360 IOWA DEPARTMENT OF AGRICULTURE 



above, and place the box in position as shown in figure 8, leaving 

 the cover off. Sot tlie can covers upright along the sides of the 

 box inside, with the tops of the covers against the sides of the box. 

 As one side is covered by the strainer cloth there is space against 

 the other three sides, giving room for at least three can covers. 

 Place the cover on the box and steam for five minutes. Then remove 

 ihe cover and take out the can covers, handling only the top edge. 

 Shake out any water collected in the covers and place them, top 

 down, on a table. It is important to observe this, so that the inside 

 of the cover is uppermost. These covers will dry within two or 

 three minutes, after which they should be placed tightly on the 

 dry cans. Handle only the edge of the cover which remains outside 

 of the can. The strainer cloth should remain hanging in place with 

 the cover on the box until it is to be used at milking time. 



TO STERILIZE SEPARATOR PARTS. 



The miik-receiving tank of the separator, the same as a milk pail, 

 should be steamed five minutes while inverted over the steam outlet 

 pipe. For other separator parts, use the box the same as for can 

 covers. Wash the parts thoroughly and when the temperature of 

 the steam is 205° F. or above, place the box in position as shown in 

 figure 7. Place the separator parts in the box and put cover on. 

 .\llow to remain for five minutes. If the parts are too large for 

 the box, a special case should be constructed. After steaming, keep 

 the tank and separator parts in a clean place free from dust. 

 COST OP OPERATION. 



The cost of operation for the sterilization of two lO-gallon cans, 

 with tops, two pails, and strainer cloth, using kerosene at 10 cents a 

 gallon will be about eight-tenths of a cent. This cost is based on 

 rhe following figures : Each burner consumes one-half pint of oil au 

 iiour, making a total of 1 pint of kerosene, which at 10 cents a gallon 

 amounts to 1^4 cents for fuel per hour. Starting with water at a 

 temperature of 60° F. and with the water 1 inch deep in the roasting 

 pan, about 12 minutes is required to heat the water and generate 

 steam at a temperature of 205° F. Five minutes is then required 

 for each can, the same for each pail, and the same for covers and 

 the strainer cloths. Thus the 2 cans require 10 minutes, the 2 pails 

 the same, and the covers and strainer 5 minutes, making a total 

 of 25 minutes, which added to the 12 minutes required to generate 

 steam, makes a total of 37 minutes for the operation. In this opera- 

 Lion no time has been allowed for changing utensils. Tavo minutes 



