238 



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



No. 5360. 



No. 5362. 



No. 5368. 



No. 5366. 



No. 5380. 



5360. FILTER CONE, Best American Porcelain, glazed throughout except rim, with holes about 1 mm 

 in diameter. 



No 3 4 



Diameter, mm 50 63 



Length of side, mm 43 58 



Each $0.90 1.10 



5362. FILTER CYLINDER, Best American Porcelain, unglazed, with flange, for filtering solutions by 

 means of a filter flask. Length, 115 mm; diameter inside, 16 mm; diameter outside, 20 mm; 



diameter of flange, 50 mm 80 



5366. FILTER DISKS, Perforated, Best American Porcelain, with beveled edge. 



Diameter, mm 25 38 50 



Each 20 .30 .38 



5368. FILTER DISHES, Alundum, to fit the top of a glass funnel for rapidly filtering large amounts 



of material. Especially adapted for organic work. Filters thoroughly, quickly and without 

 previous preparation. Medium porosity caried in stock. Fine and coarse porosities can be 

 supplied on short notice. 



No A B C 



Diameter, inches 5% 4 2% 



Depth, inches 2 2 1 



Capacity, cc 400 300 50 



Each 1.50 1.00 .40 



5369. RUBBER GASKET, molded shape, for No. 5368A, 400 ec 50 



FILTER FLASKS, see No. 5664. 



FILTER PAPER 



5380. FILTER PAPER for qualitative work. A pure white paper of superior quality, strong and 



rapid. Cut in round filters, 100 in a package. 



Diameter, cm 7.5 10 11 12.5 15 20 25 33 40 45 50 



Per package of 100 sheets. .18 .21 .23 .27 .35 .55 .88 1.26 1.48 1.85 2.20 



5381. FILTER PAPER, same quality as No. 5380, in sheets 20x20 inches. 



Per quire 80 



Per ream 12.20 



5398. FILTER PAPER, J. Green for Agar Agar, similar to Chardin. The filters are folded and packed 

 in boxes. 



Diameter, cm 34 50 



Number in box. ' 30 25 



Per box 3.25 3.25 



5400. FILTER PAPER, J. Green No. 588 (S. & S. No. 588), Folded, excellent quality, free from 

 chlorine, folded in such a way as to protect the points from tearing. In boxes of 100 filters. 



Diameter, cm 12.5 15 18.5 24 



Per box of 100 1.00 1.20 1.50 2.00 



