276 



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



No. 6570. 



No. 6574. 



No. 6578. 



No. 6582. 



GAS ANALYSIS APPARATUS 



GAS ANALYSIS APPARATUS, as developed by the United States Bureau of Mines and used by 

 them in the examination and precise analysis of mine air, flue and furnace gases, natural gas, and 

 exhaust gases from gas -engines. (See Bulletins 42, 74 and 97, and Technical Papers 13, 14, 31 and 87 

 of the United States Bureau of Mines.) 



6570. APPARATUS FOR THE EXACT ANALYSIS OF MINE AIR, Laboratory Form. Complete 



with glass parts mounted as shown, with iron supports. (See Bulletin 42, of the United States 

 Bureau of Mines, figure 7, page 17) $40.00 



6571. GLASS PARTS only for No. 6570 25.00 



6574. APPARATUS FOR THE EXACT DETERMINATION OF METHANE, Laboratory Form. With 



this apparatus an analysis may be made in 10 minutes with an accuracy of 0.01 to 0.02 per cent. 

 Complete with water-jacketed measuring burette, temperature compensating device, slow 

 combustion pipette, manifold with two stop-cocks, manometer and leveling bulb, mounted as 

 shown with iron supports, but without beaker or sampling tube. (See Bulletin 42, figure 11, 

 page 31.) 38.00 



6575. GLASS PARTS only for No. 6574 20.00 



6578. APPARATUS FOR THE DETERMINATION OF METHANE IN MINE AIR, Portable Form. 



Determinations may be made with an accuracy of 0.1 per cent. Complete as shown with 

 glass parts mounted in polished wooden carrying case with sliding doors. (See Bulletin 42, 

 figure 13, page 34) 27.50 



6579. GLASS PARTS only for No. 6578 9.00 



6582. APPARATUS FOR THE DETERMINATION OF CARBON DIOXIDE AND METHANE, Port- 



able Form, similar to No. 6578, but with the addition of an absorption pipette for carbon 

 dioxide. Complete as shown, in polished wooden carrying case, with sliding doors. (See 

 Bulletin 42, figure 14, page 36) 29.00 



6583. GLASS PARTS only for No. 6582 10.00 



6586. APPARATUS FOR THE EXACT DETERMINATION OF CARBON DIOXIDE AND ME- 



THANE, Laboratory Form. With this apparatus an analysis can be made in 15 minutes with 

 an accuracy of 0.01 per cent. Complete as shown with iron supports. (See Bulletin 42, fig- 

 ure 15, page 38) 35.00 



(For illustration of No. 6586, see page 277.) 



6587. GLASS PARTS only for No. 6586 21.00 



