ON MILK AND MILK-TESTING t$ 



Example: 20 is an aliquot of 100, resulting from 

 the division of 100 by 5. 



How may a representative sample of cheese be se- 

 cured for the fat test? 

 Where possible, cut a wedge-shaped piece reach- 

 ing from the circumference to the center of the 

 cheese. When this is impossible, three plugs 

 should be taken with a trier reaching halfway or all 

 the way through the cheese, one near the circum- 

 ference, one halfway to the center, and the third 

 near the center. In either case the sample secured 

 may be made fine by passing through a meat 

 grinder or by cutting to very fine pieces. Thor- 

 oughly mix before taking the sample. 



How much cheese is taken for the test and how is 

 the per cent calculated? 



^ix grams gives good results, but 4.5 grams or 9 

 grams may bemused. In either case, when the ordi- 

 nary cream test bottle is used, to obtain the per 

 cent of fat divide 18 by the weight of cheese taken 

 and multiply the observed reading by the quotient. 

 Example : If 6 grams of cheese were taken and the 

 observed reading was 12, what was the per cent 

 of fat? 



I8-^6=3. 



i2X3=36=per cent of fat. 



How is the fat in cheese determined by the Babcock 



test? 



Weigh into a cream bottle the quantity to be 



used. If 6 grams are taken, add 12 c. c. of hot 



water to make 18 grams in the bottle, shake thor- 



