MANUFACTURERS' LITERATURE
Pyrometers. Catalog gives descriptions and technical data on optical, micro-optical, radiation, immersion, surface, and indicating pyrometers. Eight pages, illustrated. Pyrometer Instrument Co. (Cat. 175). L-l Lighted Pushbutton Switches. Eightpage data sheet gives information, dimensional drawings, and photos of application for company's line of lighted pushbuttons. Prices included. Micro Switch Division (Data Sheet lJfi). L-2
Photoelectrical Controls. Catalog describes and illustrates photoelectric controls and photoelectric timing controls. Application diagrams and data are also given. Twenty-four pages. L-3 Autotron, Inc. Control System. Three data sheets discuss the current-adjusting type control system for continuously regulating power input to electric furnaces. Specifications for individual components are also given. Leeds & Northrup Co. [Data Sheet NDlfi-38 (107); Prel. Data Sheet NU9(8) ; Insert Folder ND4(7A)]. L-4
measure pH with laboratory precision... ANYWHERE!
Laboratory Supplies. Twenty-page catalog describes and illustrates varied equipment : water bath shakers, high vacuum pumps, Teflon ware, flowmeters, temperature controllers, fraction collectors, and other items. Prices included. Scientific Glass Apparatus Co. ("What's New for the Laboratory," No. 31). L-5
COMPAX is no toy. You can't fit it into your pocket. . . but you can take it with you—and you can m e a s u r e t r u e p H q u i c k l y and dependably, anywhere at any time. COMPAX is a complete pH meter of laboratory precision with everything you need in the case—batteries, buffers, electrodes—even beakers. Open the case and it's ready to use... close the cover and it's ready for a rough trip or long storage. COMPAX is convenient too— one control operation and large clear dial for fast, accurate readings. You can test a COMPAX yourself. Write for bulletin and 10 day free trial offer. Coleman COMPAX pH Meter, Model 20, complete with all chemicals, batteries and ready to use . . . $200.00
Company Periodical. Twenty-eightpage issue contains nine articles dealing with analytical chemistry and some specific procedures. Also, five pages are devoted to lab suggestions. A third feature is the second installment of a review, "The EDTA Titration: Applications." J. T. Baker Chemical Co. (Chemist-Analyst, Vol. 47, No. 1) L-6 X-Ray Analysis. Single sheet describes use of x-ray spectrograph by an actual company in determining percentages of elements in alloys. Philips Electronics, Inc. (Speed Alloy Analysis by X-Ray Method). L-7
COLEMAN
C O L E M A N COM PAX pH METER J COLEMAN
INSTRUMENTS
INC.,
DEPT. A ,
MAYWOOD,
ILLINOIS
For further information, circle number 82 A on Readers' Service Card, page 85 A
82 A
·
ANALYTICAL CHEMISTRY
Pulse Height Analyzer. Bulletin describes and gives specifications for the company's Model PA-400 fifty-channel pulse height analyzer. Four pages, illustrated. Eldorado Electronics (PA400 Tech. Bull). 1-8
Thermistor Probe Assemblies. Nine specially designed thermistor assemblies are described. Dimensions, mounting arrangements, and most common ap plication are given for each. Four pages, illustrated. Fenwal Electronics, Inc. {Brochure EM-IS). L-9 Laboratory Equipment. Catalog de scribes variety of laboratory items, such as an electric desalter, adjustable stools, laboratory carts, and fluid pumps. Sixteen pages, illustrated. Schaar & Co. (Lab-ORATORY, Mar. 1958). L-10 Redox Potential Measurement. Fourpage brochure covers company's O-R-P Cell and potentiometer type recorder for measuring, indicating, and record ing oxidation-reduction potential. Il lustrated. Fischer & Porter Co. (Cat. No. 17B100). L-ll
These are the world's most widely used spectrophotometers
House Publication. February issue of magazine designed for the science teacher contains digests of articles ap pearing in various journals. Also has section listing company's line of labo ratory and classroom apparatus. W. M. Welch Scientific Co. (Welch Phys ics and Chemistry Digest, Vol. 8, No. 2). L-12 Small Diameter Tubing. Twentypage booklet contains series of articles on some end uses of small diameter stainless steel, nickel, and nickel alloy tubing. Illustrated. J. Bishop & Co. Platinum Works. (Metal for Precision and Performance). L-13 House Periodical. Twelve-page win ter issue of company magazine contains various articles. Feature article is an examination of filter radiometry. Illus trations and diagrams. Perkin-Elmer Corp. (Instrument News, Vol. 9, No. 2). L-14 Light-Scattering Photometer. Oper ating principles, internal design, and representative instrument applications are described for the company's ab solute light-scattering photometer. Six pages. American Instrument Co. (Bull. Ν0.2295). L-15 High Temperature Oven. Four-page bulletin describes the company's EquaTherm high temperature oven. In cludes table of temperature differen tials. American Instrument Co. (Bull. No. 2299). L-16 Rare
Earth
Metals
and
More than 15,000 Coleman diffraction Grating Spectrophotometers are used in laboratories throughout the world. They have gained this wide acceptance because they deliver precise data more quickly and easily than any other spectro photometer. They have proved themselves to be rugged and reliable in laboratory service. The Coleman Universal Spectrophotometer is ideal for the laboratory with a variety of ana lytical problems and a heavy work-load. Fast, precise, versatile in spectrophotometry—fluorimetry—nephelometry. The Coleman Junior Spectrophotometer —the most practical and effective of all analytical tools for routine spectrophotometric analysis. 15 years of service and thousands of published pro cedures illustrate its reliability and recognition by the highest authorities in analytical chemistry. New literature available. Junior Spectrophotometer Bulletin B-240A Universal Spectrophotometer Bulletin B-241
Folder includes bulletins on cerium, lanthanum, didymium, and other rare earth metals and alloys. Also has bibliography of 118 references on uses of rare earths in ferrous and nonferrous For f u r t h e r details, see READERS' I N F O R M A T I O N SERVICE f o l l o w i n g this section
PH
COLEMAN
Alloys.
COLEMAN
Spectrophotometers COLEMAN
INSTRUMENTS
INC.,
DEPT. A ,
MAYWOOD,
ILLINOIS
For further information, circle number 83 A on Readers' Service Card, page 85 A
VOL. 30, NO. 5, MAY 1958
·
83 A
Superspeed Centrifuges
SERVALL
MANUFACTURERS' LITERATURE
Automatic Centrifuges
alloys, and in the electronics industry. New Process Metals, Inc. L-17
Enclosed Centrifuges Continuous Flow Centrifuges* Small, Medium, Large Angle Centrifuges Refrigerated Centrifuges Ultra-Microtome*
Chemical Specialties Analyses. Cata log lists chemical analysis reports avail able on about 1500 trade-name chemi cal specialties, such as cosmetics, deter gents, waxes, bleaches, and polishes. Includes price list of reports. Chemi cal Specialties Research Laboratories. L-19
Omni-Mixer Automatic Pipettes Accessories
centrifuge large v o l u m e s
continuously
"Szent-Gyorgyi. & Blum" Continuous Flow System* for all Servall Su perspeed Centrifuges. Separates small amounts of precipitate from large volumes of solution. Eliminates time-consuming batch opera tions. Flow rate up to 200 ml/min. or more. Sediment collected in up to eight tubes, supernatant flows continuously. SS-3 Automatic Push-Button Superspeed Centrifuge*. Completely auto matic acceleration, timing, braking, rotor imbalance shut-off. Ver satile, new rotor selection up to 17,000 rpm — 34,800 χ G. Armor plate enclosed. Unique "Noisuppressor" design. New "Gyro-Action" Self-Centering Drive*. Type SS-49 same but manually operated, with removable remote control panel. Sole Canadian distributor: Cave and Company. Ltd., Vancouver, Edmonton and Toronto Write for bulletin AC-5 IKS
Safety Enclosure. An all-purpose safety enclosure is described in a sixpage illustrated bulletin. A list of component parts for adaptation to particular needs is also given. S. Blickman, Inc. (Tech. Bull. A-ll). L-20
* Patents pending Laboratory Instrument Specialists Since 1930
Norwalk, Connecticut, U.S.A.
Ivan Sorvalla, Inc.
For further information, circle number 84 A-1 on Readers' Service Card, page 85 A
Still
Washing
Laboratory
Glassware
by
Hand?
PAYS FOR ITSELF WITHIN 3 MONTHS
C.R.C.
WASHES AND DRIES LABORATORY GLASSWARE
Labwasher
Automatically
Dew Point Determination. Specifi cations, description, and illustrations of the Alnor Dewpointer are given. The instrument measures dew point and \vater vapor density, pressure, and per cent by volume. Illinois Testing Laboratories, Inc. ( S e / . No. 1055). L-21 Infrared Spectrophotometers. Bro chure covers design and performance features of company's double beam and single beam I R spectrophotometers for routine laboratory analysis. Also lists accessory sampling equipment. Eight pages, illustrated. Beckman/Scientific Instruments Div. (Bull. No. 724). L-22 Laboratory Apparatus. Illustrated 16-page catalog lists various laboratory equipment, such as a recording analyt ical balance, a high temperature fur nace, new polyethylene items, and dis posable culture tubes. Scientific Glass A p p a r a t u s Co. (What's New for the Laboratory, No. S2). L-23
SAVES valuable man-hours wasted on h a n d - w a s h i n g
SAVES up to 5 0 % on annual glassware breakage
CABINET
Electrometer-Megohmmeter. Fourpage folder includes description, specifi cations, and price of the company's Type 8 electrometer-megohmmeter. Photos and diagrams. T r u m p I n s t r u ments (Bull. No. 1). L-18
MODEL
11245-10, $ 4 8 4 . 9 5
Laboratory Clamps. Catalog de scribes, illustrates, and gives prices for all types of Alumaloy clamps and set up frame equipment. Eight pages. Chicago Apparatus Co. L-24
V Proved successful operation ϊη all types o f laboratories. V Accommodates over 9 0 % o f all l a b o r a t o r y glassware. V Removes difficult oil-soluble material. V Eliminates need for distilled water rinse.
Zone Melting Purifier. Single page describes a p p a r a t u s for zone melting purification of organic compounds. Drawing of unit and price included. Microehemical Service. L-25
UNDER-COUNTER MODEL
V Minimum installation and maintenance requirements.
11245-5 . . . $ 4 0 4 . 9 5
Accessory racks a v a i l a b l e far volume washing of pelri dishes, culture lubes, sample bottles and hypodermic syringe assemblies. Write for Bulletin CLR for complete descriptive literature. SCIENTIFIC EQUIPMENT LAItORATORY
·
2310
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AVENUE
A N A L Y T I C A L CHEMICALS
FURNITURE
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84 A
THE CHEMICAL RUBBER CO. ·
information, circle
ANALYTICAL CHEMISTRY
HANDBOOK
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LABORATORY
OF CHEMISTRY
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14. O H I O
SUPPLIES
A N D PHYSICS
Card, nage
65 A
I
Humidity Indicators. Six-page cata log gives design and construction de tails on the company's line of humidity indicators, recorders, and controllers. Includes photographs. Serdex, Inc. L-26
