LABORATORY SUPPLIES AND CHEMICALS 



77 



2149 



2151 



2148 



2149 



BURNER, Fletcher's Cast Iron Evaporating Burner. 



Sizes, inches 4 5 



Each .../..'..'. ]$2.00 2.50 



BURNERS, Radial, Fletcher's. 



No. 1 R burner ring 3^-in. gas used 12 feet per hour $2.50 



No. 2 R burner ring 5 -in. gas used 18 feet per hour 3.25 



3.50 



2149a BURNERS. As above, with wheel valve for gasoline gas 

 No. 1 R ..... 

 No. 2 R ........... ....... '/.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'. 



2150 BURNERS, Fletcher's Standard Boiling Burner. 



Diameter, inches, for vessels ...... . 



Each ........................................ 



2151 BURNERS, Low form, extra large, with gauze top; 



diameter, 2% inches; length, 14 inches, each 



3.75 

 4.50 



.$1.50 



height, 



7 

 2.00 



8 

 3.75 



5 inches; 



10 

 7.50 



.$3.00 



2151a 



2152 



2151a BURNERS, Boiling, Fletcher's, solid flame. 



Small, diameter 3J^-inch, gas used 12 feet per hour ...... $1.75 



Large, diameter 4^-inch, gas used 35 feet per hour .......... . . . 3.50 



2151b Extra Perforated Metal Caps for above. 

 Small, each 

 Large, each 



2152 BURNER, Fletcher's New Laboratory Burner, with stand for vessels and sand- 

 bath. 



Support for flask, diameter .................... 41^ 5^ 7 8 



Support for vessels flat, diameter ............. y 2 ny 2 9 n 



Each ..... ' .................................. $3.00 4.00 5.00 8.50 



