LABORATORY
SERVICE CENTER Microparticle Standards
DL-|S-Amino-n-butyric Acid · p-Aminohippuric Acid · DL-a-Alanine Aniline Phosphate & Sulfate · 1-Bromonaphthalene · Cesium Chloride Cinchophen · Dibenzoylmethane · 1,2-Diethoxyethane · 1,3-Dimethylurea Dulcitol · Esculin · Glutaric Acid · Glycolic Acid · Malonic Acid Maltose · Mercuric Potassium Iodide · N-Methylformamide · Orcinol o-Nitrobenzaldehyde · Phenylthiourea · Phenylurea · Rhodanine Sodium Pyruvate · Sodium Tetrathionate · Succinimide · Sulfonazo III Tetraphenylarsonium Chloride · Thionin · Vanillic Acid · Xylitol
Large assortment of well-characterized microspheres and micropowders for analytical, research, and testing applications. Range of diameters from .05 to 500 microns (urn!. Size and other physical properties are listed for each product. Materials include polystyrene, glass, pollens, minerals, many others. Write or telephone for Data File 45.
Write for our Products List of over 3000 chemicals Tel: 516-273-0900
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H A U P P A U G E , Ν . Υ.
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Duke Scientific Corporation
LAB S A F E T Y S U P P L Y C O . P.O.Box 1422, Janesville, Wl 53545
11787
M A S S SPECTROMETER Laboratory Service Center (Equipment, Materials, Services, Instruments for Leasing), Maximum space — 4 inches per advertisement. Column width, 23 / 1 6 " ; two-column width, 4-9/16". Artwork accepted. No combination of di rectory rates with ROP advertising. Rates based on number of inches used within 12 months from date of first insertion. Per inch: 1 " — $63; 12" — $62; 2 4 " — $60; 36" — $59; 48" — $58.
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ANALYTICAL SERVICES
ANALYTICAL CHEMISTRY 25 Sylvan Road, So. Westport, Ct. 06880
• Q* ΑηΛίνιιί, GC Org Man Sppt. I C • Industrial Hygiene Pollufiun Î M N
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203-226-7131
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63
'Eastman Kodak Company Rumrill-Hoyt, Inc. Finnigan Institute John Feack
1 22, 23
J. T. Baker Chemical Company Naimark & Barba, Inc.
24, 26
"Bausch & Lomb Blair Advertising, Inc. " Beckman Instruments, Inc Ν W Ayer ABH International
27 19, 20
* Brinkmann Instruments, Inc Blatt Advertising, Inc.
21
* Bruker Instruments, Inc Schwietzer Advertising Buchler Instruments Fletcher-Walker-Gesell, Inc. * Bur dick & Jackson Laboratories, Inc. . Studio 5 Advertising 'Carle Instruments The Knollwood Advertising Group
28 25 36 37-41 34 33
696A 75 627A, 684A
76
Fluid Metering, Inc Arnold H. Nachman Associates 'Gilford Instrument Laboratories, Inc. Oberlin Industrial Advertising
688A
84
645A
82
'Gilson Medical Electronics, Inc. Towell, Inc. Advertising
682A
85
'Glenco Scientific Boone Advertising, Inc. Gould Incorporated Carr Liggett Advertising, Inc. Haake, Inc Conceptual Marketing, Inc.
688A
712A 646A 83 652A 101 661A 99
'Hamilton Company Mealer & Emerson, Inc.
696A
97
'Hellma International, Inc. . . . Miller Advertising Agency
689A
102, 103
Hewlett-Packard CK Associates Advertising
7 1 0 A · ANALYTICAL CHEMISTRY, V O L . 5 0 , NO. 7, JUNE 1 9 7 8
624A 654A
OBC, 629A
Corning Glass Works Winterkorn, Hammond and Lillis, Inc.
701A
'Finnigan Instruments , Robert Pease & Co. Advertising
697A
694A
617A ,
77 625A, 680B*
'Chromatlx David R. McClurg Columbia Scientific Industries Columbia Advertising Associates
611A
669A 659A 630A-631A 660A 649A,673A
