ON MILK AND MILK-TESTING 47 



Yes, anyone capable of following directions and 

 who will exercise proper care may learn in a short 

 time to use the test correctly. 



How should the milk sample be taken on the 

 weighing stand? 



The sample is best secured by using a sampling 

 tube, because it takes the same proportionate 

 amount from each quantity sampled and takes a 

 uniform column from the upper surface to the 

 bottom of the milk. When the quantity and qual- 

 ity of the milk varies but little from day to day, it 

 may be sampled with a small dipper with good 

 results. A graduated glass tube can be used by 

 taking lo or 20 c. c. for each 100 pounds of milk, 

 or I c. c. for each pound when sampling milk from 

 individual cows. The sample of a patron's milk 

 at a receiving station should be taken immediately 

 after it has been poured into the weighing can. It 

 should be transferred at once to the proper con- 

 tainer. Several forms of milk samplers or milk 

 thieves are on the market and most of them give 

 good results with milk. 



How much milk should be taken for a sample? 



Enough so that in case of an accident occurring 

 during the first test you would still have some left 

 to make another. About 6 ounces is .sufficient. 



When the value of a patron's milk is determined by 

 its fat content, how often should the milk be 

 sampled ? 

 Each quantity weighed in should be sampled and 



tested either by itself or by a composite. 



