128 



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



No. 2394. 



2394. CALORIMETER, Parr Adiabatic Oxygen Bomb. An entirely new adiabatic system is employed 



which insures a degree of accuracy not possible with pneumatic or vacuum methods. Water is 

 kept circulating constantly throughout the cover and on all sides of the jacket, the tempera- 

 ture of which is under the positive control of the operator. By turning the proper valve, 

 either cooler or warmer water is instantly admitted and immediately distributed throughout" 

 the jacket permitting the operator to keep the temperature controlled in either direction to 

 correspond absolutely with that in the calorimeter proper. This is a feature not found in any 

 other commercial calorimeter. By this means errors due to radiation or to conductivity lag are 

 eliminated and the use of calculations made unnecessary. The cover is pivoted so that it 

 swings out of the way in a horizontal plane, carrying the thermometer with it, thus reducing 

 the danger of breakage to a minimum. The water container and bomb are the same as those 

 employed in the Oxygen Bomb Calorimeter No. 2382. Complete with water container, Illium 

 bomb, adiabatic water jacket, rotary stirrers, pressure gage and needle valve with oxygen con- 

 nection and couplings, octagon socket for bomb, spanner wrench, six capsules of special alloy, 

 reading lens and support, special ignition wire and gaskets, but without thermometer, motor, 

 heater, or heater burner $375.00 



Parts and Accessories for Parr Adiabatic Oxygen Bomb Calorimeter. 



2395. HEATER for water supply system 25.00 



2397. HEATER BURNER 1.00 



2398. ELECTRIC MOTOR, variable speed, for 110 volts A. C. or D. C 28.00 



2399. ELECTRIC MOTOR, variable speed, for 220 volts A. C. or D. C 28.00 



For other parts, see those listed under Parr Oxygen Bomb Calorimeter No. 2382. 



Note: If desired by those who are accustomed to using only platinum lined bombs, we shall be 

 glad to quote prices on a special platinum lined Illium bomb. The advantages of this over the 

 usual platinum lined steel bomb are obvious. 



2400. PELLET PRESS and Mold, complete, for preparing fuel pellets for calorimetric determinations 



20.00 



OXYGEN CYLINDERS for use with Oxygen Bomb Calorimeter, see Gas, Oxygen. 

 CALORIMETERS, Gas, see Gas Analysis Apparatus. 

 CANS, Sample, see Boxes. 



