V O L U M E 2 0, N O . 9, S E P T E M B E R
1948
5A
This "ACCEPTED" PRECISE FRACTIONATION ASSEMBLY IS THE MOST WIDELY USED A N D MOST VERSATILE APPARATUS FOR PRECISE LABORATORY FRACTIONATIONS USED BY T H E NATIONAL BUREAU OF STANDARDS UNITED STATES PATENT NO. 2,387,479
FEATURES
Partial List of Users Atlas Powder Company, Wilmington, Del. American Cyanamid Co., Bound Brook, N. J. Bakélite Corporation, Bound Brook, N. J. Carnegie Inst, of Technology, Pittsburgh, Pa. California Inst, of Tech., Pasadena, Cal. Dow Chemical Company, Freeport, Texas E. I. duPont de Nemours & Co., Buffalo, Ν. Υ. General Electric Company, Pittsfield, Mass. Houdry Process Corporation, Marcus Hook, Pa. Monsanto Chemical Company, Texas City, Tex. Merck & Company, Rahway, N. J. National Bureau of Standards, Wash., D. C. Navy Department, Navy Yard, Ν. Y. Oklahoma A. & M. College, Stillwater, Okla. Standard Oil Development Co., Elizabeth, N. J. Shell Oil Company, Wood River, Mo. Solvay Process Company, Hopewell, Va. IT. S. Army, Aberdeen Proving Ground, Md. U. S. Naval Ord. Test Station, Inyokern, Cal. U. S. Army Medical Center, Washington, D. C. U. S. Bureau of Mines, Pittsburgh, Pa. Union Carbide & Carbon Corp., Wyandotte, Mich. University, Cornell, Ithaca, Ν. Υ. University of Michigan, Ann Arbor, Mich. National Research Council, Ottawa, Canada Skanska Attikfabriken, A. B. Perstorp, Sweden
1.
Fractionation efficiency up to 50 theoretical plates.
2.
Fractionation charges from 2 cc. to 5000 c c , inclusive.
3.
Range from room temperature up to 360CC (630°F.).
4.
New device for precise adiabatic temperature control.
5.
Either atmospheric or vacuum fractionations.
6.
Three sizes of interchangeable fractionation columns.
7.
Rapid fractionation with complete visibility.
8.
Easily operated with a m i n i m u m of experience.
9.
Quickly assembled or dismantled.
10.
Standardization of all parts.
11.
Low cost.
This PRECISE FRACTIONATION ASSEMBLY is the result of α comprehensive and critical study of practically all significant reports on methods and apparatus for precise laboratory fractionations which were published in the United States, British, French and German scientific literature. In addition, the methods and apparatus surveyed have been subjected to exhaustive experimental tests in our laboratories. These tests have shown the need for a versatile and efficient fractionation apparatus of more practical design to meet the varied fractionation requirements arising in chemical laboratories. To meet this need, a new, truly versatile, and highly efficient laboratory fractionation column assembly was developed with several practical features for complete fractionation of many types of organic liquid mixtures.
FREE
Literature on:—
New Laboratory Devices,
Apparatus, and Equipment
AND MANY OTHERS
TODD SCIENTIFIC CO. SPRINGFIELD, PA.
TODD SCIENTIFIC COMPANY Springfield, Pa. Gentlemen: Please place my name on your mailing list to receive the free 24 page bulletin describing the above PRECISE FRACTIONATION ASSEMBLY, and also future announcements of other new and useful equipment for my laboratory. Name Title Company Street City
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