126 



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



No. 2360. 



No. 2376. 



CALORIMETERS 



No. 2378. 



2360. 



CALORIMETER, Parr Standard, for determining the heat units in coal, coke, lignite and oils. 

 The most rapid and convenient apparatus for measuring the calorific power of fuels. Requires 

 no special skill in manipulation and no complicated connections to oxygen tanks, etc. Outfit 

 is readily portable, being self-contained. Bequires power to operate stirrer, which can be fur- 

 nished by water motor or electric motor. Determinations can be quickly made, requiring not 

 more than 20 minutes to complete a test on a prepared sample. The bomb or combustion cup 

 furnished! is made of a special alloy which resists the action of the melted sodium peroxide, 

 and can be used continuously. An arrangement is made whereby the water is not admitted to 

 contact with the. bomb until the fusion is completed, thus insuring the complete combustion of 

 the sample. A further advantage of this calorimeter is the fact that sulphur and total carbon 

 may be easily determined from the fused product of the combustion by the Sulphur Photometer 

 (see No. 2378), and the Total Carbon Apparatus (see No. 2376). Two interchangeable fusion 

 cups are furnished enabling duplicate determinations to be made. Complete with thermometer 

 reading from 65 to 90F. in 1/20 divisions with Bureau of Standards certificate, reading lens 

 with support, two-liter measuring flask, chemical receptacle, measuring cup, 100-mesh 5 inch 

 brass sieve with bottom, forceps, camel hair brush, ignition wire, chemicals sufficient for fifty 



determinations and battery for ignition, but without motor $85.00 



Accessories and Parts for Parr Standard Calorimeter. 



2361. ELECTRIC MOTOR, variable speed, for 110 volts A. C. or D. C. mounted on support 23.00 



2362. ELECTRIC MOTOR, variable speed, for 220 volts A. C. or D. C. mounted on support 23.00 



2363. WATER MOTOR and Support 5.00 



13533 A. THERMOMETER, 65 to 90 F., in i, divisions, with Bureau of Standards certificate. . . 12.00 

 13533B. THERMOMETER, 65. to 105 P., in i divisions, with Bureau of Standards certificate . . . 15.00 



2366. ADJUSTABLE RHEOSTATS, for use with lighting circuit in place of battery to reduce voltage 



to safe limit for ignition. 



No ; A B 



For volts 110 220 



Total resistance, ohms 50 90 



Each ;... 7.50 8.50 



2367. IGNITION WIRE for electric ignition per card .75 



2368. BOMB for Electric Ignition, complete with wrenches 35.00 



13730. READING LENS, with support 3.00 



13731. READING LENS only, without support 2.00 



2371. SODIUM PEROXIDE, a special quality put up for use with the Parr Calorimeter, in metal con- 



tainer. 



Size, pounds % % 1 



Each 1.10 1.95 3.00 



2372. ACCELERATOR per 2 ounce bottle 1.00 



2373. GASKETS for bomb per dozen .40 



2376. TOTAL CARBON APPARATUS, Parr, for total carbon in coal, coke, etc., in connection with the 



Parr Standard Calorimeter. By adding acid to the dissolved residue from the combustion, 

 which appears as sodium carbonate, carbon dioxide is liberated and measured under proper 

 conditions. Complete with full directions for use 52.00 



2378. SULPHUR PHOTOMETER, Parr, for use in connection with the Parr Standard Calorimeter, 



for readily indicating the percentage of sulphur in coal, coke, and petroleum. The fused mass 

 obtained from the calorimeter bomb is dissolved in water and the sulphur precipitated by 

 means of barium chloride. From the depth of the liquid in the graduated tube at which the 

 light from the flame disappears, a reading is obtained directly which indicates the percentage 

 of sulphur in the sample ". 40.00 



2379. BARIUM OXALATE for use with No. 2378 per 2 ounce bottle .75 



