370 



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



Nos. 9484-6. 



Nos. 9476-8. 



No. 9490. 



9476. KJELDAHL DISTILLING- APPARATUS, wall form. All working parts of the apparatus are 

 readily accessible from the front. The burners are provided with stop-cocks for individual 

 regulation so that any or all of the burners may be used at once. The condenser tank is 

 of heavy copper with block tin condenser tubes. With 6 burners but without glassware $55.00 



9478. KJELDAHL DISTILLING APPARATUS, same as No. 9476, but with burners for gasoline 

 gas 60.00 



9480. KJELDAHL DISTILLING APPARATUS, same as No. 9476, but with supports to stand on the 

 table. With 6 burners ; 60.00 



9484. KJELDAHL DIGESTION SHELVES. Johnson's, consisting of a shelf of iron about 6 inches 



wide and 8% inches high, with holes 4% inches from center to center. The necks of the 

 flasks rest in holes in a large lead tube to be connected with a chimney so that all fumes 

 are carried away. Complete with Bunsen burners, with stop-cocks with separate key, but 

 without flasks, lead pipe, or support for pipe. 



No A B C 



Number of burners . 6 10 13 



Approximate length, inches 30 50 65 



Each 22.50 27.50 32.50 



6268. EXTRA STOP-COCK KEY for No. 9484 1.00 



9485. LEAD TUBING for use with No. 9484, inside diameter, 4 inches per foot 1.00 



9486. LEAD TUBES for No. 9484, inside diameter 4 inches, complete with holes for necks of flasks. 



and with support. With outlet tube 12 inches long, located in middle of long tube, unless 

 specified otherwise in ordering. 



No A B C 



Number of holes 6 10 13 



Each 15.00 18.00 20.00 



9490. KJELDAHL DIGESTION APPARATUS, Sy's Fumeless, permitting digestions to be made 

 without the use of a hood, provided a water supply and drain are available. The glass fil- 

 ter pump effectually disposes of the fumes as they are generated. Complete with support 

 stand, clamps, quadruple burner, filter pump, four bulb tubes and four 500 cc Kjeldahl flasks 

 of Pyrex glass. (See Journal of Industrial and Engineering Chemistry, Vol. IV No. 9, for 

 September 1912) 18-00 



