MANUFACTURERS' LITERATURE
Vertical Gel Electrophoresis. T e c h n i cal Bulletin 128, 16 pages, shows graphi cally the techniques for using this lab oratory instrument. E-C Apparatus Corp., 755 St. M a r k s St., Philadelphia, Pa. 19104 601
w h a t one instrument gives you an amino acid and nucleic acid analyzer w i t h a sensitivity of 5x10 1 0 moles? i.hemiiewf VDASVDQVXVC
Fluorine Compounds. "Ozark's A n nual Shelf-Clearing L i s t , " 4 pages, is a collection of nonroutine fluorine com pounds. O z a r k - M a h o n i n g Co., 1870 S. Boulder, Tulsa, Okla. 74119 602 Gas Chromatographs. Catalog S54411 discusses M o d e l G C - 3 A L for analy sis of gas and l i q u i d samples having l o w boiling points. Catalog S54-413 fea tures M o d e l G C - 3 A H for high tempera ture analysis. Catalog S54-415 de scribes M o d e l G C - 3 A F for exclusive use w i t h hydrogen flame ionization detec tor. Catalog S54-417 presents M o d e l G C - 3 A E for exclusive use w i t h electron capture detector. AU catalogs are four pages. Shimadzu Seisakusho L t d . , For eign Trade Dept., 18 N i s h i n o k y o - K u w a baracho, Nakagyo-kn, K y o t o , Japan 603 Indicator Papers, Reagent Papers, and Test Papers. This 16-page bro chure presents the indicator, reagent, and test papers manufactured b y Macherey-Nagel & Co., D u r e n , Ger many. These products are now avail able i n the U . S. Gallard-Schlesinger Chemical M f g . Corp., 584 M i n c o l a Ave., Carle Place, L . Ι . , Ν . Υ . 11514 604 Filter Paper Chart. T h i s 8 V 2 " x 1 1 * c h a r t shows various filter paper sizes for a variety of filtering devices. Reeve Angel, 9 Bridewell Place, Clifton, N . J. 07014 605 Organic Fluorine Compounds. Cata log F-16, 32 pages, lists nearly every available fluoro-organic compound and contains a four-page section on highly fluorinated inert fluids. Pierce Chemi cal Co., P. O. Box 117, Rockford, 111. 61105 6O6
The JLC-3BC i s a d u a l - d e t e c t i o n * amino acid analyzer w i t h a s e n s i t i v i t y of 5 χ 1 0 " 1 0 moles highest on t h e market t o d a y ! N e a r e s t available s e n s i t i v i t y — m e r e l y 5 χ 10 " moles is found only in i n s t r u m e n t s c a s t i n g t w i c e the low price of the JLC-3BC. ' UV detector for proteins and nucleic acids-visible Sight detector for amino acids.
THE 1LC-3BC ALSO OFFERS THESE 7 EXCLUSIVE FEATURES: • 10-second sample application rime... other instruments average about lOminutes. • Constant eiuent flow rate guaranteed... precision mechanical valves eliminate the bubble and backspill common t o other instruments. • Excellent stability—± 2%/lf) hours... superior pump e n g i n e e r i n g provides effi cient long-term laboratory operation. • Accurate quantitative analysis is simple to perform.., linear scale in the hrgh-sensitivity range affords a much simpler and more accurate quantitative analysis than the logarithmic scale alone. φ Extremely high reproducibility — 2?&... with its constant-flow pump and highsensitivity amplifier, plus reaction bath temperature c o n t r o l , i t outperforms a l l others i n reproducibility. • Eluents contact Teflon and glass only... ordinary instruments with pumps of rubber, metal or other materials are more suscep
tible to chemicals. • Modular design... the J L C - 3 B C consists of separate and independent units f o r easy c o n t r o l and servicing.
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Sample: a m i n o a c i d mixture Sample volume.- 5 x l O - 1 0 moles Eiuent: 0 . 3 5 N N a - C i t r a t e buffer pH Temperature: 50°C. Fixed phase: A m i n e * A-5 O p t i c a / p a t h : 10 m m
5.28
JAPAN ELECTRON OPTICS LABORATORY CO., LTD. Marunouchi, Chiyoda-ku, Tokyo, Japan
Polarimeters. B u l l e t i n N o . 3, 4 pages, describes t w o new polarimeter models, SR-5 and SR-6. Polyscie.nce Corp., •909 Pitner Ave., Evanston, 111. 60602 607
JEOLCO (U.S.A.), INC. Application Centers at Medford, Massachusetts and Burlingame, California
JOEL
JEOLCO (EUROPE) SA j e Avenue de Colmar 92 Rueil-Malmaison,(Paris), France
JEOLCO (AUSTRALASIA) PTY. LTD. 1 Help Street, Chatswcod Sydney, N S W . , Australia Circle Nt. SI on Readers' Service Card VOL
3 9 , N O . 1 4 , DECEMBER 1 9 6 7
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131
A
THERMOLYNE B^HEAT Π LIGHT Π MOTION
laboratory Apparatus for:
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MANUFACTURERS' LITERATURE Spectroscopy Laboratory. Bulletin 7119, 2 pages, describes Beckman's new instrument combining the D B and the Microspec spectrophotometers. The unit permits both ultraviolet and i n frared analyses. Beckman Instruments Inc., 2500 Harbor Blvd., Fullerton, Calif. 92634 608
furnace
a
heavy-duty
in a general
lab?
by the or
PINT
TANK-LOAD Scientific Products. This 12-page bul letin presents aids and equipment for the cytology laboratory. Scientific Products, 1210 Leon Place, Evanston, 111. 60201 609 Infrared Non-Contact Thermometers.
such
QUALITY
Illustrated bulletins 67-04 and 67-05, four pages each, describe the Infrascopes M a r k I and M a r k I I I . Barnes Engineering Co., Instruments Division, 30 Commerce Rd., Stamford, Conn. 06902 610
CORCO Reagent Acids and Ammonia meet or exceed the exacting specifications demanded by analytical lab oratories, and the pharmaceu
TYPE 1700 FURNACE ~ is a rugged bench furnace well fitted to heat treating chores, BUT, it is so widely useful and adaptable that it answers large-requirement needs in all labs: annealing, ignitions, fusions, drying. MANY CONTROL OPTIONS — Non-indicating automatic control has proportioning and cold junction compensation. Indicating Capacitrol is automatic, available with or without proportioning, for standard 1093C (2000F) or 1177C (2150F) models. Optional manual control. CONVENIENT DOOR — permits opening lower section only for inspection, or both doors for fully open; Minimizes heat losses. FAST HEATING — to 760C (1400F) in about 90 minutes; 6-inch efficient insulation. TWO CHAMBER SIZES — 9 Va" W χ BW Η χ 13V2" or 18" deep. Accessory shelf doubles chamber capacity. Furnace Only prices start at $332.00
/\/e€4A CATALOG 6 7 Write today for your free copy 48-Page catalog shows expanded line: furna ces, controls, hot plates, mag. stirrers. Stir - Plates, Stir i^ ••*• Lights, Dri-Baths, in"*" , cubators, lab-lights, meters. Owner * V *-• Built furnace acs „*' cessories.
α subsidiary of Ritrer Pfaudler Corp. Circle No. 74 on Readers' Service Card 132 A
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ANALYTICAL CHEMISTRY
Pure Chemicals. Catalog N o . 7 is a 38-page listing of analytical standards for research and gas chromatography. Lachat Chemicals Inc., 20200 Ashland Ave., Chicago Heights, 111. 60411 6 1 2 Resistance Thermometry—A
Review.
This 18-page illustrated booklet (Re print A l . 2102RP) discusses both dc and ac methods of resistance thermom etry. Leeds & N o r t h r u p Co., 4901 Stenton Ave., Philadelphia, Pa. 19144 613
tical,
precious metal, elec
tronic and atomic industries. Whether your need is for a reagent acid or ammonia in pint bottles or in large quan tities for process use, Corco can supply you from stock. It makes good sense to buy reagent chemicals from a com pany whose total production is high quality, specification grade chemicals.
Eppendorf Push-Button Microliter Pipets. This eight-page bulletin, B R 174, discusses precision-made microliter pipets, w i t h disposable tips, for dis pensing exact liquid volumes from 5 to 1000 lambda. Brinkmann Instruments Inc., Cantiague Rd., Westbury, Ν . Υ . 11590 614
We also make buffer solu tions, volumetric solutions, electronic chemicals, Karl Fischer solutions and reagentgrade solvents.
.*
THERMOLYNE CORPORATION 25SS KERPER BLVD. DUBUQUE, IOWA 52001 U.S.A.
Organic Silicon Compounds. Catalog S-3, 12 pages, lists the available organosilicon compounds and also has two pages on silyation reagents and solvents. Pierce Chemical Co., P. O. Box 117, Rockford, 111. 61105 611
Specialty Gas Catalog. This revised 72-page catalog of specialty gases and equipment describes more than 170 specialty gases and gas mixtures, i n cludes a table of the low-temperature physical properties of gases, and a new section on radioactive gases. A i r Prod ucts and Chemicals, Inc., Specialty Gases, P. O. Box 538, Allentowii, Pa. 615
CORCO
CHEMICAL CORPORATION Manufacturers of Reagent and Electronic Chemicals
Tyburn Road & Cedar Lane, Fairless Hills, Pa. 19030 'Phone: (215) 295-5006 Circle No. 32 on Readers' Service Card
M A N U F A C T U R E R S ' LITERATURE OPTICAL
INFRARED
MATERIALS
Your infrared transmission requirements can be filled by one of the many Harshaw infrared mate rials which transmit to 70 microns. Available as blanks or polished to your finished specifications. W r i t e f o r literalura.
HARSHAW
The Harshaw Chemical Co. Division of Kewanee Oil Company 1945
EAST 97 th ST. - CLEVELAND, O H I O 4 4 1 0 6 PHONE 2 1 0 - 7 2 1 - 8 3 0 0
PELLET
IR P R E S S E D
POWDERS KBr, Csl, and ΤΙ Br, IR Pressed Pelfet Powders are suitable over a wide spectral and refractive index range. Wrife for lîferaiure.
HARSHAW
The Harshaw Chemical Co. Division of Kewartee Oil Company Ï945
EAST?7ih ST. · CLEVELAND, O H I O 4 4 1 0 0 PHONE 2 1 0 - 7 2 1 - 8 3 0 0
60% BIGGER 70% BETTER
Pressure-Lok Syringes. Bulletins A B 108 and AB-109 describe Pressure-Lok syringes for sample injection i n liquid and gas chromatographs and related instruments. Tracor, Inc., 6500 Tracor Lane, Austin, Texas 78721 616 Heavy
Oxygen
Enriched
Materials.
This 12-page brochure lists the O 17 and O 18 water and gases, the O 1 8 labeled compounds that are available, and se lected and general references on oxygen isotopes. Miles Laboratories, Inc., Re search Products Dept., Elkhart, I n d . 46514 617 Chromatography/Lipids. This 19page catalog lists gas, thin layer, and column chromatography supplies and high-purity lipids. Supelco, Inc., P. O. Box 628, 146 S. Water St., Beliefonte, Pa. 16823 618
than the MC&B catalog you now have
Γ Μ
WiCK
STICK
Links TLC with IR spectra. Countless hours of time can be saved in identifying thin layer chromato graphic samples by infrared analysis. W r i t e f o r literature.
HARSHAW
Biomedical Instrumentation. This 40-page digest, "Instruments for Medi cine," describes and illustrates instru ments for the medical and life sciences. Beckman Instruments, Inc., 2500 Har bor Blvd., Pullerton, Calif. 92634
ivK^ht «i^rtfsofii
619
The Harshaw Chemical Co.
Division of Kewanee Oil Company 1945
EAST 97th ST. · CLEVELAND, OHIO 4 4 1 00 PHONF. ?1Λ-7">1-8300
INFRARED
LENSES
Custom I.R. lenses are available cut from blanks of NaCI, KBr, BaF2, T-12, Csl, and other Harshaw materials. Write for lileralur*
HARSHAW
The Harshaw Chemical Co. Division of Kewanee Oil Company 1945
EAST ?7tfi ST. · CLEVELAND, OHIO 4 4 1 06 PHONE" 2 1 6 7 2 1 - 8 3 0 0 a
..,,,»•
MATERIALS ULTRAVIOLET
ANU
Products f o r Science. This is a 16page illustrated catalog describing se lected laboratory equipment. ColeParmer Instrument and Equipment Co., 7330 N . Clark St., Chicago, 111. 60626 620 Constant
Temperature
Circulators.
Bulletin B R 165-B, 34 pages, presents Lauda constant temperature circulators and baths. Both standard and new models and optional new electronic ac cessories are offered. Brinkmami I n struments, Inc., Cantiague Rd., Westbury, Ν . Υ . 11590 621
COMPONENTS Η . Ι Ϊ Ο Ι . Ι Λ I inn π H e r c i - i . •• I. :l.π ii!ju_!'_ !!'_._•·._! t o transmit a minimum of 50% for a 2 mm path, at 121 6 £_ Lenses, prisms, and polarizers tailored t o your specifications are available.
HARSHAW
The Harshaw Chemical Co.
Division of Kewanee Oil Company CRYSTAL-SOLID STATE TJEr-T.
1945 EAST 97th ST. · CLEVELAND. O H I O 4 4 1 0 6 PHONE 2 1 6 - 7 2 1 - B 3 0 0
Your inquiries for complete information are invited. THE HARSHAW CHEMICAL COMPANY CHYSTAL-SOLID S T A T E D I V I S I O N
1945 East 97th St. · Cleveland, Ohio 44106 · Phone 216 721-830D Utrech, Netherlands—Harshaw Chemie N.V. Frankfurt, W. Germany—Harshaw Chemie GmbH Circle No. 48 on Readers' Service Card
Laboratory Thermometers. Catalog 680, 28 pages, presents a complete line of laboratory thermometers. Over 1000 instruments are available including those for both general and precision use and special purpose types. Brooklyn Thermometer Co., 90 Verdi St., Farmingdale, Ν . Υ . 11735 622
This new laboratory chemical catalog is much bigger, better, easier-to-use, etc. AND — IT HAS A SPECIAL SECTION ON LABORATORY SAFETY AND — MC&B distributors are ready to deliver everything in the book. Ask your distributor for a copy or write today. MC&B, P.O. Box 85, East Rutherford, N. J. Send new MC&B Chemical Catalog Name-
Spectrometers. "Mossbauer Spec troscopy for the Serious Researcher" de scribes a constant acceleration drive capable of 60 cm/sec, a fast data ac cumulation system specialized to this application, and accessories. Austin Science Associates, Inc., P. O. Box 7728, Austin, Texas 78712 623
FirmAddressCity State, Z i p -
Circle No. 1ST on Readers' Service Card VOL. 39, NO. 14, DECEMBER 1967 ·
133 A
MANUFACTURERS' LITERATURE Sphingolipids. "Sphingolipids and Re lated Products" is a four-page brochure presenting synthetic counterparts of naturally-occurring lipids intended for research. Miles Laboratories, Inc., Elk hart, Ind. 46514 624 Notebooks. Patent protection and project control are the features de scribed i n this four-page bulletin on laboratory notebooks. Scientific Note book Co., 719 Wisconsin Ave., Oak Park, 111. 60304 625 Molecular Sieves. This 16-page bro chure discusses molecular sieves and also contains two nomographs for cal culating pressure drop i n beds of the material. W . R . Grace & Co., 101 N . Charles St., Baltimore, M d . 21203 626
Filters. Infratron interference filters for U V , visible, and I R wavelengths are discussed i n this 12-page booklet. I n frared Industries, Inc., P. O. Box 42, Waltham, Mass. 02154 627
Solutions, Vol. V I , N o . 3. This issue features new applications for electro phoresis and thin layer chromatogra phy. Gelman Instrument Co., 600 S. Wagner Rd., P. O. Box 1448, A n n A r bor, Mich. 48106 The INFOrmer, Issue N o . 13, Summer, 1967. This periodical discusses the company's computer systems. I t also presents an article on its new manufac turing plant at Austin. Infotronics Corp., 7800 Westglen D r . , Houston, Texas 77042
In the field or in the lab. Sargent's PB /PL pH meters work anywhere.
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. LabLog, N o . 3-67. This 12-page sup plement to Catalog 9 provides informa tion on balances, ultra-centrifuges, portable viscometers, and various other instruments and equipment. W i l l Sci entific, Inc., Box 1050, Rochester, Ν . Υ . 14603 Fritzsche Library Bulletin, Vol. 11, N o . 10. This periodical lists current litera ture on essential oils, aromatic chemi cals, perfume and flavor raw materials, and a special section on organoleptic problems and procedures. Fritzsche Brothers, Inc., 76 N i n t h Ave., New York, Ν . Υ . 10011 Instrument News, Vol. 18, N o . 1. A r ticles i n this issue discuss luminescence spectroscopy, spin decoupling, the iden tification of LSD, polymer solid crystal lization measurements, and other topics. Perkin-Elmer Corp., Norwalk, Conn. 06852 Ozone Newsletter, Vol. 5, N o . 2. A selection of ozone abstracts, a few briefs, and research reports are i n cluded i n this issue. Welsbach Corp., Westmoreland & Stokley Sts., Philadel phia, Pa. 19129
Ares & Sparks, Vol. 12, N o . 3. This issue salutes D r . M a r v i n W . Skougstad, who recently fulfilled his term of Presidency i n SAS, and D r . John Donovan Strong, Spectroscopist of the M o n t h . Brief summaries are given on the 18th Annual Mid-American Symposium on Spectroscopy, the X I I I Colloquium Spectroscopicum Internationale, and the first SOAP symposium. The Laboratory of Nuclear Medicine and Radiation Biology, Center for Health Sciences, U C L A , is the Labora-Story of the M o n t h . Ultra Carbon Corp., P. O. Box 747, B a y City, M i c h . 48706
Sargent's portable pH meters are rugged enough —with transistorized circuitry in a shockproof, waterproof case —to withstand rough field use. Yet these portable pH meters — with an absolute accuracy of ±0.05 pH and reproducibility of ±0.01 pH —perform to standards normally found in only the highest-priced instruments. There are two models of these pH meters to choose from. Both use the same instant-response taut-band suspension and differ only in their plug-in power packs. The Model PB uses mercury dry-cell batteries that normally give six months of operation. The Model PL has a zener-referenced, lineoperated power supply. These power packs are interchangeable, which is why you can use the PB or PL almost anywhere. Both the PB and PL pH Meters are easy to read to 0.02 pH on a large meter face. Both have only three operating controls: standardization, operation, and temperature compensation. And both will accommodate all commonly used electrodes. These portable pH meters are designed and manufactured by Ε. Η. Sargent & Co., so you know you can count on their perform ance to be ultra-reliable. The Model PB (battery-operated) is priced at $265. The Model PL (line-operated) costs $305. The interchangeable power packs are priced at $25 for the battery kit and $65 for the 115/230 vac, 50/60 cycle supply. Please call your Sargent man or write us for a demonstration of the PB or PL Portable pH Meter.
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SARGENT ® Scientific laboratory instruments, apparatus, chemicals. E. H. Sargent & Co. 4647 Foster Ave., Chicago, III. 60630
Chicago/Anaheim, Calif./Birmingham Cincinnati/Cleveland/Dallas/Denver Detroit/Springfield, N.J./Toronto, Canada
Circle No. 148 on Readers' Service Card VOL. 39, NO. 14, DECEMBER 1967
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135 A
