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



83 



No. 1225. 



No. 1226. 



No. 1234. 



No. 1224. 



No. 1232. 



No. 1230. 



No. 1228. 



1224. CARBON DIOXIDE APPARATUS, Van Slyke, for the determination of carbon dioxide and 



carbonates in blood plasma and other solutions, designed by Dr. Donald D. Van Slyke of the 

 Rockefeller Institute for Medical Research. With this apparatus, a determination requires only 

 a few minutes for completion and may be made with 1 cc or less of blood plasma. With up- 

 per part of pipette graduated to 1 ce in 0.02 cc divisions. Complete on stand with leveling 

 bulb and connecting tube, separatory funnel, two glass pipettes and with directions for use. 



(See Journal of Biological Chemistry, Vol. XXX, No. 2, for June 1917, page 347) $21.00 



1224A. GLASS PARTS only of No. 1224 15.00 



CENTRIFUGES for Blood Testing, see general heading Centrifuges. 



1225. COAGULATORS for Blood Serum, or Inspissators, of copper, double walled, heavily tinned on 



the inside. The outside is covered with insulating material and the top with heavy felt. Sup- 

 ported on four legs, the two in front being adjustable in height for tilting at any desired 

 angle. Complete with water level, drip cock and tubulatures for thermometer and thermo- 

 regulator. 



No A B 



Length inside, inches 12 16 



Width inside, inches 10 8 



Depth inside, inches 2% 2% 



Each 30.00 33.00 



1226. COAGULOMETER, Biffi-Brooks, for the coagulation test of blood. Requires but a few moments 



for the determination, is accurate and readily portable. With thermometer and directions 



for use ! 8.00 



1228. COAGULOMETER, Brodie-Russell-Boggs, for use on the microscope stage for determining the 

 exact time for coagulation of the blood. (See Johns Hopkins Hospital Bulletin for June- 

 July, 1907) 9.50 



1230. COAGULOMETER, Rudolf's, consisting of a pint Thermos bottle, with a three-hole rubber stop- 

 per. Through two holes are brass tubes 7 inches long, in which are inserted thin glass tubes 

 1.5 mm in diameter and about 7 inches long, each containing blood from the same drop. The 

 outer ends of the tubes are sealed with a flame. A thermometer is placed in the third hole of 

 the stopper. Complete with wooden support for Thermos bottle. (See American Journal of 



the Medical Sciences for 1910, Vol. CXL, page 807; 1911, Vol. CXLII, page 481) 9.50 



1232. COLLECTING NEEDLES, Wassermann, for obtaining blood for investigation. With knurled 



finger grip to facilitate insertion Each. .15 



Per dozen 1.50 



1234. COLLECTING TUBES, Keidel's Vacuum, consisting of a 5 cc bulb, drawn out to a capillary tip 

 and sealed after a vacuum has been created by heating, a 25 gage hose-hub needle, a piece 

 of rubber tubing for connecting needle and bulb and a glass tube for protection during steril- 

 ization. Complete as illustrated Each .25 



C 

 16 

 14 



38.00 



