140 



CENTEAL SCIENTIFIC CO., CHICAGO, IT. S. A. 



2684. 

 2685. 

 2686. 

 2687. 

 2688. 

 2689. 

 2696. 



No. 2696. 



Two-Place Head only for Goetz tubes or separatory funnels $4.20 



Eight-Tube 50 cc Head only 14-40 



Board of Health Disk, without tubes 14.40 



Bronze Basket, 5 inches in diameter, perforated, with copper drip can 26.40 



Cast Iron Stand for mounting No. 1 Centrifuge 13.20 



Two-Bottle Shaker Head for use on No. 1 Centrifuge 24.00 



CENTRIFUGE, International No. 2, similar in construction to No. 2670, but larger, affording 

 greater capacity and rendering available more varied equipment. The same equipment of heads 

 and tubes may be used and in addition 100 cc tubes swung in the eight-tube head; also a 

 sixteen-tube head carrying 50 cc tubes or Babeock test bottles. In addition a two-place or a 

 four-place head for Squibb 's separatory funnels of about 150 cc capacity may be used. Other 

 combinations will be found in the list of accessories which follows. Equipped with hand brake 

 for bringing quickly to rest, and device for lifting brushes permitting a very gradual decrease 

 in speed in coming to rest. Complete with rheostat for speed control but without head or 

 tubes, with motor for 220 volts alternating current. 

 Specifications : 



Height, cover closed, 28 inches. 



Height, cover open, 40 inches. 



Diameter, 24 inches. 



Shipping weight, about 450 pounds. 



Speed with 16-tube 50 ee head and tubes, 



2000 r. p. m. 

 Eelative force, 954. 

 Average spread, 43 cm. 

 Speed with 8-tube 100 cc head and tubes, 



2200 r. p. m. 

 Relative force, 1077. 

 Average spread, 40 cm. 



Speed with 8-tube 50 cc head and tubes, 



3100 r. p. m. 

 Relative force, 1708. 

 Average spread, 32 cm. 

 Speed with Board of Health Head, 3000 



r. p. m. 



Relative force, 900. 

 Average spread, 18 cm. 

 Speed with 4-tube 250 ce head and tubes, 



2400 r. p. m. 

 Relative force, 1152. 

 Average spread, 36 cm. 



Price 186.00 



2698. CENTRIFUGE, International No. 2, same as No. 2696, but for 220 volts alternating current. 186.00 



2700. CENTRIFUGE, International No. 2, same as No. 2696, but for 110 volts direct current 186.00 



2702. CENTRIFUGE, International No. 2, same as No. 2700, but for 220 volts direct current 186.00 



Accessories for International Centrifuge No. 2, in Addition to those Listed under Centrifuge No. 1. 



2704. Two-Place Head only for Goetz tubes or separatory funnels 7.20 



2705. Four-Place Head only for Goetz tubes or separatory funnels 11.50 



2706. Eight-Tube Combination Head only for 6 small tubes and 2 Goetz tubes or funnels 18.00 



2708. Sixteen-Tube Head only, for 15, 50 or 100 ce tubes, or Babcoek test bottles 22.80 



2709. Bronze Basket, 11 inches in diameter, perforated, with copper drip-can 42.00 



2710. Metal Shield for 100 cc tubes, Cornell style, with rubber cushion 90 



2711. Trunnion Ring for 100 cc tubes 48 



2712. Long Metal Cup for 9 inch Babeock bottles in head No. 2708 only, with rubber cushion 90 



2713. Special Long Metal Cup for 9 inch Babeock bottles in Heads Nos. 2681, 2685, and 2706, with rub- 



ber cushion 1.32 



2714. Metal Shield for 100 ce Oil Tube No. 2717, with rubber cushion 1.50 



2715. Trunnion Ring for Metal Tubes Nos. 2712, 2713, and 2714 48 



2716. Glass Tubes, 100 cc, plain, lipped each .25 



per dozen 2.30 



2717. Glass Oil Tubes, 100 cc, graduated each 3.00 



per dozen 30.00 



