A. DAIGGER & COMPANY, CHICAGO, U. S. A. 



The method of holding 

 the bomb in place for screw- 

 ing on the cap and admitting 

 the oxygen supply is simple 

 and exceedingly convenient. 

 The accessories for this part 

 of the operation are shown 

 in figure above. 



2181 



2181 CALORIMETER Parr's, Oxygen Bomb Calorimeter with "Illium" Bomb. 



Not the lease among the achievements in the construction of oxygen bombs 

 of the Mahler-Atwater type is the doing away with the porcelain or platinum 

 lining as a result of the development of an alloy which is proof against the 

 solvent action of the acids generated in connection with the combustions. 



The first successful bomb made of this metal has been in service for a 

 number of years and has been used in upwards of 2,000 calorimetric determina- 

 tions without giving any evidence of corrosion. Many of the determinations 

 were made parallel with a platinum-lined instrument, and throughout the series 

 there was every evidence of an exact equivalent in the behavior of the alloy 

 (Illium) bomb. 



The calorimeter complete with bomb, water container, insulating vessel with 

 cover, stirrer and pulley, oxygen connection with gauge, needle valve and 

 couplings, octagon holder for bomb, with spanner wrench, one-half dozen cap- 

 sules of special alloy, reading lens and support, special ignition wire and gaskets. 



Without motor or thermometers $285.00 



ACCESSORIES: 



Bomb only $210.00 



Water Container 12.00 



Insulating Vessel with cover, stirrer and pulley 50.00 



Oxygen Connection with gauge, needle valve and couplings 27.50 



Octagon Holder for Bomb, with spanner wrench 12.00 



Electric Motor with variable speed direct or alternating 25.00 



Capsules (special alloy), Illium Metal, each 3.00 



Thermometer graduated in 1/20 F. with U. S. Bureau of Standards cer- 

 tificate , 15.00 



Reading Lens and support 3.00 



Ring Support for holding Calorimeter cover with thermometer 2.75 



Special Ignition Wire, per card 75 



Large Gaskets for Bomb, per dozen 1.00 



Small Gaskets for Valve, per dozen l.OO 



Small Gaskets for Union, per dozen .50 



Extras : 



Beckman's Differential Thermometer graduated to 1/100 C, with certifi- 

 cate of standardization 25.00 



Oxygen cylinder with 100 cubic feet of oxygen, cylinder returnable 35.00 



Ring Support for holding bomb cap while adjusting fuse wire, fuel cap- 

 sule, etc 3.00 



