INDEX TO ADVERTISERS IN THIS ISSUE Radiation Instrument Development Lab oratory, A Division of Nuclear-Chi cago Corp , Sidney Clayton & Associates Radio Corp. of America Al Paul Lefton Co., Inc. Research Specialties Co Hoefer, Dieterich & Brown, Inc. Rhoades Rubber Corp Charles E. Vautrain Associates, Inc.
8-9 102 16 90
Sadtler Research Laboratories, I n c . . . . 65 The Roland G.E. Ullman Organiza tion, Inc. Ε. Η. Sargent & Co 76:123 Fulton, Morrissey Co. Carl Schleicher & Schuell Co 34 Wildrick & Miller, Inc. Scientific Glass Apparatus Co., I n c . . . . 81 Scientific Industries, Inc 132:141 Dan Jaffe Advertising, Inc. Sep-Ko Chemicals, Inc 136 Faber Advertising, Inc. Sigmamotor, Inc 80 Gelia and Wells, Inc. Ivan Sorvall, Inc 84 Arthur B. W. Toft William Hill Field Advertising W_. A. Taylor & Co 130 Emery Advertising Corp. Techne (Princeton), Ltd 147 Technical Measurement Corp 97 Culver Advertising, lac. Technicon Controls, Inc 25 Mediad, Inc. Tçch-Systems, Inc 18 Zam & Kirshner, Inc. Texas Nuclear Corp., Subsidiary of Nuclear-Chicago Corp 61:73 Sidney Clayton & Associates Thermolyne Corp 91 Howard H. Morde & Associates, Inc. Thermovac Industries Corp 134 M. B. Brucker Co., Inc. Arthur H. Thomas Co 122:122C Torsion Balance Co 22 Michel-Cather, Inc. U. S. Stoneware Co Ralph Gross, Inc.
53
The Victoreen Instrument Co Palm & Patterson, Inc.
29
The Welch Scientific Co Armstrong Advertising Agency, Inc. The Welch Scientific Co H. A. Hooker Advertising Agency, Inc. The Western States Machine Co Clint Leap, Inc. Whitey Research Tool Co Falls Advertising Co. Wilkens-Anderson Co. Mandabach & Simms; Inc. Wilkens Instrument & Research, I n c . . . Bob Barriskill Advertising Will Scientific, Inc Wolff Associates, Inc.
20 91 150 109 113 118 120
Yçllow Springs Instrument Co., Inc. Odiorne Industrial Advertising, Inc.
128
Carl Zeiss, Inc G. M. Basford Co.
IBC
Laboratory Supply Center 154-155 Burdick & Jackson Laboratories Clark Microanalytical Laboratory Crystal Research Laboratories, Inc. Dimco-Gray Co. Eastern Chemical Corp. George W. Gates Co. Wm. J. Hacker Co. Laboratory Plasticware Fabricators LaMotte Chemical Products Co. Numec Instruments and Controls Corp. Petroleum Analytical Research Corp. Referred Chemistry, Inc. University of Minnesota Valentine Instrument Co. Volk Radiochemical Co. M. Woelm
REINHOLD
PUBLISHING
Speed
filtration
CORPORATION
Advertising Management for the American Chemical Society Publications 430 Park Ave., New York, Ν. Υ. 10022 Cable Address: REINPUB NYK SALES REPRESENTATIVES Thomas N. J. Koerwer Advertising Sales Director, ACS Publications Clay S. Holden Advertising Sales Manager, Analytical Chemistry
SALES REPRESENTATIVES New York 10022 . . . Sam W. Percy, J. Barry Stanford, William N. Wham, Reinhold Publishing Corp., 430 Park Ave., 212-688-8600 Chicago 60602 . . . Eugene P. Eldridge, Reinhold Publishing Corp., I l l W. Washing ton St., 312-726-8497 Cleveland 44114 . . . Rodney D. Long (Cleve land Manager, Reinhold Publishing Corp.), East-Ohio Bldg., 1717 East 9th St., 216-771-4011 San Francisco 94105 . . . Morton McDonald, McDonald-Thompson, Inc., 625 Market St., 415-397-5377 Lps Angeles 90005 . . . George E. Halleman, Jr., McDonald-Thompson, Inc., 3727 W. 6th St., 213-387-5391 Seattle 98106 . . . . T. H. Abney, McDonaldThompson, Inc., 1008 Western Ave., 206-623-3766 Portland 97201 . . . . Francis M. Eaton, Mc Donald-Thompson, Inc., 2727 Oak Lawn Avenue, 503-222-1546 Denver 80203 . . . Robert H. Heidersbach, Mel G. Carlson, McDonald-Thompson, Inc., 840 Lincoln St., 303-825-3325 Houston 77006 . . . . Frank I. Vickrey, McDonald-Thompson, Inc., 3130 Southwest Freeway, 713-529-6711 Dallas 75219 . . . C. Parker Harris, Mc Donald-Thompson, Inc., 2727 Oak Lawn Ave., 214-521-1266 Tulsa 74114 . . . Max C. Nelson, McDonaldThompson, Inc., 2570 South Harvard, 918-742-9961 Great Britain and Western Europe . . . Brayton Nichols, The American Magazine Group, 44 Conduit Street, London W. 1, England Japan . . . Genzo Uchida, Bancho Koheki Co., Ltd., 5-5 Hayabusa-cho, Chiyoda-ku, Tokyo, Japan
A Coors Shapiro Speedi Filter disc greatly increases the efficiency of Buchner funnels through the utilization of a major portion of the filter paper surface. In some filtering operations, filtration is limited to those areas of the filter paper which lie directly over the holes in the Buchner funnel plate. With the Coors Shapiro Speedi Filter disc inter posed between the plate and the filter pa per, you utilize completely the entire area of the filter paper. The speed of filtration is greatly increased as is the quantity of sus pension which can be filtered by a single sheet of paper. What's more, the t o t a l surface is uniformly coated. Coors filter discs are immediately available through your laboratory supply dealer, in four standard sizes or in an assortment of the four sizes. WARE CARRY T H I S MARK OF DEPENDABILITY
COORS U.S. A. COORS PORCELAIN COMPANY, G O L D E N , COLORADO
Circle No. 116 on Readers' Service Card VOL. 36, NO. 6, MAY 1964
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