DEFINITION OF TERMS 235 



used erroneously in connection with cleansing dairy appa- 

 ratus. It is not always possible to sterilize a utensil 

 with steam unless it is placed under a pressure of ten 

 pounds for thirty minutes. This gives a temperature of 

 110 C. The expression "thoroughly scalding" is sug- 

 gested for the process of holding a dairy utensil in boiling 

 water for a minute or two, or of rinsing carefully with 

 boiling water, such as flushing a vat or steaming a can. 

 216. Thoroughly scalding is the process of heating 

 with steam or hot water to such a temperature that nearly 

 all the micro-organisms are killed. It is not sterilization. 



