Can Your Gas Suppliers Match Our Performance! in High-Pressure Cylinders •
calibration
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made to order in cylinders con taining from 10 to 200 cubic feet— 1 to 20 trace or minor components —parts per billion to percent con centrations—"make" tolerance ±10% and analysis accuracies from ± 5 % to ± 1 % of the component value •
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c.p. grade gases
seven individual from stock
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SCOTT RESEARCH LABORATORIES, Inc.
Perkasie, Penna. (215) 249-3526
San Bernadino, California (714) 887-2571)
In addition . . . testing of motor vehicles and industrial pollution control devices. Manufactur ing of auto exhaust analysis and sampling systems, driver aid for dynamometer test driv ing and controlled atmosphere test chambers. Circle No. 167 on Readers' Service Card 152 A
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ANALYTICAL CHEMISTRY
MANUFACTURERS' LITERATURE
ENGELHARD
has Platinum labware for every purpose
Liquid Scintillation. Characteristics of ambient liquid scintillation counting are described in application data sheet number NI-8104. Potential problems and their solutions are discussed, as well as simplified methods of cocktail prepa ration and the advantages of room-tem perature operation over refrigerated systems. Beckman Scientific and Proc ess Instruments Division, 2500 Harbor Blvd., Fullerton, Calif. 92634 601 Nuclear
Teaching
Equipment.
Engelhard is constantly updating its platinum, iridium and rhodium lab ware to keep up with technological advances—offering you the most complete selection of lab ware, and also the most advanced.
A
Take Engelhard Crucibles for example:
25-page laboratory guide on the Educa tor Series modular nuclear teaching in struments describes over 20 instru ments and many experiments. These AEC-compatible instruments include preamplifiers, pulse-shaping amplifiers, single channel pulse height analyzers, timing discriminators, and coincidence units. Canberra Industries, 50 Silver St., Middletown, Conn. 602
Standard form crucibles—have an Engelhard exclusive... All are hand hammered minimizing fatigue and stress cracking.
Ό
Polygon form—have flat gripping surfaces for more secure nano7/ng...have built-in pouring spouts and flat bottoms.
Gas Chromatography. A 16-page price list of this company's gas chroma tography systems, accessories, and supplies lists order numbers, quantities, and prices for more than 325 items. Specify Bulletin 410P. Packard In strument Co., Inc., 2200 Warrenville Rd., Downers Grove, 111. 60515 603
Trilay® constructionis a new platinum metal composite material for crucibles. It inhibits formation of large crystalscrucibles last longer and are stiffer and easier to clean.
Infrared Spectrometry. Data Sheet 023 describes the use of KBr, TlBr, and Csl as pressed pellet powders for solid phase infrared spectrometry and lists prices for the powders. Harshaw Chemical Co., 1945 E. 97 St., Cleve land, Ohio 44106 604
Ό j^iEulEii^^
LDH Electrophoresis. The procedure for separation and staining of LDH electrophoresis is the subject of Techni cal Bulletin 144. Detailed information on amounts and types of reagents and stains is given in this booklet. E-C Ap paratus Corp., 222 S. 40 St., Philadel phia, Pa. 19104 605 Infrared Accessories. Heated and Pyrex gas cells are featured in Bulletin 7000-62 which presents infrared gas sampling accessories manufactured by this company's London subsidiary. Beckman Scientific and Process Instru ments Division, 2500 Harbor Blvd., Fullerton, Calif. 92634 606
Platinum 3'/4% Rhodiumrecommended for high temperature fusions and ignitions.
Pure Iridium and Pure Rhodium Crucibles —suggested for melting and other high temperature applications where platinum or platinum alloys cannot be used.
Other Engelhard platinum implements and equipment for the laboratory include: dishes, beakers, trays, tongs, and special apparatus to order. For complete information, including catalog and data sheets, write Baker Platinum Division.
ENGELHARD I
N
D
U
S
T
R
I
E
BAKER P L A T I N U M
S
.
I
N
DIVISION
113 Astor Street, Newark. New Jersey 0 7 1 1 4
Circle Na. 130 on Readers' Service Card
C
MANUFACTURERS' LITERATURE Galileo Polarimeter $512.
Vibrating
Reed
Electrometer.
A
6-page brochure contains information on the operation, features, applications, and accessories of the Model 401 solid state Vibrating Reed Electrometer. This instrument will detect signals of 10-" A, 5 Χ 10"1β coulmb, and 2 X 10-5 V. Cary Instruments, 2724 S. Peck Rd., Monrovia, Calif. 607
Seconds from now you'll have an accurate reading from Galileo's Polarimeter and Refractometers
Infrared Analysis. This company's London subsidiary manufactures a line of attenuated total reflectance units and accessories for infrared spectrome try which is described in Bulletin 7000-08. Beckman Scientific and Proc ess Instruments Division, 2500 Harbor Blvd., Fullerton, Calif. 92634 608 Chemicals. This 80-page 1967 catalog lists price, quantity, and purity for over 350 chemicals, including perchloric acid mixtures, eerie salts, phenanthrolines and bipyridines, primary standards, and oxidation-reduction indicators. G. Frederick Smith Chemical Co., 867 McKinley Ave., Columbus, Ohio 43223 609
3alileo Refractometers available from $430. Model illustrated $540.
The Galileo Polarimeter features com pact design for easy and comfortable operation. Inclined focusable eye piece lets operator alternate between field and graduated scale observation. The analyser with two parts field divi sion is always adjustable independent of tube length. Thermometer checks environmental temperature. The Gali leo Polarimeter features a built-in so dium vapor light source as standard equipment. Speed and accuracy a r e built into every Galileo ABBE Refractometer. The refractive index scale between 1.300-1.700 gives direct reading of 3rd decimal place, estimates to fourth. Continuous chromatic com pensator permits use with white light ...accurately determines chromatic dispersion. Thermometer equipped to check water temperatures. Ideal for foods, edible oils, perfumes, paints, pharmaceuticals, essential oils and plastics. We'll be happy to send you our illus trated catalog...or to quote you on your particular needs.
G GALILEO CORPORATION OF AMERICA INC. 18 E. 5 3 r d St.. New York City
Circle No. 44 on Readers' Service Card
Solutions. An 8-page pamphlet dis cusses techniques for determining the concentration of solutions. The topics in "Physical Chemistry Review" No. 0 and MC7-11 include freezing point, vapor pressure, osmotic pressure, and boiling point. Advanced Instruments, Inc., 45 Kenneth St., Newton High lands, Mass. 610 Infrared Accessories. The liquidsampling accessories for infrared spec trophotometers described in Bulletin 7000-42 are products of this company's London subsidiary. Beckman Scientif ic and Process Instruments Division, 2500 Harbor Blvd., Fullerton, Calif. 92634 611 Precious Metals. Technical Bulletin No. 89 lists all the purities available in gold, gold alloys, silver, silver alloys, and platinum. Semi-Alloys, Inc., 20 N. MacQuesten Pkwy., Mount Vernon, Ν. Υ. 10550 " 612
Rosemount Baths maintain stable temperatures for the most critical calibrations Rosemount c a l i b r a t i o n baths are de signed to meet some of the toughest temperature calibration requirements ever encountered. Extreme stability and uniformity, wide temperature range, fast temperature change and operating con venience ensure precise sensor calibra tions. There are three variable temperature models and a constant temperature ice bath. A variety of coolants and bath me dia are used for set points from -250°F to + 7 5 0 ° F. Calibration zones are large and unobstructed. Uses include calibration of tempera ture sensors, determination of tempera ture coefficients of temperature-sensi tive devices, and experiments where ex treme temperature stability is essential. Full information and complete tech nical data furnished on request.
SPECIFICATIONS Model 910A Range
- 5 0 to +500° F
Model 913 -250 to +750°F
Model 91 OK -250 to +750°F
Model 911
Stability ±0.015°F ±0.010°F ±0.015°F ±0.002°F
Column Chromatography. Bulletin 1166 describes an adjustable column de signed for ascending, descending, or recycling column chromatographic ap plications. Plungers and removable ex tenders allow the column to be adjusted from its maximum length to zero. Kontes Glass Co., 141 Spruce St., Vineland, N. J. 08360 613
Coolant
Dry ice
LN2
Various liquids
Ice
ROSEMOUNT
REC
ETI E N G I N E E R I N G
COMPANY 4900 West 78th Street Minneapolis, Minnesota 55435
DIVISION
Circle No. 82 on Readers' Service Card
VOL. 39, NO. 4, APRIL 1967
·
153 A
MANUFACTURERS' LITERATURE
a spectrum shifter of superior performance for your liquid scintillation counting requirements... choose the best by test* Pilot Chemicals' bis-MSB, p-bis-(o-Methystyryl)-benzene, is a new fluor developed as a replacement for such older materials as POPOPanddimethyl-POPOP. It surpasses them in . . . • Solubility • Pulse Height • Dissolving Speed • Ease of Handling When counting highly quenched samples, one has the option of dissolving much greater quantities of bis-MSB than is pos sible with other shifters. •Kobayashi, Y., Anal. Chem., 38,1240 (1966) Copy on request
You pay no more for bis-MSB.
Τ
Dept. A-622
Plastic Labware. This 128-page, illus trated catalog for 1967 offers a variety of plastic labware, including bottles, containers, trays, pumps, and funnels. Dynalab Corp., P. 0. Box 112, Roches ter, Ν. Υ. 14601 614 Biochemicals. This company's 1967 100-page catalog lists prices for a wide variety of biochemicals, including amino acids, enzymes, peptides, pro teins, and purines. Request Reference Guide and Price List Number 134. Mann Research Laboratories, Inc., 136 Liberty St., New York, Ν. Υ. 10006 615
Countercurrent Bibliography: Inor ganic. Technical Bulletin 117 gives ab stracts of 23 papers in which countercurrent distribution was used to sepa rate inorganic materials. E-C Appara tus Corp., 222 S. 40 St., Philadelphia, Pa. 19104 616 Thermopiles. A 6-page foldout bro chure describes Flexible Cable Thermo piles which measure subtle changes in temperature from the cryogenic region up to 500° F. Details of construction and applications for these thermopiles are given. Science Products Corp., Route 46, Dover, N. J. 07801 617 Digital Display. Bulletin 7103 de scribes special features and specifi cations for digital display systems to be used with laboratory spectropho tometers. A series of modular com ponents provides an integrated read out, printout, or calculating capability to fit specific needs. Beckman Scien tific and Process Instruments Division, 2500 Harbor Blvd., Fullerton, Calif. 92634 618 High Temperature Furnaces. Cata log No. SF-12 describes ultra-high tem perature furnaces which provide sus tained temperatures from 2500° to 3000° C. Specifications and illustra tions are contained in this 6-page bro chure. Astro Industries, Inc., 606 N. Olive St., Santa Barbara, Calif. 93101 619
Looking for a better Balance?
CAHN MAKES IT!
The Cahn GRAM Electrobalance has a platinum band instead of knife edges, for better performance and reliability. No routine maintenance to remember... or forget. So rugged and immune to its envi ronment, you can use it where you need it; so stable it is used for long term experi ments; and so well built it is used in high vacuum and corrosive atmospheres. It has earned a reputation for reliability in thousands of laboratories. So easy to use that anyone can be trusted to use it. So fast that no one will want to use anything else. Complete weighings take a fraction of a minute and the Electrobalance reads directly in milli grams or micrograms. You can weigh small samples with a precision of one-tenth microgram (10"7 grams), weigh samples up to one gram. Eleven ranges let you use this one balance for a variety of tasks which previously required several different instruments. Looking for a better balance? Get a Cahn GRAM Electrobalance.
PILOT CHEMICALS,
INC.
36 PLEASANT ST., WATERTOWN, MASS. 02172
Circle Να. 1Ε5 on Readers' Service Card 154 A
·
ANALYTICAL CHEMISTRY
Laboratory Equipment. This 81page, illustrated catalog of laboratory equipment features Fiberglas fume hoods, glove boxes, carts, and Kjeldahl apparatus. Diagrams, specifications, and prices are included. Labconco Corp., 8811 Prospect, Kansas City, Mo. 64132 620
Phone or Write for details
CAHN
INSTRUMENT COMPANY
7500 Jefferson St., Paramount, Calif. 90723 (213) 634-1935 27 Essex Rd., Dartford, Kent, U.K., Ph. 21540 Circle No. 32 on Readers' Service Card See ACS Laboratory Guide for All Products/Sales Office
MANUFACTURERS' LITERATURE
BEL-ART PLASTIC
for
safety products TîetoÎ WITH SNAP-ON CAP à
Eye injuries treated on the spot . . . fast and effectively. Just apply pressure on flexible bottle. Can be used in stand ing or supine position. Completely redesigned . . . a captive snap-on cap keeps cup clean and ready for use. The side air-vent, below the cup, acts as a valve for air re-fill of free space in the bottle. This prevents draw-back of contaminated wash into bottle. In two sizes . . . 16 oz. and 32 oz.
at your
laboratory
supply
Send for our c a t a l o g supplement
house.
A-4
Balances. High sensitivity, precision analytical balances feature digital readout from 0.0000 to 1.1000 gram. Weights above 1 gram to a maximum of 200 grams can be obtained with any standard set of weights. Request liter ature on Models 340-D and 640-D. Voland Corp., 27 Centre Ave., New Ro chelle, Ν. Υ. 10802 625
Electrophoresis. Procedure for sepa ration and staining of serum glycopro teins is the subject of Technical Bulle tin 143. E-C Apparatus Corp., 222 S. 40 St., Philadelphia, Pa. 19104 627
listing
many NEW items . . . ;'ust off the press.' Write Dept.
Thermocouple Kit. This kit contains all components necessary to construct thermocouple probes for cryogenic through high temperature service. Micro-miniature, standard, and heavy duty thermocouples can be built. Re quest Product Bulletin 695. Omega Engineering, Inc., P. 0. Box 47, Springdale, Conn. 06879 624
Chronoamperometry. Application Data Sheet EC-8109 describes a potential-sweep chronoamperometry method which uses the Electroscan 30 to detect fumaric acid that has been added to foods as an acidulant. Beckman Scientific and Process Instruments Division, 2500 Harbor Blvd., Fullerton, Calif. 92634 626
I
Avoid delay—hang this half gallon bottle within easy reach above eye level. Gravity feed in sures that eye is cleaned with wash at a fixed pressure. Impossible for high pressure j e t to strike the eye. Available
Fluoride Analysis. Specifications for the Anafluor Continuous Fluoride Ana lyzer are included in an illustrated 6-page brochure, Specification 17S4000. Fischer & Porter Co., 142 Jacksonville Rd., Warminster, Pa. 18974 622
Latest Scientific Facts/ 47™ EDITION
CRC
HANDBOOK OF
CHEMISTRY AND
PHYSICS
Infrared Spectrometry. Internal re flection spectrometry (ATR) attach ment, Model 7, is discussed in Data Sheet No. 18. Wilks Scientific Corp., South Norwalk, Conn. 06854 623
POLYETHYLENE EYE WASH BOTTLE
Polyethylene GRAVITY EYE W A S H
Micro-Volume Gas Valves. Microvolume valves for sampling and switch ing operations in gas chromatography are described in 4-page Bulletin 6602. Applications, illustrations, price list, and ordering instructions are included. Carle Instruments, Inc., 532 S. Rose St., Anaheim, Calif. 92805 621
for your FREE copy.
BEL-ART PRODUCTS PEQUANNOCK, N. J. 0 7 4 4 0 Circle No. 111 on Readers' Service Card
Infrared Spectrometry. Data Sheet 017 lists prices for the company's NaGl and KBr infrared windows. Harshaw Chemical Co., 1945 E. 97 St., Cleve land, Ohio 44106 628
l
'»-iVsias
Make sure you have ready access to t h i s v a l u a b l e r e f e r e n c e ! Here is t h e latest e d i t i o n of t h e w o r l d ' s " m o s t r e a c h e d f o r " scientific s o u r c e book for over half-a-cent u r y ! This b r a n d new v o l u m e of t h e c o m p l e t e l y revised and ex p a n d e d h a n d b o o k brings y o u : • Over 1800 pages of u p d a t e d c h e m i s t r y , physics a n d m a t h e matical tables! •
110 newly added pages!
•
Up-to-date data o n : G r a v i m e t r i c F a c t o r s — Ele mentary particles—Magnetic Materials — Electron A f f i n i t i e s — H e a t Capacity of A q u e ous S o l u t i o n s — D i m e n s i o n less Groups . . . a n d M u c h More:
Get your storehouse tion
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of
this
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$17.50 each
(Outside U.S.A. add 50c)
CRC THE
C H E M I C A L R U B B E R CO. 2310 Superior Avenue C l e v e l a n d , Ohio 4 4 1 1 4
Circle No. 33 on Readers' Service Card V O L . 3 9 , N O . 4 , APRIL 1 9 6 7
·
155
A
Polarograms
in seconds
MANUFACTURERS' LITERATURE HARSHAW
Nuclear Research Equipment. Cata log No. 1000, 98 pages, covers this com pany's line of ion sources, scattering chambers, semiconductor detectors, and electronic instrumentation. Photo graphs, specifications, and circuit sche matics are included, as well as ordering information and prices. Ortec Inc., 200 Midland Rd., Oak Ridge, Tenn. 37830
Crystal Products
Performance tested crystals for use as gamma radiation detectors, IR windows and UV components.
629 Interference Contrast Microscopy.
A
4-page reprint by F. Gabier and F. Herzog titled, "A New Interference Contrast, Equipment for Work in Transmitted Light" discusses the appli cation of interference contrast equip ment to transmitted light microscopy. William J. Hacker & Co., Inc., P. O. Box 646, West Caldwell, N. J. 07006
HARSHAW
Infrared Optical Materials
The Harshaw Chemical Co. ri.ohuiH.n>M!iiniuu
630
Company Periodicals Requests for copies of the following publications, catalogs, etc., should be sent directly to the address shown. Business or professional letterheads are requested. Polarography need not be slow with t h e new C H E M T R I X Single-Sweep Polarographic System. You get polarograms in seconds, which can be stored on face of a CRT up to one hour. Other advantages include: 1. Triangle sweep for cyclic voltammetry. 2. Polarographic mag nification for peak isolation. 3. Derivatives for sep arating peaks. 4. Electronic trigger ing from drop fall —start scan at de sired point in drop life.
highly versatile * easy to use CHEMTRIX Type SSP-1, consisting of two CHEMTRIX Polarographic Plug-In Units (Type 300 Amplifier and Type 200 Time-Base) and one TEKTRONIX Type 564 Storage Oscillo scope, factory tested as a polarographic system. $2685 CHEMTRIX Amplifier and Time-Base Units are available separately for those who already have the TEKTRONIX Type 564 Oscilloscope. Type 300 Polarographic Amplifier Unit Sensi tivity—0.01 to 100 microamps/div in 13 steps. Operating Modes—normal, first, and second derivative. Measurement Range — l x l ( H ! to l x l 0 - « molar and up to l x l ( H > molar with anodic stripping. $795 Type 200 Polarographic Time-Base Unit Start Potential—adjustable from + 2 . 0 v t o —2.0v. Cell Scan Potential Ranges—0.5v, lv, 2v. Delay Time—adjustable from 1 sec. to 11 sees. Sweep Modes—sawtooth or triangle, single or repetitive. Sweep Range—0.01 sec/div to 1.0 sec/div in six steps. $890 U.S. Sales Prices F.O.B. Factory
CHEMTRIX, INC. Instrumentation for Science P. 0. Box 725
Beaverton, Oregon 97005
(503) 648-1434 Circle No. 125 on Readers' Service Card
156 A
·
ANALYTICAL CHEMISTRY
Spex Speaker, Vol. XI, No. 4. The December issue contains a 9-page arti cle on "Raman Spectroscopy Revisited" by Professor Alfons Weber. Spex In dustries, Inc., 3880 Park Ave., Metuchen, N. J. 08841 Technical Bulletin, Vol. VII, No. 3. Two of the topics discussed in this issue are the hydrogenolysis of beta-ketoesters over platinum catalysts and an xray fluorescent method for determining copper in silver-copper alloys. Ab stracts of some patents relating to the platinum metals and gold are included. Engelhard Industries, Inc., 113 Astor St., Newark, N. J. 07114 Fritzsche Library Bulletin, Vol. 10, No. 13. This 13-page bulletin is an index to Vol. 10, January to December, 1966, of the Fritzsche Library Bulletin. Fritzsche Brothers, Inc., 76 Ninth Ave., New York, Ν. Υ. 10011 Gas-Chrom Newsletter, Vol. 8, No. 1. Details are included on «-hydroxy acids and methyl esters, barbiturates, TLC spray reagents, and gas chromatogra phy column packing material available from the company. Applied Science Laboratories, Inc., State College, Pa. 16801 Fritzsche Library Bulletin, Vol. 11, No. 2. This 6-page bulletin lists current lit erature on essential oils, isolates, and aromatic chemicals. Fritzsche Broth ers, Inc., 76 Ninth Ave., New York, N. Y. 10011
Harshaw infrared materials transmit to 70 microns. Available as blanks or polished to your finished specifications.
HARSHAW
IR Pressed Pellet Powders
KBr, Csl, and TIBr, IR Pressed Pellet Powders are suitable over a wide spectral and refractive index range.
The Harshaw Chemical Co.
Λ HARSHAW
Silver Chloride
This unique IR material is insoluble in water, transmits out to 22 microns, available as windows only .016" thick.
™s£S HARSHAW
Performance Tested Crystals
Crystals for use as X-ray monochromators, X-ray detectors, reststrahl plates, and refracting components.
The Harshaw Chemical Co. • OmlNtl)la4till.nM21IHI-l3ll
Your inquiries for complete information are invited.
The Harshaw Chemical Co. 1945 East 97th St. · Cleveland, Ohio 44106 · Phone 216 721-8300
Utrecht, Netherlands —Harshaw-Van Der Hoorn N.V. Frankfurt, W. Germany— Harshaw Chemie GmbH Circle No. 50 on Readers' Service Card
MANUFACTURERS' LITERATURE
A PHOTOVOLT
pH METER FOR EVERY PURPOSE ROUTINE
Arcs and Sparks, Vol. 12, No. 1. Feature articles on two spectroscopists, Dr. William F. Meggers and Dr. Harrison M. Randall, are included in this issue. Ultra Carbon Corp., P. 0. Box 747, Bay City, Mich. The INFOrmer, No. 12, 1967. The CRS-50 digital computer system for processing gas chromatography data is discussed, as well as other company products. Infotronics Corp., 7800 Westglen Dr., Houston, Texas 77042
Model 85
GENERAL PURPOSE
Petroleum Peaks, January, 1967. This edition describes new developments in trace analysis by gas chromatography, including helium and phosphorus detectors. Varian Aerograph, 2700 Mitchell Dr., Walnut Creek, Calif. Molecules
Model 115
HIGH-PRECISION PUSHBUTTON
and
Microwaves,
No.
Microwaves, October, 1966. The initial issue of this newsletter describes the company's bench-top freeze dryer, water bath shaker, pH controller, and semiautomated fermentor. Case histories, laboratory hints, and company news are included. New Brunswick Scientific Co., 1130 Somerset St., New Brunswick, N. J. 08903 The Laboratory, Vol. 35, No. 1.
Model 111 RUGGED PORTABLE
Model 126 EXPANDED SCALE
Model 180 Stocked by laboratory supply houses
PHOTOVOLT CORPORATION
1115 Broadway.New York, N.Y. 10010 write for
bulletin
1.
The first issue of this new journal discusses the structural information obtained from the microwave spectrum of p-chlorotoluene. Microwave Division, Hewlett-Packard Co., 1501 Page Mill Rd., Palo Alto, Calif. 94304
The
feature article concerns advances in headache treatment. Other topics include the company's thermogravimetric analysis equipment, atomic absorption spectrophotometer, and automatic chloride titra tor. Fisher Scientific Co., 711 Forbes Ave., Pittsburgh, Pa. 15219 Dust Topics, Vol. 4, No. 1. This issue features two articles on air pollution. One article discusses a method for the determination of nitrogen dioxide and nitric oxide. Another tells how one city solved the problem of odor caused by hydrogen sulfide and ammonia evolving from a sewage treatment plant. Gelman Instrument Co., P. O. Box 1448, Ann Arbor, Mich. 48106 Solutions Newsletter, February, 1967. The first issue of this monthly newsletter features articles on the clinical use of LDH isoenzymes and the separation of amino acids by instant thin layer chromatography. Gelman Instrument Co., 600 S. Wagner Rd., Ann Arbor, Mich. 48106 Ozone Newsletter, Vol. 5, No. 1. This publication reports recent developments involving ozone and ozonides. Abstracts of recent papers on ozone are included. Welsbach Corp., Westmoreland and Stokley Sts., Philadelphia, Pa.
(Left) Carbon Determinator, (Right) Sulfur Determinator
CARBON & SULFUR DETERMINATORS BY
THE MOST AREDEPENDABLE EASIEST TO OPERATE LEAST EXPENSIVE MOST VERSATILE
Hot tube combustion is still the simple, fail-safe way to make carbon and sulfur tests in a hurry. If you are interested in the analysis of—
IRON A N D STEEL P E T R O L E U M CATALYST S T A I N L E S S ALLOYS ORGANICS FOUNDRY SANDS . . . let us send you detailed information on the Dietert-Detroit Two Minute Carbon Determinator and Three Minute Sulfur Determinator. HARRY
W. DI E T E R T
CO.
9 3 3 0 Roselawn · D e t r o i t 4 , M i c h . Area Code 313 · Phone: WEbster 3-9790 Send me free 16-page Sulfur-Carbon
Bulletin
Name Com pa ny Address City
Circle No. 164 on Readers' Survice Card
VOL.
_State_ Circle No. 126 on Readers' Service Card 39, NO. 4, APRIL 1967
·
157 A
