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



307 



Nos. 7526-7. 



Nos. 7524-5. 



Nos. 7536-40. 



HEATERS, Electric Immersion, DeKhotinsky, for use in water baths, incubators, etc., consist- 

 ing of two units, contained in non-corrosive metal tubes, connected in parallel. Unless speci- 

 fied in ordering, 230 watt heater containing two 115 watt units will be sent. Selection may 

 be made from the list of units given under Nos. 7526 and 7527. 



No A B C D 



Length of heater tubes, inches 8 12 18 24 



For 110 volts $12.00 12.50 13.00 13.50 



For 220 volts 13.00 13.50 14.00 14.50 



7524. 

 7525. 



7526. 

 7527. 

 7528. 



7536. 



7538. 

 7540. 

 7542. 



UNITS, DeKhotinsky Standard Heating, for use in Nos. 7524 and 7525 Electric Heaters, of 

 Chromel wire wound on lavite. They can be easily installed, requiring only a screw driver 

 for removal and insertion. 



No A B C D E 



Wattage 44 60 75 115 140 



For 110 volts 1.00 1.00 1.00 1.00 1.00 



For 220 volts 1.25 1.25 1.25 1.25 1.25 



HEATER, Despatch Flexible Electric, very convenient for use in the laboratory as its flexibil- 

 ity permits it to be wrapped about a bottle, beaker or other object to be heated. Thoroughly 

 insulated and safe to handle. Length unrolled, 16 inches; width, 3% inches; thickness, % 

 inch ; current consumption, 300 watts. For 110 volts only 7.00 



HEATERS, Flask, sheet iron, see Flask Heaters. 



HEATER, Instantaneous Water. Gives hot water in three seconds after the gas is lighted, and 

 in one minute will give sufficient hot water for washing hands. Total height, 9 inches; gas 

 supply required, % inch clear bore pipe and tap; maximum gas consumption 60 cubic feet per 

 hour. Illustration shows the heater on No. 2082 Burner. Heater complete, without burner 7.00 



HEATER, Instantaneous Water, same as No. 7536, but with Burner No. 2082 for illuminating 

 gas 9.00 



HEATER, Instantaneous Water, same as No. 7536, but with Burner No. 2084 for gasoline 

 gas 10.40 



HEATER, Instantaneous Water, specially designed for lavatory, general laboratory and domestic 

 use; it will heat one pint of water per minute from 50F. to 130F. or will boil 4 gallons per 

 hour. A pilot light attachment keeps the water in the coil constantly warm when the water 

 is not running and automatically lights the burner when the gas is turned on. Height over 



