LABORATORY Do you
Need:
Chromatographic Aluminas?
ANSELL-PLAX all-polyethylene
WASH BOTTLES
(Sized, purified, standardized/basic, acid, neutral) ASK FOR PRICE LIST AA
BIO-RADLaboratories
3 2 n d & GRIFFIN AVE. • R I C H M O N D , CALIFORNIA
SQUEEZE — THAT'S ALL
(For fractionation of proteins, nucleic adds, and enzymes) ASK FOR PRICE LIST ACX
BIO•RADLaboratories
ONLY ANSELL-PLAX, FIRST POLYETHYLENE BOTTLE,
HAS
THE
ASSEMBLY
PATENTED*
THAT
MEANS
•
NO LEAKING, SEEPING
•
QUICK, EASY REMOVAL OF CAP ASSEMBLY
OR NECK
SPRAY
4, 6, 8, 16 & 32-oz. s i z e s . Conveniently p a c k e d in individual set-up boxes. Call your lab supply house or write us directly.
Analytical Grade Ion Exchange Resins? (Prepared from Dowex Resins) ASK FOR PRICE LIST AM
BIO•RAD Laboratories 32nd & GRIFFIN AVE. · RICHMOND, CALIFORNIA
*fltment covered by U.S. P a t e n t #2783919
"STANDCO" VARIABLE SPEED
S. H. ANSELL & SON, INC.
STIRRER A precision made High Quality Stirrer with 2 Hollow Shafts.
1919—1961 La Motte Chemical Chestertown, Maryland U.S.A.
2.
Rugged and compact with many outstanding features BULLETIN Τ 002
HERMAN H. STICHT CO., INC. 27 PARK PLACE, NEW YORK 7, N.Y.
TRADE-MARK
HIRE
A r a p a h o e can help y o u solve your problems of interm ediate-seal e manufacturer. . . . Is e s p e c i a l l y q u a l i fied for operations involving the hazardous Grignard reaction. For C U S T O M SYNTHESIS we i n v i t e y o u r c o n f i dential inquiry. Ask Dept. " J " f o r MADE TO ORDER, C H E M I C A L S b y ARAPAHOE.
ARAPAHOE CHEMICALS, I N C . 2855 WALNUT STREET · BOULDER, COLORADO PRODUCERS OF FINE ORGANIC CHEMICALS
LIGHT SOURCES by GATES • •
Raymaster Blacklight (Ions and short wave ultraviolet) Sodium Vapor
• •
Mercury Vapor Zirconium Concentrated Arc Lamps
•
Mercury Point Sources
• •
Imported Spectral Lamps Photochemical or High Intensity "Uviarcs"
•
Auxiliary Operating Equipment for Above Writp-for F R E E C a l o l ° 9 O I Contact ffwlllw your Laboratory Supply Dealer
GEORGEW.GATES&CO. Box
2 1 6 , Franklin
Low Speed approx. 18-270 RPM High Speed approx. 150-2250 RPM With Increased power at decreasing speeds.
Specialists in Colortmetric Techniques Rea gents-—Standards—Comparators Send for illustrated Controls Catalos Dept. A C
ARAPAHOE
SPECIAL
LABORATORY
8 2 5 Summer St., Boston 2 7 , Mass.
FOR
HYGROMETERS for very dry gases . · . reads dewpoints to —150 C . . . detects 1 part in 10 million . . . . new ca pacitance principle. ATKINS TECHNICAL INC. 1276 W. Third SteCleveland 13, OhioeSUperior 1-1332 temperature & humidity instrumentation Bulletins Upon Request
Cellex Cellulose Ion Exchangers? 32nd & GRIFFIN AVE. . RICHMOND, CALIFORNIA
DISPENSING
"shaw"
Vo- tyou TUeet:
Get the stream you want. Can't break . . . won't slip. It's unaffected by strong acids or al kalies. Specified for use by labora tories everywhere —government, insti tutional, industrial.
WASH
SUPPLY CENTER
LABORATORY SERVICES WISCONSIN ALUMNI RESEARCH FOUN DATION
for the FOOD, FEED, DRUG and CHEMICAL INDUSTRIES Analyses, Biological Evaluation, Toxicity Studies, Insecticide Testing and Screening, Flavor Evaluation. Project Research and Consultation W r i t e for Price Schedule P. O . Box 2 2 1 7 · Madison I , W l i .
TRIPHENYLAMINE · CHLORANILIC ACID 2, 5-DINITROBENZOIC ACID · ORCEIN W r i t e for listing of other fine organic c h e m i c a l s .
EASTERN CHEMICAL CORPORATION
•
ANALYTICAL CHEMISTRY
^LlTV^'f ELECTRIC
MASS SPECTROMETER SERVICE
LAB
PETROLEUM A N A L Y T I C A L RESEARCH CORP. P. O. Box 12334 Houston 17, Texas Tel.
Mission 9-2753
TIMER
INFRARED W I N D O W S All standard sizes ready for delivery from stock. NaCI, KBr. CaF,, BaFî, CsBr and lrtran-2. Write for prices.
CIC
CONNECTICUT INSTRUMENT CORPORATION Wilton, Connecticut
CLARK MICROANALYTICAL LABORATORY C H , N , S, Halogen, Fluorine, Oxygen, Alkoxyl, Alltimide, Acetyl Terminal Methyl, etc, by specialists in organic micfochemical analysis. H o w a r d S. Clark, Director P. O. Box 17, Urbana, III.—Telephone EMpirc 7-8406
Giant 8 " Dial
GRA LAB INTERVAL TIMER Automatic signalling and switching over unusually wide range of 3600 possible settings. GRA LAB MICRO TIMER 1 10 sec. or 1/1000 min. stop clock. Remote start stop control. Write for catalog.
DIMCO-GRAY 210 Ε. SIXTH ST.,
134 A
Square, L . I . , N . Y .
COMPANY
DAYTON 2, OHIO
LABORATORY SUPPLY CENTER SCINTILLATORS FOR THE
Biological Scientist * Liquids f o r filter paper c o u n t i n g . * Beta a n d G a m m a
flow
detectors f o r
direct c o u n t i n g o f a q u e o u s s o l u t i o n . * Plastic w e l l u n i t s .
* Many other products include plastic phosphor NE 102 and fast and slow neuron detectors.
NUCLEAR ENTERPRISES
LTD.
1750 Pembina Highway WINNIPEG 12, CANADA Associate Co. : Nuclear Enterprises. (G.B.) Ltd. Sighthill, Edinburgh 11, Scotland
AIR POWERED STIRRERS For Laboratory Use * HIGH TORQUE * VARIABLE
SPEEDS
* LIGHT WEIGHT Type "A"
* DURABLE * EXPLOSION PROOF
For Light Duty Service
* QUIET * COMPACT
* ECONOMICAL See O u r Full Page A d in CHEMICAL MATERIALS C A T A L O G or Write tor illustrated Literature . . .
ARROW Engineering Co., I n c . 200 Central A v e , HIlMrfe. N . J.
SPECIFY
KERN When you want to combine accuracy and efficiency in a sturdy instrument at a moderate price . . . specify
KERN FULL-CIRCLE
POLARIMETER available through your lab supply dealer Ask for Bulletin KP 567
KERN COMPANY
7 Beekman St. New York 38
YOUR ANNOUNCEMENT of Equip ment or Chemicals for Sale and/or Wanted, and Professional Services, can carry YOUR MESSAGE to the readers of the leading work-maga zine for instrumentation, control and analysis. Rates
on
ALPHABETICAL LIST OF ADVERTISERS Ace Glass, Inc 114 Agency—Heller Creative Adv. Wm. Ainsworth & Sons, Inc 53 Agency—Walter L. Schump Adv. Alberene Stone Corp 116 Agency—G. M. Basford Co. Alconox, Inc 112 Agency—Firestone Advertising Agency, Inc. American Sterilizer Co 7 Agency—Altman-Hall Adv., Inc. Analytical Measurements, Inc 132 Agency—The Stuart Co. Anton Electronic Laboratories, Inc 75 Agency—Mol es wort h Associates, Inc. Applied Physics Corp 5:94 Agency—Clyde D. Graham Applied Science Laboratories, Inc 127 Agency—Horace S. Hand Adv., Inc. Atomic Accessories, Inc 50:8S Agency—Stemfield-Godley, Inc.
Baird-Atomic, Inc 14:47 Agency—F. P. Walther Jr. & Associ ates, Inc. J. T. Baker Chemical Co IFC Agency—Wildrick & Miller, Inc. Baker & Adamson Reagents, General Chemical Div., Allied Chemical Corp OBC Agency—Kastor, Hilton, Chesley & Clifford & Atherton, Inc. Barnstead Still & Sterilizer Co 10 Agency—Copley Advertising Agency, Inc. Bausch & Lomb Optical Co 73 Agency—Wolff Associates, Inc. Beckman Instruments Inc. Scientific—Process Div 45:113 Spinco Div 35 Agency—Charles Bowes Adv., Inc. Bendix Corp., Cincinnati Div 90 Agency—M acM an us, John and Adams, Inc. James G. Biddle Company 122 Agency—The Roland G. E. Ullman Organization J. Bishop & Co 37 Agency—Richardson, Thomas & Bush man, Inc. Branson Ultrasonic Corp 126 Agency—William Hill Field Adv. Brinkmann Instruments, Inc 114:122 Agency—Robert M. Marks & Co., Inc. Brooks Instrument Co., Inc 126 Agency—Thomas R. Sundheim Buehler Instruments, Inc 131 Agency—Firestone Advertising Agency, Inc. Burrell Corp 57 Agency—Frank Wilhelms Adv. Agency
Cahn Instrument Co 128 Agency—Haas DcGrasse Zimmerman California Laboratory Equipment Co.. . 64 Agency—Reynolds & Associates Central Scientific Co 82 Agency—Marsteller, Rickard, Gebhardt and Reed, Inc. The Chemical Rubber Co 105 Agency—Ad Enterprise Agency Chicago Apparatus Co 121 Agency—The Cramer-Krassclt Co. Clay-Adams 129 Agency—Cortez F. Enloe, Inc. Coleman Instruments, Inc 38:100 Β Agency—Hollander, Weghorn, Morrow, Adv. Connecticut Instrument Corp Ill Coors Porcelain Co 66 Agency—Galen E. Broyles Co., Inc. Corning Class Works 18 Agency—The Rumrill Co., Inc.
Request
ANALYTICAL CHEMISTRY Advertising Office: 430 Park Avenue New York 22, Ν. Υ.
Docrr Glass Co Agency—George F. Walsh Agency Duralab Equipment Corp Agency—Michael W. Schoen Co.
70 32
Eastern Industries, Inc Agency—Rems en Advertising Agency, Inc. Eaton-Dikeman Co Agency—Larcom Randall Adv., Inc. Eberbach Corp Agency— Drury, Lacy, Ferguson, Inc. Electric Hotpack Co., Inc Agency—Wilfred A. Jacobi Carlo Erba Ercona Corp Agency—Smith & Dorian Inc.
88 98 66 98 34 76
F & M Scientific Corp 41:125 Agency—Charles Platz Fischer & Porter Co 84 Agency—The Harry P. Bridge Co. Fisher Scientific Co 133 Agency—Fuller & Smith & Ross. Inc.
General Electric Co., X-Ray Dept Agency—Klau, Van Pietersom, Dunlap, Inc. Gow-Mac Instrument Co Agency—George Homer Martin Asso ciates Emil Greiner Co Agency—Fairfax, Inc. Groban Supply Co Agency—Elliot, Jaynes & Baruch, Inc.
67 121 1 120
Hamilton Co., Inc 69 Agency—L. J. Swain Adv., Inc. W. A. Hammond Drierite Co 130 Harshaw Chemical Co 68 Harsh aw Scientific Div. of the Harshaw Chemical Co IBC Hartman-Leddon Co 79 Haws Drinking Faucet Co 105 Agency—Pacific Advertising Staff Gerald K. Heller Co 122 Agency—Roman Advertising Agency, Inc. Hevi-Duty Electric Co 71 Agency—Bert S. Gittins Adv., Inc. High Voltage Engineering Corp 42 Agency—Moles worth Associates, Inc. Illinois Water Treatment Co Agency— Cummin gs. Brand, McPherson Associates, Inc. Industrial Instruments Inc Agency—Lescarboura Advertising, Inc. Instrumentation Associates Agency—A. D. Norbeck Co., Inc. International Equipment Co Agency—Grant Advertising, Inc. Isomet Corp Agency—Larry Alpaugh
40 107 130 74 120
JKM Instrument Co., Inc 126 Agency—Industrial Marketing Services Co. Jarrell-Ash Co 17:96:103 Agency—Briarbrook
Kennametal, Inc 108 Agency—Ketchum, MacLeod & Grove, Inc. Kimble Glass Div., Owens-Illinois Glass Co 16 Agency—J- Walter Thompson Co. Kinney Vacuum Div., The New York Air Brake Co 80 Agency—Humbert & Jones, Inc. Klett Mfg. Co 64:90 Kontes Glass Co 131 Agency—The Schurr Co. (Continued on page 136 A)
VOL.
3 3 , N O . 1 , JANUARY
1961
·
135 A
