174 



CENTRAL SCIENTIFIC CO., CHICAGO, U. S. A. 



No. 3432. 



No. 3440. 



3432. 



3433. 



3436. 



3438. 



3440. 



3446. 



3448. 



No. 3446. 



No. 3448. 



No. 3438. 



CRUCIBLES, Opaque Fused Silica, wide form, 99.8% SiO 2 . May be subjected continuously to 

 temperatures up to 1200C., and for short periods to much higher temperatures. Not affected 

 by rapid changes of temperature, nor by acids, except hydrofluoric, and above 400 degrees C., 

 phosphoric. 



No 000 



Diameter, inches 



Height, inches 



Capacity, cc 4 



Each . . 



00 



1% 



10 

 .75 







1% 

 1 



15 

 .75 



1 

 1% 



25 

 .94 



2 



2% 



1 7 /16 



40 



1.13 



3 



2% 



1% 



65 



1.57 



CRUCIBLE COVERS, Opaque Fused Silica. 



For crucible, No 000 



Diameter, inches 1% 



Each . 63 



00 

 1% 

 .63 



1 



2% 

 .75 



2 



2% 

 .94 



3 



2% 

 1.13 



CRUCIBLE, Opaque Fused Silica, Caldwell Form, with flanged bottom for perforated platinum or 

 porcelain disk. Diameter at top, 1% inches; height, 1% inches 1.88 



PERFORATED PORCELAIN DISK for No. 3436, see No. 5366. 

 CRUCIBLES, Silver, spun from pure sheets, with cover. 



No A B C D E F 



Capacity, cc 20 30 50 75 100 150 



Diameter, inches 1% 1% 14 2 2% 2% 



Height, inches 1% 1% 2 2& 2y 2 2% 



Approx. weight, grams 35 45 '60 80 100 150 



Each 3.75 4.80 6.30 8.40 10.80 15.75 



CRUCIBLES, Skidmore's Normal School Retort and Crucible,' spun of thin iron enabling it to 

 be easily brought to a red heat in the flame of an ordinary burner. Can be used as an open 

 or closed crucible, or retort. Specially adapted for use in making oxygen, in oxidation and 

 reduction experiments, and in dry or steam distillations. 



No A B 



Capacity, ounces 1% 6 



Each 1.05 1.65 



CRUCIBLE HOLDER for use with any ordinary 60 degree funnel. Especially efficient, as the 

 ring covers only about % inch of the unper rim of the crucible. Can be used with Gooch, Cald- 

 well, Alundum or Johnson's Clay Crucibles. Made of one piece of soft rubber. 



No A B 



For crucibles, top diameter, mm 27 35 



Each . 30 .35 



CRUCIBLE HOLDER, Bailey's, of rubber, to take No. 

 funnel, as shown. Rubber holder only 



Gooch crucible. 



C 

 40 

 .40 



For use with a 2 inch 

 .35 



