CENTBAL SCIENTIFIC CO., CHICAGO, U. 8. A. 



519 



No. 13172. 



No. 13174. 



No. 14340. 



No. 14336. 



No. 14337. 



13172. SUPPORT for use with Xo. 14332, for 18 Vaccine tubes *5.00 



13174. SUPPORT for use with Xo. 14332, for 48 Wassermann tubes 4.50 



14336. WATER BATH, Wasserman, Schultz, Electrically Heated and Regulated, for routine work not 



requiring such close regulation as is obtained with Xo. 14332. The bath is made of heavy cop- 

 per, tinned on the inside, and covered on the outside with thick insulating material. The heat- 

 ing units are wound on lavito cores, and are placed in metal tubes at the bottom of the bath, 

 these tubes being entirely surrounded by water. Provisions are made, so that the units can be 

 easily replaced in case of accidental injury. A snap switch is provided, which controls one- 

 half of the heating units, the others being permanently connected in the circuit. The bath may 

 be used at a temperature of 56 C. as an inactivating bath, or at 37.5 C. for incubation pur- 

 poses. Begulation of the temperature is effected by a removable Pencil Type Bimetallic 

 Thermostat, placed in a metal tube at the bottom of the bath near the heating units. A pilot 

 lamp is furnished for indicating when the current is on or off. For 110 volts A. C. or D. C. 

 Complete with test tube racks, thermometsr, 3x% inch test tubes, and 7 feet of connecting 

 cord and attachment plug. 



Xo A B 



Dimensions, inches 9x4^x5 9x9x5 



Xumber of racks 1 2 



Capacity, tubes 48 96 



Current consumption, amperes '..... 1% 2 



Each 42.50 55.00 



In ordering, kindly specify whether the thermostat should be set for 37.5 or 56 C. 



14337. TEST TUBE RACK only of Xo. 14336, holding 48 3x% inch test tubes. Made from nickel- 



plated brass with adjustable supports for suspension in bath, and furnished with three shelves 

 as shown in illustration. Dimensions of rack: 8%x3%x2% inches high. Height O"er all, 

 8 inches. Without test tubes 5.50 



14340. WATER BATH, Whipple's, for melting gelatine. Of heavy copper, tinned inside, with rack to 

 hold 48 test tubes up to % inch in diameter. An incandescent lamp may be used to heat the 

 bath to the required temperature. Diameter of bath, 12 inches; depth, 5 inches. Without lamp, 

 lamp socket or cord 17.50 



