INDEX TO ADVERTISERS IN THIS ISSUE Taylor Instrument Companies 134 Batten, Barton, Dustine & Osborn, Inc. W. A. Taylor & Co 150 Emery Advertising Corp. Techne (Princeton) Ltd 64 Technicon Controls, Inc IS Mediad, Inc. Texas Nuclear Corp., Subsidiary of Nu clear-Chicago Corp 65 Sidney Clavton Associates Thermolyne Corp.. . , 136 Howard H. Monk & Associates, Inc. Thermovac Industrie* Corp 32 M. B. Bmcker Co.. Inc. Arthur H. Thomas Co 128:128C Tracerlab, Inc 25 Hepler & Gihney Henry Troemner, l i e 156 John F . Tucker, Jr, Ultra Carbon Corp Church and Guisewite Inc. U. S. Stoneware Co Ralph Gross, Inc.
28
Advertising,
120
Vanguard Instrument Co Waldie & Briggs, Inc. Victor Equipment Co George C. McNutl Advertising The Victoreen Instrument Co Palm & Patterson, Inc. Victory Engineerng Corp Keyes, Martin & Co.
9G-97
The Welch Scentific Co H. A. Hooker Advertising Agency, Inc. The Western States Machine Co Clint Leap, Inc.
P A R R Safety
61 57 153
Whitey Research Tool Co Falls Advertising Co. Wilkens-Anderson Co Mandabach & Simms, Inc. Wilkens Instrument & Research, Inc.. . Bob Barriskill Advertising Carl Zeiss, Inc G. M. Basford Co.
63
SALES REPRESENTATIVES New York 10022 . . . Sam W. Percy, J. Barry Stanford, Reinhold Publishing Corp., 430 Park Ave., 212-688-8600 Chicago 60602 . . . Eugene P. Eldridge, Rein hold 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 Los Angeles 90005 . . . George E. Halleman, Jr., McDonald-Thompson, Inc., 3727 W. 6th St., 213-387-53911 Seattle 98106 . . . T. H. Abney, McDonaldThompson, Inc., 1008 Western Ave., 206-623-3766 Portland 97201 . . . Francis M. Eaton, Mc Donald Thompson, Inc., 2035 SW 58th 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, Mc Donald-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 . . . Bray ton 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
101 9
OBC: 132-133
Laboratory Supply Center 162-163 Burdick & Jackson Laboratories Clark Microanalytical Laboratory 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. Valentine Instrument Co. M. Woelm
REINHOLD PUBLISHING CORPORATION Advertising Management for the American Chemical Society Publications 430 Park Ave., New York, Ν. Υ. 10022 Cable Address: REINPUB NYK SALES REPRESENTATIVES
93
Advertising
146
Thomas N. J. Koerwer Sales Director, ACS Publications
Advertising
Clay S. Holden Sales Manager, Chemistry
Analytical
Shield
For Sodium Peroxide B o m b s C o n s t r u c t e d of 3 / 1 6 " steel plate, 12" wide χ 10" deep χ 15" high with a 3 / 4 " safety glass win dow.
HELLER
Complete with attachment·
ELECTRONIC CONTROLLED
LAB MIXER • CONSTANT TORQUE • STEPLESS VARIABLE DC SPEEDS FROM AC LINES) T h i s new enclosure provides steel plate protection against accidental explosions when firing a n y P a r r sodium peroxide bomb. It is recommended especially for flame ignition procedures in which t h e bomb must be heated to a high t e m p e r a t u r e to force a reaction to completion. It should also be used when ever there is reason to suspect that a sample might react violently during t h e combustion process. Ask for Specification
PARR INSTRUMENT
2150
COMPANY
211 Fifty-Third St.. Moline, Illinois
• Thyratron tubes on the Heller GT-21 controller supply demanded current by converting power in Stepless variation to the direct current motor. Assures constant torque as mixes become either
Order from your Laboratory Supply Dealer or write—
GERALD K. HELLER CO. 2671 South Western Street ·
Circle No. 73 on Readers' Service Card
viscous or fluid. Variable, reversi ble motor has direct and gear drive. Armature shaft speed, 0-5000 rpm. Gear shaft 18:1 ratio. Chuck, s h a f t s , 3 - s t e p p u l l e y included.
Las Vegas, Nevada ·
P. 0 . Box 4426
Circle No. 52 on Readers' Service Card VOL. 3 6 , N O . 3 , MARCH 1 9 6 4
·
165 A
