Gas chromatographers: Advertising Management for the American Chemical Society Publications REINHOLD PUBLISHING CORP., a Sub sidiary of Litton Publications, Inc., Division of Litton Industries, Inc. Thomas N. J. Koerwer, Advertising Sales Director, ACS Publications; Alfred E. Gall, Advertising Pro duction Director, 430 Park Ave., New York, N.Y. 10022 (Area Code 212 688-8600). Cable Address: REINPUB NYK
SALES DEPARTMENT J. Barry Stanford Advertising Sales Manager
SALES REPRESENTATIVE New York 10022 . . . J. Barry Stanford, Frank Ryan, Murray Strelitz, Reinhold Publishing Corp., 430 Park Ave., 212-¬ 688-8600 Philadelphia 19107 . . . James A. Bryne, Reinhold Publishing Corp., 12 So. 12th St., 215-922-0346 Chicago 60603 . . . Eugene P. Eldridge, Reinhold Publishing Corp., 10 So. La Salle St., 312-726-1282 Cleveland 44114 . . . Michael Hayes, Rein hold Publishing Corp., East Ohio Bldg., 1717 East 9th St., 216-771-4011 Los Angeles 90045 . . . Clay S. Holden, Lynn Gaskill, Reinhold Publishing Corp., 8939 So. Sepulveda Blvd., 213-776-0552 San Francisco 94109 . . . Clay S. Holden, Lynn Gaskill, Reinhold Publishing Corp., 415-421-8080 Denver 80203 . . . Robert H. Heidersbach, Roy McDonald Associates, Inc., 846 Lin coln St., 303-825-3325 Houston 77006 . . . Frank N. Vickrey, Roy McDonald Associates, Inc., 3130 South west Freeway, 713-529-6711 Tulsa 74114 . . . Max C. Nelson, Ray Mc¬ Donald Associates, Inc., 2570 South Harvard Ave., 918-742-9961
Great Britain and Western Europe . . . Brayton Nichols, The American Maga zine Group, 44 Conduit Street, London, W. 1, England
win
your own copy of The Rubber Handbook P O R A P A K ® microporous polymer GC c o l u m n packings are still so new and revolutionary that even we don't know everything they can separate. So we want to learn what you have done with Porapak. Send us a chromatogram of an unusual GC separation you've made with Porapak. If yours is one of the three most interesting received this month, we'll reward you with a copy of The Rubber Handbook for your own home or office.* Since its development just three years ago, Porapak has become one of the most widely used packing materials in gas chromatography. Reasons: No liquid phase needed; stability at high temperatures; no b l e e d i n g ; sharp, symmetrical peaks with excellent baseline stability; easy column packing. We now offer eight types of Porapak, including two deactivated grades, for the widest range of polar and non-polar c o m pounds with boiling points as high as 300°C. N o w — h o w about that c h r o m a t o g r a m of a separation you couldn't have made without Porapak? Send your c h r o m a t o g r a m to the address shown below, and tell us where to ship 4253 your prize.
James L. Waters, President WATERS ASSOCIATES INC. 61 Fountain Street Framingham, Mass. 01701
WATERS ASSOCIATES
*P.S.: If your chromatogram isn't among the month's winners, you'll still get a pleasant "thank you" gift. Circle No. 106 on Readers' Service Card
We've got more NMR Solvents to choose from! Take your pick of the best. The choice should be easy ; there are now 67 deuferated solvents and standards for NMR with the EM-Reagents label...the largest selection available. Find the ones you need or w o u l d like to try in our complete catalog of EM analytical chemicals. For your free copy, just write: EM-Reagents Division, Brinkmann Instruments, Cantiague Road, Westbury, N.Y. 11590. ADIVISIONOF
EM-Reagents BRINKMANN
Japan . . . Sumio Oka, International Media Representatives, Ltd., 2-4, 6-chome, Akasaka, Minatoku, Tokyo, Japan
PRODUCTION DEPARTMENT Anne Forrest Advertising Production Manager
Circle Νo. 23 on Readers' Service Card
VOL. 4 1 , NO. 3, MARCH 1969
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