SCIENCE- ADVERTISEMENTS 



Sargent's Electric 

 Water Bath 



With 



Constant Temperature Control 



MANUFACTURED IN PART UNDER PATENT 1083592 



The demand for a water bath electrically heated and provided with a constant tempera- 

 ture control that is sufficiently sensitive for the general laboratory has caused us to design and 

 manufacture the illustrated apparatus. 



The range of constancy in the temperature of this water bath is i°C. 



While this degree of accuracy is not sufficient for the most exacting research work such 

 as experiments in electric conductivity it is well within the margin of variation required by 

 the general analytical chemist. 



It is especially useful in digestion work where a constancy of selected temperature is 

 desired up to the boiling point of water. 



It is also a most desirable apparatus for evaporating at low constant temperatures as in 

 potash determinations in fertilizer laboratories or where there is danger of breaking up a 

 residue from over heating. 



The regulator may be set to produce and maintain any temperature — between a few 

 degrees above room temperature and the boiling point of water. 



Dishes, round or flat bottom flasks or acetylization flasks may all be used with this 

 apparatus. A support is provided to hold condensers, thermometers, etc. 



The area of the bath is i.^ x i,^ inches and the top is provided with four holes each 5 

 inches in diameter and provided with concentric rings. 



Made for stock for no volt and 320 volt currents and may be used on either alternating 

 or direct current. 



It is provided with an attachment for maintaining a constant water level in the bath and 

 with cord and plug for attaching to the electric line and full directions for operation. 



Price complete without glass or porcelain ware $85.00 



DESCRIPTIVE CIRCULAR UPON REQUEST 



E. H. SARGENT & €0. 



Importers, Makers and Dealers in Chemicals 

 and Chemical Apparatus of High Grade Only 



155-165 East Superior Street 



EST.-VBLISHED 1S52 



CHICAGO, ILL. 



-SEVENTY YEARS IN BUSINESS 



