THE CLEAN RINSE 73 
THE CLEAN RINSE 
A most important operation is the clean rinse. 
This means the use of clean cold water or clean 
warm water to wash away all traces of soda or 
alkali powder after brushing. It should be used 
in abundance enough to give a thorough rinse. 
STERILIZING BY STEAM 
The purpose of steril- 
izing is to kill bacteria. 
Some bacteria are so 
tough that they are 
not killed by heat lower 
than the heat of boiling 
water. The most per- 
fect sterilizing is done 
by steam in a metal 
sterilizer under several 
pounds pressure. Such 
sterilizers are beyond 
the reach of the aver- 
age dairyman. A _ jet 
of steam will do good 
sterilizing if a can or 
pail is kept over it long enough, but a momentary 
application does not sterilize it. 
