170 



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



Nos. 3368-70. 



No. 3372. 



CRUCIBLES, ALL KINDS 



3360. CRUCIBLES, Alundum, for general laboratory use. These crucibles will stand any temperature 



available in the laboratory, and this with their high thermal conductivity, makes them valuable 

 for eoal analysis, drying materials, igniting filters, etc. Furnished in fine mixtures only. 



No A B C D E 



Capacity, ce 10 20 25 30 40 



Diameter, inches 1 Mo 1% IVa 1% 1% 



Height, inches 1%-. 1% 6 1% 1% 1% 



Each $0.23 .30 .35 .35 .35 



3361. COVERS, Alundum, for No. 3363 Crucibles. 



No B E 



For crucibles, cc 20 40 



Each 30 .35 



3364. CRUCIBLE, Alundum, specially designed for determining moisture in coal. Diameter, 2% inches; 

 height, 1% inches; capacity, 80 cc ! 35 



3366. CRUCIBLES, Alundum Filtering, for ranid filtration; save 75 per cent, of the time usually re- 

 quired. Not affected by solutions of acids or alkalis and can readily be dried to constant 

 weight. Recommended by Spencer for use in sugar analysis. Medium porosity carried in stock. 

 Fine and coarse porosities can be supplied on short notice. 



No A B 



Capacity, ce 25 35 



Diameter, inches '. 1% 1% 



Height, inches 1 l / 2 1 n /i6 



Each 30 .35 



3368. CRUCIBLES, Alundum Melting, highly' refractory, and well adapted to experimental electric 

 furnace work. They are not suited for use where slags are encountered on account of their 

 absorbent nature. Furnished in fine mixtures only, except No. 3368D which is porous. Price 

 of No. 3368C includes cover. 



' No A B C D 



Diameter, inches 1% 2% 2% 3 



Height, inches 2 2% 4% 3% 



Each 75 1.00 2.00 1.25 



3370. CRUCIBLE, Alundum Melting, similar to No. 3368, but of composition especially adapted for 

 work requiring an extremely refractory body. Platinum has been melted in this crucible. 

 Diameter, 1% inches; height, 3 a /4 inches 1.50 



3372. CRUCIBLES, Denver Fire Clay, for assay work ; without covers. 



No A B C D E 



Capacity, grams 5 10 15 20 30 



Height, inches 2% 3 3% 3% 3% 



Diam. at top, inches 2% 2% 2% 3 3% 



Approx. number in original barrel 850 500 400 350 250 



Per dozen 60 .75 .85 .95 1.40 



Per 100 in original barrel 3.40 4.60 5.25 5.75 8.50 



3373. COVERS for No. 3372 V 



Per dozen 45 .45 .45 .65 .75 



Per hundred in original barrel 3.00 3.00 3.00 4.50 - 5.00 



