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DAIRY LABORATORY GUIDE 



EXERCISE 12 



TESTING CONDENSED MILK 



Object: To determine the percentage of butter-fat in 

 condensed milk, containing no added sugar. 



Apparatus : Sample of unsweetened condensed milk, four 

 milk bottles, 50 c. c. graduate, and testing outfit. 



WEIGHT METHOD 



Steps: 1. Number bottles 1 to 4. 



2. Balance bottles 1 and 2 on the cream scales; then 

 weigh into each 9 grams of the sample. 



3. Add 9 grams of water to each bottle and dissolve the 

 sample as much as possible before adding the acid. 



Add about 10 c. c. of acid to the sample; then complete the 

 test as usual and record the reading. 



VOLUME METHOD 



Steps: 1. Measure into the graduate 20 c. c. of the 

 sample; then add to this the same amount of water. Shake 

 well until the milk and water are thoroughly mixed. 



2. Measure 17.5 c. c. of the mixture into bottles No. 3 

 and 4; then complete the test as described under the previous 

 method. 



3. Record and correct all data according to the previous 

 rule. 



Data: 



