48 



METHODS OF ANALYSIS. 



Table for the determination of maltose Continued. 



(c) Lactose. Official. 



Place 50 cc of the mixed copper reagent in a beaker and heat to the boiling point. 

 While boiling briskly add 100 cc of the lactose solution containing not more than 

 0.300 gram of lactose and boil for six minutes. Filter immediately through asbestos 

 and determine the amount of copper reduced by one of the methods given under (c), 

 page 51. Obtain the weight of lactose equivalent to the weight of copper found 

 from the following table: 



Table for the determination of lactose (Soxhlet-Weiri) . 



