CONTENTS 



Freezing point of milk 



Electrical resistance and conductivity 



Refractive index of milk 



PAGES 



101 

 101 

 101 



CHAPTER V 



The Testing of Milk and Cream 

 Apparatus and chemicals 

 Accuracy of the glassware 



Reagents used in calibrating 



How to use the burette 

 Testing milk for butter-fat by the Babcock method 



Sampling the milk 



Single samples of milk 

 Composite samples of milk 

 Jars for composite sampling . 

 Taking composite samples 

 Objection to composites 



Care of the milk sample 



Preparation of sample for the test 



Milk test bottles . 



Measuring the milk into the test bottle 



Adding acid 



Whirling and adding water . 



Reading the test . 



Abnormal appearance of the fat column 

 Cream testing . . 



Sampling the cream 



Care of the cream on the farm 

 Sampling by the cream hauler 

 Composite samples of cream . 



Care of the cream sample 



Preparation of the cream sample for the test 



Weighing the cream into the test bottle 



Cream test bottles 



Adding the acid 



Whirling and adding water 



Reading the test . 



Purpose and use of glymol 



