Wassermaim Bath 



Electrically Heated 

 Automatically Controlled 



ERMOSTAT 



PILOT 

 HEATING I 



Fulfills the demand for a small and conveniently arranged bath which will 

 maintaui a constant temperature. Used for serological work, for holding agar 

 tubes above the solidifying temperature, for standardizing disinfectants, etc. 



The bath is constructed of heavy copper on the inside and jj." transite on the 

 outside, with a space between which is filled with animal hair. This insulation 

 enables a constant temperature to be maintained in the bath regardless of the 

 variations in the room temperature. 



The special units heating the bath are placed in copper tubes near the bottom 

 of the water and can be very easily replaced. The temperature is controlled by 

 the latest type of electro-thermo regulator placed in a copper tube near these 

 heating units. 



The racks are constructed of heavy copper nicely finished. They have adjust- 

 able supports which make it possible to immerse them to any desired depth in the 

 bath. The}^ also have convenient handles. 



No. 51 Wassermann Bath (80 test tubes capacity), complete with 2 racks, 



cord and connecting phig $50.00 



No. 54 Wassermann Bath (40 test tube capacity), complete with one rack, 



cord and connecting plug $37.50 



No. 55 Additional Racks for Wassermann Bath. These can be supplied, if 



desired, at $5.00 Each 



Scientific Materials Company 



PITTSBURGH, PA. 



Everything for the Laboratory 



