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



277 



6590. MODIFIED OR SAT GAS ANALYSIS APPARATUS, Portable Form, for analyzing mine gases 



to an accuracy of 0.2 per cent. The absorption pipettes are filled with glass rods. Complete 

 as shown in polished wooden carrying case. (See Bulletin 42, figure 16, page 39) .... $42.50 



6591. GLASS PARTS only for Xo. 6590 25.00 



6594. APPARATUS TOR 'THE ANALYSIS OP GAS MIXTURES, CONTAINING CO,, C,H 4 , O^ CO, 



H.,, CH 4 , CoILj, and N 2 . Laboratory Form. Complete with 7 pipettes including slow combus- 

 tion pipette, water-jacketed measuring burette, compensating device, manifold tube with four 

 stop-cocks, and leveling bulb, mounted in wooden case with iron supports. (See Bulletin 42, 

 figure 17, page 43) 85.00 



6595. GLASS PARTS only for No. 6594 55.00 



6598. APPARATUS FOR THE DETERMINATION OF HYDROGEN, Laboratory Form, by means of 



copper oxide or palladium asbestos. Complete with water-jacketed burette, compensating de- 

 vice, leveling bulb, palladium asbestos tube, two absorption pipettes, manifold with three 

 stop-cocks, and iron supports, but without heater for the palladium asbestos tube. (See Bul- 

 letin 42. figure 18, page 54) 40.00 



6599. GLASS PARTS only for Xo. 6598 . . . 30.00 



6602. APPARATUS FOR ANALYZING NATURAL GAS, Laboratory Form, complete as shown, with 



iron supports. (See Bulletin 42. figure 23. page 78) 50.00 



6603. GLASS PARTS onlv for No. 6602 35.00 



