SCIENCE-ADVERTISEMENTS 



Serological Water Bath of Precision 



Electrically heated and temperature controlled serological water baths capable of 

 operating at 3 7.5 degrees Centigrade or 56 degrees Centigrade, either temperature may 

 be obtained by a simple turn of the indicative snap switch. The Wassermann test and 

 inactivating work may be accomplished in the same bath. An Immersion electric heater 

 which is entirely surrounded by water and extends the full length of the bath is used. 

 The thermostats are the multiple contact type, capable of repeated heating and cooling 

 without changing the adjustment. Should other working temperatures be desired the 

 adjustment screw on the thermostat permits the temperature to be readily changed. Baths 

 may be had from stock in the following sizes: 



I2!/2 

 l2!/2 



X 6 

 X 6 



PORCELAIN BATHS 



5 in. Double temperature, Price $55.00 



5 in. Single temperature. Price 50.00 



-CO. 



San Francisco, Calif. 



Founded 1852 



584 Mission Street 



LABORATORY SUPPLIES 



Apparatus Chemicals 



Scientific Instruments 



"We know how to pack for export" 

 Inventors — Manufacturers — Exporters — Distributors 



Cable Address, "BRAUNDRUG" Los Angeles House 



All Codes used. The Braun Corporation 



