 
F. G. Dickerson Company 
The 
operator should bear in mind that the 
milk running through an unclean filling 
machine becomes contaminated with 
millions of bacteria. The more bacteria 
it contains, the more difficult it is to 
render it perfectly sterile. Furthermore, 
sporeforms are prone to develop in 
the decaying remnants of milk; these 
spores are very resistant and require 
excessively high sterilizing tempera- 
tures to be destroyed. 
In the filling of the venthole cans 
the foaming of the evaporated milk 
frequently causes serious annoyance. 
‘This can be avoided by having the milk 
