COPE EXTENSION SCOOP 



DESIGNED BY 



W. G. COPE, Chemist 



U. S. Bureau of Mines 



MANUFACTURED BY 



SCIENTIFIC MATERIALS CO. 



PITTSBURGH, PA. 



Used for introducing solids into Kjeldahl or other long- 

 necked flasks. The apparatus consists of an aluminum 

 weighing scoop attached to an extension by means of a 

 bayonet joint. The weighing scoop is detachable and of 

 such a size that it can be placed on a balance pan. 



This permits the sample to be weighed and introduced into the flask 

 without transferring and without getting any of the material on flask 

 neck walls. 



Permits most accurate results in Kjeldahl determinations 

 on food products, fertilizers and feed stuffs, also in the 

 determination of nitrogen in explosives. 



FRY RESISTANCE GLASS 



MADE BY 



H. C. FRY GLASS GO. 



IN THE PITTSBURGH DISTRICT 



DISTRIBUTED BY 



SCIENTIFIC MATERIALS CO. 



PITTSBURGH, PA. 



This is a real resistance glass as it resists the action of 

 both alkalies and acids and also temperature changes and 

 the effects of shocks incident to handling. 



Fry Resistance Glass is one that is extremely heat 

 resisting but not brittle, a very important feature as it is 

 essential that such glassware should withstand ordinary 

 handling under conditions as they exist in the laboratory. 



Complete line of Flasks, Beakers, and Petri Dishes. 



Style K. Flasks, Kjeldahl, with round bottom and long 

 neck. 



Size No. 

 Capacity, oz. 

 Capacity, cc. 



Stopper No. 



Net, Per Doz. $3.50 4.50 5.50 



Gross lots 10% discount; 5 gross, 15%. 



SCIENTIFIC MATERIALS CO., Pittsburgh, Pa. 



