Condensed Milk and Milk Powder 



i 



m 



» 



36; 



37f 



degrees F. Note the thickness of it ; or, finish the batch, 

 at a constant temperature, say 120 degrees F. Draw 

 a sample into a tin cup and note the thickness by exam- 

 ining the milk when pouring from a teaspoon. The 

 transparency of the milk when thus held against the 

 light is a good indication of its density. The last 

 method is preferable because of its greater rapidity. 



Use oe Beaume Hydrometer. — Beginners and 

 inexperienced operators do well to take numerous sam- 

 ples from the batch in the operating pan and to start 

 sampling early, so as to avoid over-condensing. The 

 use of a Beaume hydrometer, especially constructed 

 for sweetened condensed milk, graduated from 30- to 

 37 degrees B. and with subdivisions of one-tenth de- 

 grees, is an additional safeguard to insure accuracy 

 and uniformity of thickness. No definite figure at 

 which the Beaume hydrometer should be read can be 

 stated, that would show the proper density under all 

 conditions. The Beaume reading of sweetened con- 

 densed milk of the proper concentration varies with 

 such factors as per cent, of fat, per cent, of sucrose 

 and per cent, solids, ratio of concentration, and tem- 

 perature of the condensed milk when the reading is 

 taken. However, for general guidance, it may be 

 stated that condensed milk of proper density, made 

 from fresh milk of average richness, and containing 

 sucrose at the ratio of sixteen pounds of sugar per 

 one hundred pounds of fresh milk, will show a Beaume 

 reading of about 33.5 degrees B. at 60 degrees F., or 

 about 32 degrees B. at 120 degrees F. Sweetened con- 

 densed skim milk, containing appro'ximately 40 per 

 cent, sucrose will show a Beaume reading at 60 de- 

 grees F. of about 37 degrees B., or about 35.5 degrees 

 B. at 120 degrees F. 



Correction oe Hydrometer Reading eor Tem- 

 Fig. 19. Beaume PERATuRE. — The Beaume hydrometers used in Ameri- 



hydrometer for . . . . . 



sweetened can condenseries are graduated to give correct read- 

 condensed milk . , , « TJ - ,, , . , 



courtesy ings at 00 degrees .b . If the readings are to be correct, 



°' Mig as c"o abue or ^ ^ i s desirable to convert them into specific grav- 



