M A N U F A C T U R E R S * L I T E R A T U R E
Lab Furniture. A color sample book let and catalog describe an extensive line of laboratory furniture and metal casework available in a range of 16 colors. Duralab Equipment Corp. 212-649-9600 601 Research Catalog. Sixteen pages list research chemicals, syringes, spectro photometer cells, recorders, glassware, and lab lights. Bradford Scientific, Inc. 617-631-1145 602 Lock-in Amplifiers. Eight pages in troduce, describe, and illustrate lock-in amplifiers. Ithaco, Inc. 607-272-7640 603 Nuclear Computer System. Forty-one pages present in-depth operation and programming information for the HP 5406B modular computer-based multi parameter multichannel analyzer sys tem. The system is applicable any where radioactive isotopes are used or monitored. Hewlett-Packard Co. 415493-1501 604
Chromatograph Valve. Four pages in troduce the Model I X valve for chro matograph sampling and column switching in petroleum, petrochemical, and chemical process plants. The valve, for liquid or vapor samples, is basically a six-port, two-position, airactuated valve. Applied Automation, Inc. 918-336-0250 609
Inspect this new
Spectrophotometer Cells. Bulletin 2/71, 4 p, describes a new line of black, self-masking glass and quartz cell for use in spectrophotometers and other light measuring instruments. Hellma Cells, Inc. 212-544-9534 610
Research Microscope. Twelve pages describe and illustrate the Zetopan-M metallographic and semiconductor re search microscope. Facilities are in cluded for using the latest techniques of Namarski Interference contrast as well as Nomarski and Michelson interferometry for qualitative and quantita tive evaluation and quality control of microelectronic products and metallo graphic samples. Hacker Instruments, Inc. 201-226-8450 611
Culture Instrument and Shaker Baths.
Lab Presses. Bulletin 5901, 4 p, covers the company's lab presses which range from 1.4-ton manually operated units to 100-ton motorized hydraulic models. Beckman Instruments, Inc. 714-871-4848 605 Instrumentation. Four pages describe the MP-1036 instrument cabinet and power supply. Four new Series MP1700 operational amplifier manifolds are shown along with general specifica tions. Chemical instruments described include a polarographic analyzer, con trolled potential coulometer, and dual recording pH meter. McKee Pedersen. 415-937-3630 606 Electronic Microbalances. Bulletin 5900, 8 p, describes and gives operating specifications for the company's LM500, 600, and 700 microbalances, and the new LM-800 with its digital readout and built-in BCD output. Beckman Instruments, Inc. 714-871-4848 607 Lab Apparatus and Reagents.
Vol I I ,
No. 3, 40-p catalog contains infor mation on plasticware, circulators, melting-point apparatus, jacks and timers, stirrers and spinbars, and labware. J & H Berge, Inc. 201-561-1234 608
Bulletins 372 and 570 give information on the Mark II Nepheolostat, a small bench-top, continuous culture instru ment, and the Orbit shaker bath. LabLine Instruments, Inc. 312-345-7400 612
Then send for it! It's FREE This unique 56 page reference was designed to assist the Spectroscopist and researcher in se lecting the right solvent for each application. This book obviates the need to consult several refer ences as it contains complete information on usage, transmittance, absorbance, physical prop erties and MC&B specifications with over 300 charts and graphs. Do we pass inspection? If so, fill out the handy coupon and mail.
Ovens and Baths. Four pages describe selected samples of the company's ovens, incubators, water baths, con trolled temperature/humidity cham bers, and box-type muffle furnaces. Blue M Electric Co. 312-385-9000 613
Surface Area Analyzer. Four pages describe the Monosorb, a device for measuring the surface area of fine powders. The instrument provides di rect surface area readout. Quantachrome Corp. 516-671-0680 614
Multichannel Analyzer. Brochure de scribes the ND4420 multichannel phys ics analyzer, designed for single, dual, or multiparameter applications. The unit features a compiler, software con trol of 32 functions, three modes of data acquisition, and memory expand ability to 32K. Nuclear Data, Inc. 312-529-4600 615
U MANUFACTURING
CHEMISTS
Norwood, Ohio; Baton Rouge, La.; Raleigh, N. C; East Rutherford. N. J.; Los Angeles, Calif.
; MC&B MANUFACTURING CHEMISTS
|
I I
ι I
2 9 0 9 Highland Avenue Norwood, Ohio 4 5 2 1 2
ι You've passed inspection. Send me ι j your Spectroquality Solvents Book • J J ! J
NAME COMPANY ADDRESS CITY
I
STATE
ι
[ J J [ ZIP
!
19.-ZQ. M C A ι CIRCLE 1 3 5 O N READER SERVICE CARD
ANALYTICAL CHEMISTRY,
VOL. 44, NO. 3, MARCH 1972
·
105 A
Manufacturers' Literature Catalog. Catalog 72, 1328 pages, fea tures a broad line of laboratory instru mentation and supplies. Included are thousands of items with new listings of biomedical supplies, lab furniture, ma terials for tic, and specific ion appara tus. VWR Scientific, P.O. Box 3200, Eincon Annex, San Francisco, Calif. 94119 Laboratory Automation. A general in formation manual, 11 p, written for the man responsible for integrating a computer system into a lab, intro duces new concepts and techniques for lab automation, data acquisition, and automatic testing. Publ. P P 1200-002, EMR Computer. 612-888-9581 616
Super-Dispax-is Vltr. For dispersing, [< ing, blendfngv-fc-- - (•πι·*.· . J .
Te CIRCLE 1 8 3 O N READER SERVICE CARD
Meet Our New Baby! . . . the DUO-MONITOR simultaneously measures UV absorbance at 254 and 280 nm. CHECK THESE FEATURES: • Linear Read-out in absorbance • High sensitivity 0.0002A
Liquid Scintillation Counting. Four pages describe liquid scintillator solu tions, primary and secondary scintil lators, and scintillation-grade solvents. BJ-21. Burdick & Jackson Labora tories, Inc. 616-722-2310 618 Differential Amplifier. A 2-p sheet describes, pictures, and gives specifica tions for the Model 707-10D differen tial amplifier. Β & F Instruments, Inc. 215-639-7100 619 Micromanipulators. A 6-p bulletin describes and illustrates micromanipu lators which have motor-operated fineadjustment motions with micrometer readout to 0.01. Hacker Instruments, Inc. 201-226-8450 620
• Double beam stability • Micro cell volume
Only Laboratory Data Control offers a complete family of uvMonitors for liquid chromatography. Models 1205 and 1280 for 254 and 280 nm respectively—Model 1222 for both 254 and 280 nm simultaneously. No matter how difficult your column monitoring problem, LDC has a detector to suit your needs. For additional information on UV, Rl, fluorescence and conductivity monitors for chromatography write or call today. Our engineers welcome the opportunity to work with you on special applications.
LABORATORY DATA CONTROL P.O. Box 10235, Interstate Industrial Park, Riviera Beach, Fla. 33404 (305) 844-5241
CIRCLE 121 ON READER SERVICE CARD 106 A
·
ANALYTICAL CHEMISTRY, VOL. 4 4 , NO. 3 , MARCH
1972
Monitoring Dissolved Oxygen. A 4-p brochure describes the Model 5000 ana lyzer used to monitor dissolved oxygen in water pollution applications. The instrument includes a galvanic mem brane-type oxygen probe and tempera ture and conductivity sensors. Weston and Stack, Inc. 215-822-3346 621 Multichannel Analyzer System. A brochure describes the ND4410 singleparameter, multichannel analyzer sys tem which features pushbutton selec tion of software controlled functions, a choice of ADC's, and three switchselective modes of data acquisition. Nuclear Data, Inc. 312-529-4600 622
Manufacturers' Literature
CORCO REAGENT CHEMICALS ACIDS Sulfuric Acetic
Nitric Hydrochloric Perchloric Phosphoric
BASES A m m o n i u m Hydroxide Potassium Hydroxide Sodium Hydroxide
SOLVENTS Analytical Electronic Spectro photometric
ELECTRONIC CHEMICALS Dopants Epitaxials A c i d Etches
STANDARD SOLUTIONS Volumetric Buffer Percentage
SPECIALTY REAGENT CHEMICALS Methoxides Sodium Biphenyl E.D.T.A.
CUSTOM CHEMICAL SYNTHESIS
C O R C O CHEMICAL CORPORATION Λΐσπι/focfurers of Reagent and Electronic Chemicals
Tyburn Road & Cedar Lane, Fairless Hills, Pa. 19030 'Phone: (215) 295-5006 CIRCLE 3 3 O N READER SERVICE CARD
ESCA. An 18-p brochure describes an approach to building as ESCA com plete with uv source and high-powered 22 kV, 300 mA X-ray source for under $50,000. Advanced Research Instru ment Systems, Inc. 512-926-6130 6 2 3 Application Notes Long and short-wave lamps, 10 p, "endless" applications in lab and re search and industry including 80 ref erences. Atomic Products Corp. 6 2 4 Dry-column chromatography reprint, 10 p, procedure for transferring ana lytical tic separations to preparative scale. Waters Assoc, Inc. 625 Condensation nuclei counter, 2 p, in cluding 16 references, on uses of this instrument in research, pollution mea surements, etc. Billings & Gussman, Inc. 626 Analog devices, 11 p, basic analog multiplier principles, gives 14 circuits. Analog Devices, Inc. 627 Microtome knife sharpening, 20-p monograph from Professor Haselmann of Germany, describes faster sharpen ing process and includes references. Shandon Scientific Co., Inc. 628 Boiler metal failure analysis, 12 p, explains how metallography is used, includes metallography glossary. Nalco Chemical Co. 629 Acrylamide gel electrophoresis rea gents, 2 data sheets, use of acrylam ide and iVjA^-methylenebisacrylamide. Polysciences, Inc. 630 Temperature standards, 2 p, describes how to calibrate instruments with or ganic compounds designed for the 50300°C range. Fisher Scientific Co. 631 Tic separations, bulletins on separation of oil-soluble vitamins, bile acids, digi talis compounds, phenyl phosphines, purines, nitrophenols, antipyretics, and monophosphate nucleotides on com pany tic sheets. J. T. Baker Chemical Co. 632 Cell counting, 8 p, using the Autocytomcter II and Hem-alyzer for animal blood cell counting, a survey, with 21 references. Fisher Scientific Co. 6 3 3 Tic separations, bulletins on separa tions of tryptophan metabolites, sugars, creatine and creatinine, cortico-steroids, and uric acid and its impurities. J. T. Baker Chemical Co. 634
IS WATERS' MODEL R-401 REFRACTOMETER ANY GOOD? Ask our competitors! The R-401 has been installed in many of our c o m p e t i t o r s ' most expensive liquid chromatographs. Why? This unique opti cal deflection detector provides t h e reliability and sensitivity found in no other refractometer.
Features of the R-401 include: • • • • • • •
Stable at high flow rates Leak-free Temperature-change com pensated 512 to 1 dynamic range Linear calibration Unaffected by dirt, films, or air bubbles 1.00 to 1.75 Rl range
Let us know what liquid chromatograph you operate and we will send you the facts on the R-401 and show you how easy it is to install it in your instrument. On the other hand, if you a l r e a d y o w n e d one of t h e Waters' liquid chromatographs which feature the R-401 as the pri mary detector, you wouldn't have to go to all this bother, would you?
WATERS ASSOCIATES 61 Fountain Street Framingham, Mass. 01701 CIRCLE 1 9 7 O N READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 44, NO. 3, MARCH 1972
·
107 A
