Condensed Milk and Milk Powder 69 



ity, the condensed milk should have a temperature of 60 degrees F. 

 Where this is not convenient, the observation may be made at any 

 temperature convenient and the reading corrected as follows: 



When the temperature is above 60 degrees F. multiply the dif- 

 ference between the observed temperature and 60 degrees F. by the 

 factor .025 and add the product to the observed reading of the 

 Beaume hydrometer. When the temperature of the observed read- 

 ing is below 60 degrees F. the corresponding product is deducted: 



Example: Beaume reading at 120 degrees F. is 31.2. Correct- 

 ed reading is 31.2 + [.025 x (120 — 60)] = 32.7. The specific 

 gravity may be calculated, when the Beaume reading is known, by 

 using the following formula : 



144-3 



Specific gravity = =— ; B. = Beaume reading 



F s 144.3 — B. ' 



Example: Beaume reading at 60 degrees F. is 33.1. 



144.3 



Specific gravity = = 1 . 2976 



144-3 — 33-i 



In the following table are assembled figures showing the spe- 

 cific gravity of sweetened condensed milk of different Beaume de- 

 grees, varying from 28 degrees B. to 37.8 degrees B. 



