RARE SUGARS 



and 



OTHER FINE CHEMICALS 



"DIFCO" STANDARDIZED 



Being the first manufacturing firm in the United States to 

 make and extensively advertise rare sugars, we have steadily 

 added to our line, and our list now comprises the following: 



Arabinose 

 Dextrose (Glucose) 

 Galactose 

 Invert Sugar 

 Lactose 



RARE SUGARS 



Levulose (Fructose) 



Maltose 



Mannose 



Melezitose 



Melibiose 



Raffinose 



Rhamnose 



Saccharose (Sucrose) 



Trehalose 



Xylose 



OTHER CARBOHYDRATES 



Dextrin 



Mannite 



Inulin 



Salicin 



LABORATORY REAGENTS 



Invertase for Analytical Use 



Acid Potassium Phthalate Blood Serum, Desiccated Beef Extract 

 Fibrin Gelatin Decolorizing Carbon 



Tyrosine 



DEHYDRATED CULTURE MEDIA 

 Bacto-Peptone Proteose Peptone 



Carried in stock by the principal dealers in 

 Scientific Supplies 



Specify **DIFCO'' 

 WE INVITE COMPARISON 



Digestive Ferments Company 



Detroit, Michigan, U. S. A. 



