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Go-Go-Go to EASTERN . . . for your Organic Reagents! ct-Angelicalactone · Benzoic Anhydride · Benzonaphthoi Benzhydryl Bromide · l-Bromo-2-Naphthol · tert.-Butyl Bromide Diacetyl M o n o x i m e · 2,6-Dinitrotoluene · N,N-Diphenylbenzidine a-Ketobutyric, 2-Naphthoic, 5-Nitrosalicylic & Violuric Acids 3-Methylcyclohexanol · 2-Methylcyclohexanone · Propionamide Phenyl Disodium Phosphate · Sodium /3-Hydroxy-n-Butyrate Write for list K-66 of other organic chemicals Tel.: 2 0 1 6 9 6 - 1 7 0 0
TWX: 510 234-5831
Zip Code 07440
EASTERN CHEMICAL CORPORATION 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 f e e d reactor. Since 7 955—EXPERIENCE COUNTS)
Petroleum Analytical Research Corporation P. O . Box 1 Î 3 3 4 Houston, Texas 77017 Tel. M l 9-2753
PEQUANNOCK, N. J.
Specialists in C o l o r i m e t r i c Techniques Reagents—Standards—Comparators Send f o r Illustrated C o n t r o l s C a t a l o g
Dept. AC
NOW! DISPENSE ACIDS & SOLVENTS
REPEATEDLY WITH MINI-PET non-stick syringe-type dispenser Chloroform, toluene, x y l o l . . . a wide variety of acids...MINIPET d i s p e n s e s t h e m a l l q u i c k l y , s i m p l y , w i t h onehanded ease. And MINI-PET'S Teflon plunger and " 0 " ring eliminate "freezing." Ideal for a u t o m a t i c p i p e t i n g , group inoculation, dispensing from remote containers: completely autoclavable, easily disassembled. Available in 1 cc, 2 cc, and 10 cc sizes: from $21.50 complete. Write for Bulletin.
222 A
·
ANALYTICAL CHEMISTRY
Fluoride
AMADAC-F
TM
Convenience-packaged mixture of lanthanum chelate of 3-amlnomethy!alizarin-NN-diacet!c acid, buffers and stabilizers, affords accurate, sensitive and convenient quantitative colori metric method for fluoride. €0 o. (for 100 detns.), with bibliography and complete instructions $15 BURDICK & JACKSON LABORATORIES 1953 S. HARVEY ST., MUSKEGON, MICHIGAN
CH, N , S, Halogen, Fluorine, Oxysen, Alkoxyl, Alkimide, Acetyl, Terminal, Methyl, etc. by specialists in organic microchemical analysis. Howard S. Clark, Director P. O. Box 69, Urban», 111. 61802—Telephone ^ ^ J 7
OXYGEN DETERMINATION BY ACTIVATION ANALYSIS
SPECIAL
LIGHT • Mercury Point Sources • Raymaster Blacklight (Ioil! and short wave ultraviolet) • Sodium Vapor r · Mercury Vapor • Zirconium. Xenon, Deuterium and Hydrogen Arc Lamps • Imported Spectral Lamps • Photochemical or High Intensity "Uviarcs" • Auxiliary Operating Equipment for above WRITE FOR FREE CATALOG OR CONTACT YOUR LABORATORY SUPPLY DEALER
GATES
GEORGE W. GATES & CO. LUCILLE AVE FRANKLIN SQUARE. L.I.. N.V.
GAS ANALYSES Mass Spectrometry · Gas Chromatography GOLLOB
- V a c u u m and
ANALYTICAL SERVICE
INC.
47 Industrial Road, Berkeley Heignts, N. I . 07922 201-464-3331 — ^ — ^ — —
A T O M I C ABSORPTION f l a m e emission, colorimetric a n d other ANALYSES now available a t K a m a n Nuclear Corp., 1700 G a r d e n of t h e Gods R d . , Colorado S p r i n g s , Colorado Write for complete information.
YOUR ANNOUNCEMENT of Chemicals and Materials for sale and/or Wanted can carry YOUR MESSAGE fo the readers of the lead ing work magazine for instrumentation, con trol and analysis. ANALYTICAL CHEMISTRY
MANOSTAT Corporation Available through your laboratory supply dealers 20 N. Moore St., Dept. 521, N.Y., Ν. Υ. 10013
Best for
CLARK MICROANALYTICAL LABORATORY
SOURCES 1919—1966 La M o t t e Chemical Chestertown, Maryland U . S . A .
S U Ρ Ρ LY CENTER
Advertising Office: 430 Park Avenue New York, N. Y. 10022
General Atomic offers faster service and lower prices for oxygen determinations. Results can be telephoned within 2 working days of receipt of samples and then immediately confirmed via air mail. Prices are now as low as $7 per sample in quantity and $20 per sample in small lots. Activation Analysis is rapid, nondestructive, accurate ( ± 2 % of the value at higher oxygen levels), and sensitive (down to 1 ppm in large samples). It is also available for many other elemental determinations in a wide range of FOR DETAILED INFORMATION, AND A FREE BROCHURE, contact: Manager, Activation Anal ysis Service, Dept. AA-11, General Atomic, P.O. Box 608, San Diego, Calif. 92112. Phone (714) 453-1000, Ext. 618. G E N E R A L D Y N A M I C S G E N E R A L A T O M I C D I V I S I O N Visit Booth 102, Pittsburgh Conference
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Rate per inch $31.00 30.00 29.00 27.00
ANALYTICAL CHEMISTRY Advertising Office: 430 Park Avenue
New York, Ν. Υ. 10022
