LABORATORY
SERVICE CENTER
Abietic acid · 3-Aminophthalhydrazide · Anisoin · 4-Benzylpyridine Bromoacetal · m-Bromoaniline · 1-Bromonaphthalene · 2,6-Dibromopyridine Dichloroacetic acid · Dimethyl Glyoxime & Na salt · N,N'-Diphenylbenzidine D+Galactosamine HCI · HABA · INT · Mandelic acid · N-Methylacetamide Methylene Iodide · Mucobromic acid · Nadic Anhydride · α-Naphthyl Red o- & p-Nitrobenzaldehydes · Oxamide · pH Indicators · o-Phthalaldehyde 2-Pyridinealdehyde · Rhamnose · Sodium Adipate · Sodium Dithionate Sodium /3-naphthoquinone-4-sulfonate · Sodium Thioglycolate · Thymol Violet
Send Us Your Toughest Problems — TODAY! L C Services Corporation 165 New Boston Street Woburn, MA 01801
(6171938-1700
Write tor our Products List of over 3000 chemicals TWX: 510-227-6230
Tel: 516-273-0900 · TOLL FREE: 800-645-5566
P. O. Box 2500
EASTERN CHEMICAL
DEPT. AC
A D i v i s i o n of U N I T E D - G U A R D I A N , INC.
S M I T H T O W N , Ν. Υ.
11787
USE
Laboratory Service Center (Equipment, Materials, Services, Instruments for Leasing), Maximum space — 4 inches per advertisement. Column width, 2 - 3 / 1 6 " ; two-column width, 4 - 9 / 1 6 " . Artwork accepted. No combination of directory rates with ROP advertising. Rates based on number of inches used within 12 months from first date of first insertion. Per inch: 1 " — $107; 1 2 " — $105; 2 4 " — $ 1 0 1 ; 3 6 " — $98; 4 8 " — $96. CALL OR WRITE BARBARA
LABORATORY SERVICE
AUFDERHEIDE
CENTER
ANALYTICAL CHEMISTRY 25 Sylvan Road South P.O. Box 2 3 1 Westport, Ct. 0 6 8 8 1 203-226-7131
INDEX TO ADVERTISERS IN THIS ISSUE CIRCLE INQUIRY NO.
ADVERTISERS
PAGE NO.
CIRCLE INQUIRY NO.
ADVERTISERS
1
'Academic Press, Inc. . Flamm Advertising
897A
58
Dynatech Precision Sampling D. Allen & Associates
822A
4
Ainsworth IF Enterprises
859A
13
EG&G Princeton Applied Research The Message Center
855A
3
'Alltech Associates Chromad
826A
64
*Eldex Laboratories LaPointe, Schott & Smith, Inc.
834A
5
Analytichem International Forsythe Advertising, Inc.
894A 68-69
'Fisher Scientific
19
*B&L Instruments/Spectroscopy Systems Div Infantino/Corea Enterprises, Inc.
812A
97
Galileo Electro-Optics Corp. . Edward Heske Associates
17
*J. T. Baker Chemical Company Stiegler & Wells
871A
66
Gelman Sciences, Inc. Tl Group Ltd.
14
'Beckman Instruments . LaPointe.Schott & Smith, Inc.
847A
95-96
'Gilson Medical Electronics LaPointe, Schott & Smith, Inc.
795A
30-31
"Bioanalytical Systems Kissinger Advertising Assoc.
102
Hach Chemical Company Art Service/Technical Promotions
822A
22-23
'Brinkmann Instrument Lavey/Wolff/Swift
98-99, 100-101
'Hewlett Packard Company Pinne, Garvin & Hock
24-27
'Burdick & Jackson 834A, 857A, 861A, 894A Nordstrom/Cox Marketing
xx
Hewlett Packard Company J. Walter Thompson Company
32
Carlo Erba Strumentazione
867A
xx
153
Delsi/Nermag
819A
IBM Instruments, Inc Chope Communications
55
Desmo Chemical Corp Kenyon Hoag Associates
828A
109
'Instruments SA, Inc Kathy Wyatt & Associates
859A, 894A OBC
908 A · ANALYTICAL CHEMISTRY, VOL. 55, NO. 8, JULY 1983
843A, 882A 869A
884A-885A
823A,898A 889A 839A-841A 811A
