518 



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



Nos. 14326-8. 



PATfAPPLD. FOB 



No. 14332. 



14326. WATER BATH, Wassermann, round form, of copper tin lined, with copper rack for holding 28 

 test tubes 3 x % inches, and with tubulatures for thermometer and thermo-regulator, mounted 

 on sheet iron base, 4 inches high. Diameter, 6 inches; depth, 4 inches. Without heater or 

 thermo-regulator $12.00 



14328. ELECTRIC HEATER AND THERMOSTAT, Combined, for No. 14326. Consisting of a heating 

 disk 5 inches in diameter by % inch in thickness, mounted with an adjustable pencil-type 

 electro-thermostat 6 inches long and % inch in diametor, with a pilot lamp to indicate when 

 the current is on or off. This outfit can be used for heating and regulation in any water bath 

 whose capacity does not exceed 2 quarts with the depth of the water not less than 2 inches. It 

 can be set for any temperature between 35 and 60 C., but the best results are obtained by 

 having it set at the factory for a fixed temperature and not readjusting it. Shipping weight, 

 3 pounds. Complete with 6 feet of flexible cord and an attachment plug for connection to any 

 110 volt lamp socket. Without water bath 25.00 



14332. WATER BATH, Wassermann, DeKhotinsky Electrically Heated and Regulated, for precision 



work in incubation, inactivation, the study of thermal death-points, etc. This bath is a special 

 type of the DeKhotinsky Electrically Heated and Begulated Water Baths No. 14300, of a shape 

 and design adapted especially for bacteriological and clinical work. It will accommodate special 

 supports for 48 Wassermann tubes, and trays for 18 Vaccine tubes. It is of the same construc- 

 tion as No. 14300, and is provided with the same system of heating and regulation, for control 

 of temperature to 1/10 C. In order to secure this degree of precision, Stirrer No. 12864A 

 must be included in the equipment. Diameter of the bath, 10 inches; available height, 8 inches. 

 Complete with four standard heating units, mercury thermo-regulator, sensitive iron-clad re- 

 lay, constant water level device, three-point switch, three support rods for clamping devices in 

 the bath, and five feet of cord and attachment plug, but without stirrer, test tube supports, or 

 cooling coil. 



No A B C D 



A. C. D. C. 



For volts 110 220 110 220 



Each 75.00 77.50 72.50 75.00 



14333. COOLING COIL, for use with No. 14332 when it is necessary to maintain the temperature within 



2 degrees of room temperature or lower 8.00 



HEATING UNITS, extra, for No. 14332, 115 watts each. 



No 7526D 7527D 



For volts 110 220 



Each 1.00 1.25 



12864A. STIRRER, High Speed Turbine, for use with No. 14332 in order to hold the temperature constant 

 to 1/10 degree C. It clamps on one of the support rods, and has two pulleys at the top, one for 

 belting to a motor, the other for operating a stirring rod in flasks or other vessels in the bath. 

 Capacity, 5 liters per minute; power required to operate, ^g h- P ^.00 



