234 



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



ra 

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No. 5264. 



No. 5278. 

 No. 5286. 



No. 5280. 

 No. 5288. 



No. 5282. 



No. 5272. 



5264. EXTRACTION APPARATUS HEATERS, Electric, similar to No. 5262, but with individual hot 

 plates for the different flasks. As each hot plate has its own switch, any one or all may be 

 used at one time, as desired. Length, 24 inches; width, 5% inches; height to top of hot plate, 

 9 inches; diameter of hot plates, 3% inches. With six hot plates. 



No A B 



For volts 110 220 



Each $72.50 72.50 



5270. EXTRACTION APPARATUS HEATER, consisting of rectangular water bath of tinned copper 

 with 6 openings 2% inches in diameter, and with constant water level, on substantial support. 

 Fitted with uprights at ends and adjustable supporting racks for extractors. Length, 23 inches; 

 width, 4% inches; depth, 4 inches; height (not including uprights), 11 inches; height over all, 



31 inches. Without glassware or burner 25.00 



5272. EXTRACTION APPARATUS HEATER, consisting of a circular water bath with six 2% inch 

 openings fitted with concentric rings, and with constant water level, on tripod support stand. A 

 support rod with two adjustable arms is provided, equipped with spring clamps for six ex- 

 tractors. Diameter of water bath, 12 inches; depth, 4% inches; height of top of water bath 

 from table, 10% inches; total length of support rod, 31% inches. Complete with adjustable 



ring burner for illuminating gas 29.50 



HOT PLATES, Electric, for extraction apparatus, see general heading Hot Plates, Electric. 

 FAUCET CONNECTIONS, see Hose Connections. 

 5278. FERMENTATION TUBES, Smith's, on glass foot. 



No A B 



Length of closed tube, mm 115 140 



Diameter of closed tube, mm 12 15 



Each 30 .35 



5280. FERMENTATION TUBES, Smith's, without glass foot. 



No A B 



Length of closed tube, mm 115 140 



Diameter of closed tube, mm 12 15 



Each 20 .25 



5282. FERMENTATION TUBES, same as No. 5280, but without bulb. 



No A B 



Length of closed tube, mm 125 175 



Diameter of closed tube, mm 12 15 



Each... 15 .20 



