EVAPORATED MILK MOJONNIER CONTROLLER 147 



2. A standard method of determining, by means of a pilot 

 sterilizer, a viscosimeter and a color test, the proper viscosity 

 and color that the evaporated milk should have when it comes 

 from the sterilizer ; and 



3. A standard method of determining the amount of bicar- 

 bonate of soda that must be added to any given batch to evap- 

 orated milk in case its properties are such, that it is unsafe to 

 subject it, without such treatment, to the temperature condi- 

 tions that fall within the range of the standardized process of 

 sterilization. 



Equipment for Mojonnier Method. The equipment designed 

 for this method of evaporated milk control, is illustrated in 

 Fig. 65, and consists of the following apparatus : 



1. One pilot sterilizer with motor, complete 



2. 2 viscosimeters 



3. 1 venthole sample can filler 



4. Glassware for making up and measuring sodium bicarbon- 

 ate solution 



5. 1 torsion balance 



6. Open-top cups and venthole tin cans. 



Preparation of 10 <%-. Sodium Bicarbonate Solution. The -bi- 

 carbonate of soda is used in this test in the form of a 10 per 

 cent solution. This solution is prepared as follows : 



1. Weigh empty bottle to .01 ounce 



2. Add 3 ounces bicarbonate to bottle 



3. Add 27 ounces warm water to bottle. 



Shake thoroughly until the bicarbonate is all dissolved. 

 Draw out as needed into dispensing bottle, filling the sarnie not 

 over half full. Keep remainder tightly corked in the stock bottle 

 until needed. Should the bicarbonate crystallize out, prepare 

 a new lot. The above solution contains exactly 10 per cent 

 sodium bicarbonate. 



Adding the Sodium Bicarbonate Solution to Sample Cans. 



Arrange in a row five open-top cups, marked X-l-2-3-4 respect- 

 ively. These cups are furnished with the Controller. Cup 

 marked X is blank, to which no bicarbonate is added. To cup 

 marked No, 1 add one charge of sodium bicarbonate from the 



