EvaroratEp MinK—MojJoNNIER CONTROLLER 149 
to the five tin cans in the erder above indicated This is done 
by placing the cans in pairs, under the two-can venthole filler, 
furnished with the Controller, and the cups with the milk and 
bicarbonate marked corresponding to the empty cans, are now 
emptied into the filler. Care must be taken to keep the cans 
in the proper order. 
After filling, the cans are tipped, using preferably rosin 
solder. Should none of this solder be available, then great care 
must be exercised not to let any of the flux from the zine chloride 
solder enter the cans. Zine chloride flux has a very bad effect 
upon the milk, and will completely change the results. 
Sterilizing the Five Sample Cans.—The five sample cans. 
prepared as above directed, are now ready for the sterilizer. 
Place these in the cage and fasten the lid securely, and also turn 
down the screws in order to hold all of the cans securely into 
place. Adjust the cage in the sterilizer by means of the thumb 
screw on the right hand side, in order to keep them from having 
end play. Close the sterilizer door securely so that no steam 
escapes during the sterilizing process. 
Be sure to provide circulation of the steam through the 
vent on the pipe surrounding the thermometer. This little vent 
should be kept open during the entire sterilization operation. 
Fill the small pilot sterilizer with water to a point half way 
upon the gauge glass. Be sure to turn on the switch to start 
the motor in operation. Open the ‘‘steam start valve” and take 
five minutes to let the heat reach 190 degrees F. or 3 on the ster- 
ilizer scale. Then let the heat come up gradually from 190 de- 
erees to 240 degrees F. or from 3 to 8 on the thermometer, taking 
one minute for each 5 degrees as indicated in the following table: 
Actual Temperature Actual Reading | Point at which Mercury 
in upon should be at any given 
Fahrenheit Degrees Thermometer Scale time coming up 
240° 8 points 20 minutes 
230° 7 points 18 minutes 
220" 6 points 16 minutes 
210° 5 points | 14 minutes 
200° + points 12 minutes 
190° 3 points | 10 minutes 
