S U Ρ Ρ LY CENTER
LABORATORY A l l y l Thiourea · 4-Aminobenzonitrile · 2-Aminobenzophenone Aniline Sulfate · 4-Benzylpyridine · Cesium Chloride · I.N.T. m-Cresotinic Acid · 1,2-Cyclohexanedionedioxime · Cyclohexylurea 2,6-Dibromophenol · 2,4,6-Tribromophenol · 2,4,6-Triiodophenol 1,3-Dimethylurea · 4-Hydroxyacetophenone · 4-Hydroxybenzophenone Dipicoiinic, Ethoxyacetic, Flavianic & 4-Nitrocinnamic Acids DL-Methionine Methylsulfonium Chloride · a-Naphthyl Acetate 5-Nitrosalicylaldehyde · Oxanilide · Terephthalonitrile 1,2,3-Tribromopropane · Trimethylene Dibromide · Xylose Write for list K-68 of other chemicals Tel: 201 696-1700
TWX: 710 988-5831
Zip Code 07440
EASTERN CHEMICAL CORPORATION MASS SPECTROMETRY Instantaneous Scanning of Gas Chromatographic Effluent I i -i-i-T r- ι τDirect Solids Introduction I
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ANALYTICAL SERVICE
ee 2-2000
Resolution 3000 Write for brother»
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BOX Κ P E Q U A N N O C K , N. J.
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A N A L Y T I C A L D I V I S I O N Alpha Metals, Inc. 56 Water Street, Jersey City, N.J. 07304 · 201 «434 6778
TRACE ELEMENT:;©, PROBLEMS? OTWÉP Contact Activation Analysis Service, Dept. A-232, Gulf General Atomic I n corporated, P. O. Box 608, S a n Diego, California 92112. O r p h o n e collect 714/ 453-1000, Ext. 421. PROMPT
SHIPMENT
TETRABUTYLAMMONIUM COMPOUNDS Acetate - Bromide - Chloride - Fluoride - H y d r o x i d e Iodide - Perchlorate Solid
Liquid
Polarographic
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Optical emission, x-ray, atomic absorption equipment; metal log rap hie. wet chemical facilities. 48-hour service. • Tin/Lead Solder Pot Samples • High Purity Metals & Alloys • Non-ferrous Alloys * Precious Metals • Scrap • Electroplating Baths & Deposits.
CABLE ADDRESS. SACTEX
46 Industrial Road, Berkeley Heights. N. I.07922-201-464-3331
To
CALL A L P H A FOR M E T A L A N A L Y S I S
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Crystalline
Aqueous
Non-aqueous
Anhydrous
Methanolic
SOUTHWESTERN ANALYTICAL ruruirAi c
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"SS — AUSTIN, TEX
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in B O I L I N G L I Q U I D S Prevent superheating and boiling loss. Speed d i s t i l l a t i o n . S a f e . E f f i c i e n t .
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H E N G A R GRANULES A division of Henry Troemner, Inc. 6815 Greenway Ave., Phila., Pa. 19142 Phone (215) 724-0800
THE UNIVERSITY OF MINNESOTA offers in June, July and September 1968 A COURSE I N MEASUREMENT TECHNIQUES I N HEAT TRANSFER * June 20-28 Conducted by the Heat Transfer Laboratory of the School of Mechanical and Aerospace Engineering; Professors E. R. G. Eckert, R. J. Goldstein, W. E. Ibele, E. Pfender, C. J. Scott and Ε. Μ . Sparrow. Guest lecturers w i l l be J. A . Clark, D. K. Edwards and W. Leidenfrost. TWO COURSES IN INFRARED SPECTROSCOPY * July 9-13 Techniques of Infrared Spectroscopy *JuW 15-19 Chemical Interpretation of Infrared Spectra Conducted by the Molecular Spectroscopy Labora tory, Department of Chemistry; Professors Stuart Fenton and Bryce Crawford; the lectures begin with the fundamentals and carry through to include the more recent developments. Guest lecturers w i l l be W. J- Potts, Clara D. Smith, Lionel J. Bel lamy and Foil A . Miller. Basic training in chem istry and especially knowledge of the organic nomenclature is necessary. A COURSE I N X-RAY DIFFRACTION A N D SPECTROSCOPY * September 3-14 Conducted by the Crystallographic Laboratory, Department of Geology and Geophysics; Professors Tibor Zoltai, John M . Sivertsen, Morris E. Nichol son, Jr.; this Course is designed for beginners in x-ray diffraction and spectroscopy to give an i n troduction to basic crystallography and cover the practical aspects of x-ray diffraction, x-ray fluores cence, and electron microprobe analysis, which offer immediate application in many phases of science and industry. FOR further information and registration form, write: Department of Conferences and Institutes, Nolte Center for Continuing Education, University of Minnesota, Minneapolis, Minnesota 55455
148 A
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ANALYTICAL CHEMISTRY
CEC 21-103C MASS SPECTROMETER SERVICE Accepted Industry standard. Resolution to mass 6 0 0 . Suitable for most organic gases, liquids, solids (min. vapor press. 1 mm. Hg. at 3 0 0 ° C ) . Complete petroleum laboratory * Continuous and batch distillations * Pilot plant facilities include high temp.-high pressure continuous feed reactor. Since 7955—EXPERIENCE COUNTS/
Petroleum Analytical Research Corporation P. O . Box 1 Î 3 3 4 Houston, T . X M 77017 Tel. M l 9-Î753
WANTED: GAS CHROMATOGRAPHS IR & UV Spectrophotometers, Atomic Absorption, Autoanalyzers, X-Ray Diffraction, Oscilloscopes, Computers. All types of Laboratory Equipment Bought, Sold, Traded and Leased. For more information, and a subscription to our free goldmine, Laboratory Instrument Mart, contact Laboratory Instrument Exchange, Inc., Dept. 12, 166 E. Superior, Chicago, III. 60611 (312) 944-1450
now even better for Fluoride
AMADAC-F Convenience-packaged mixture of lanthanum chelate of 3-aminomethylalizarin-NN-diacetic acid, buffers and stabilizers, affords accurate, sensitive and convenient quantitative colorimetric method for fluoride. 50 g. (for 100 detns.), with bibliography and complete instructions $15
BURDICK & JACKSON L A B O R A T O R I E S , INC. 616 7222310
LaMotte Chemical Chestertown, Maryland U.S.A. Specialists in Colorimetric Techniques Reagents—Standards—Comparators Send for Illustrated Controls Catalog Dept. A C
Rates Available on Request
MUSKEGON, MICHIGAN 49442
MASS SPECTROMETRIC ANALYSIS Thin films-solid state materials. Bulk and trace analysis of all solid m a t e r i a l . Concentration gradients of diffused impurities. Resolution 5000. Sensitivity to parts per billion. GCA Technology Division, division of GCA Corporation, Bedford, Mass., Tel. (617) 275-9000. Attn: B. Bernstein
Analytical Chemistry Anne Forrest, Production Manager
430 Park A v e n u e N e w York, Ν . Υ. 10022 212-MU 8-8600
