ALPHABETICAL LIST OF ADVERTISERS Springer-Verlag Standard Scientific Supply Corp Firestone Advertising Agency, Inc. C. H. Stoelting Co Mandabach and Simms, Inc.
48 116
24 Advertising, 30
Variait Associates 16:50:51:80:105 Hoefer, Dieterich & Brown, Inc. The Victoreen Instrument Co 87 Palm & Patterson, Inc.
The Welch Scientific Co Armstrong Advertising Agency, Inc. The Welch Scientific Co H. A. Hooker Advertising Agency, Inc. Weston Instruments G. M. Basford Co. Whitey Research Tool Co Falls Advertising Co. Wild-Heerbrugg Instruments, Inc Dun can-Brooks, Inc. Wilkens-Anderson Co Mandabach & Simms, Inc.
Carl Zeiss, Inc G. M. Basford Co.
Laboratory Supply Center Bronwill Scientific, Div. of Will Inc. Clark Microanalytical Laboratory Dimco-Gray Co. Eastern Chemical Corp. George W. Gates Co. General Atomic Div. o:: General Dynamics Corp. Jarrell-Ash Co. Laboratory Devices LaMotte Chemical Products Co. Macalaster Scientific Corp. NM'R Specialties, Inc. Oxford Laboratories Penn-Chem Corp. Perkin-Elmer Corp.
Los Angeles 5 . . . George Ε. Η all em an, Jr., McDonald-Thompson, Inc., 3727 W. 6th St., 213-387-5391
REINHOLD PUBLISHING
Seattle 4 . . . T. H. Abney, McDonaldThompson, Inc., 1008 Western Ave., 206-623-3766
92
W. A. Taylor & Co 94 Emery Advertising Corp. Technical Measurement Corp 90 Culver Advertising Agency, Inc. Technicon Controls, Inc 23 Mediad, Inc. Texas Instruments, Inc 35 Robinson-Gerrard-McGary, Inc. Texas Nuclear Corporation Subsidiary of Nuclear Chicago Corp 72 Sidney Clayton & Associates Thermolyne Corp 78 Howard H. Monk & Associates, Inc. Thermovac Industries Corp 56 M. B. Brucker Co., Inc. Arthur H. Thomas Co 98:98C Torsion Balance Co 19 Michel-Cather, Inc. Ultra Carbon Corp Church and Guisewite Inc. U. S. Stoneware Co Ralph Gross, Inc.
Petroleum Analytical Research Co. Ivan Sorvall, Inc. Valentine Instrument Co.
104 65 108
CORPORATION
Advertising Management for the American Chemical Society Publications 430 Park Ave., New York 22, Ν. Υ. Cable
Address:
REINPUB
Portland 1 . . . Francis M. Eaton, McDonaldThompson, Inc., 2035 S.W. 58th Avenue, 503-222-1546
NYK Denver 3 . . . Robert H. Heidersbach, Mel G. Carlson, McDonald-Thompson, Inc., 840 Lincoln St., 303-825-3325
SALES REPRESENTATIVES Thomas N. J. Koerwer, Advertising Manager
Sales
New York 22 . . . Sam W. Percy, J. Barry Stanford, Clay S. Holden, Reinhold Publishing Corp., 430 Park Ave., 212688-8600 Chicago 2 . . . Eugene P. Eldridge, Reinhold Publishing Corp., I l l W. Washing ton St., 312-726-8497
Houston 6 . . . Frank I. Vickrey, McDonaldThompson, Inc., 3217 Montrose Blvd., 713-529-6711 Dallas 19 . . . C. Parker Harris, McDonaldThompson, Inc., 2727 Oak Lawn Ave., 214-521.1266 Tulsa 14 . . . Max C. Nelson, McDonaldThompson, Inc., 2570 South Harvard, 918-742-9961
Cleveland 14 . . . Rodney D. Long (Cleve land Manager, Reinhold Publishing Corp.), East-Ohio Bldg., 1717 East 9th St., 216-771-4011
Great Britain and Western Europe . . . Brayton Nichols, The American Magazine Group, 44 Conduit Street, London W. 1, England
San Francisco 5 . . . Morton McDonald, Mc Donald-Thompson, Inc., 625 Market St., 415-297-5377
Japan . . • Genzo Uchida, Bancho Koheki Co., Ltd., 5-5 Hayabusa-cho, Chiyoda-ku, Tokyo, Japan
NESTER SPINNING BAND DISTILLATION COLUMNS
21 47 83
An improved type for use under high vacuum . . . developed to meet the need for a labora tory still superior to conventional types in the fractionation of heat-sensitive or high-boiling, high viscosity liquids.
73
124-125 Scientific,
The columns contain spiral screen bands having 300 teeth per inch contacting the walls of the still. This construction provides violent agita tion of the reflux liquid and gives intimate contact of descending and ascending vapors. The reflux ratio of the still is controlled by means of an adjustable needle valve eliminat ing the possibility of leakage. • high fractionating
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for purchase or more information,
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2401 OGLETOWN RD. NEWARK, DELAWARE
Circle No. 127 on Readers' Service Card
VOL. 35, NO. 8, JULY 1963
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