New Products - ACS Publications - American Chemical Society

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New Products

Dye Laser The new Model 375 CW dye laser from Spectra-Physics operates with all available dyes and handles dye solutions with viscosities varying from less than 5 to over 25 cP. The 375 features low output beam noise (less than 1% rms from 10 to 100 Hz) and a new Fabry-Perot passive tuning element. The system does not require critical optical cavity alignment and can operate unattended for days at a time. Spectra-Physics 403

Gas Chromatograph

Colorimeter

Model AGC-211M gas chromatograph features 100% catalytic conversion of CO to methane to provide full-scale CO detection ranging from 50 ppb to 2 ppm in atmosphere. Flame ionization detection is utilized, and the converter is of low-dead-volume-design. Carle Instruments, Inc. 411

A new absorbance colorimeter, Model 52-A, offers a linear range of over 2 absorbance with linearity of ±2%. Operating range is 400-1100 nm, and narrow band pass of 7 nm is featured. Drift is 0.01 absorbance/hr, and noise level is ±0.002 absorbance. Compact (2y2 X 5y4 X 6 in.), lightweight (3 lb), and priced at $275. Glenco Scientific, Inc. 420

Liquid Chromatography Columns

Spectrophotometers A new line of PM 6 spectrophotometers features four different models with sampling capabilities from manual to semiautomatic, to fully automatic and kinetic determinations. Deuterium and halogen light sources are featured with built-in power supplies. Wide range photomultipliers and double-grating monochromators are standard, and absorbance and concentration measurements are displayed on a 4-digit meter. Prices range from $4100 to $8000. Carl Zeiss, Inc. 408

Series 3203 high-pressure gas-liquid chromatography columns for high-resolution, high-speed, and small sample size applications feature operating pressures to 1000 psi, Yig-in. zero volume fittings, and are operable at 0100°C. Sizes range from 0.3 X 15 cm to 1.2 X 100 cm. Glenco Scientific, Inc. 417

Specific Ion Meter A new ion meter determines concentrations of 16 different ions utilizing the company's specific ion electrodes. Solid-state circuitry and four-scale selections are standard. Base price for Model SI-01-M is $395. Devon Products, Inc. 437

Laser System Model CMX-4 tunable laser provides direct wavelength readout, fast dye and mirror interchange without optical realignment, and tunes continuously from 445 to 700 nm. An accessory frequency doubler extends the tuning range into the UV from 265 to 350 nm. At 600 nm, energy is in excess of 6 mj/pulse, and peak power exceeds 6 kW. Priced at $14,750. Chromatix, Inc. 406 A N A L Y T I C A L CHEMISTRY, VOL. 46, NO. 14, DECEMBER

1974 · 1273 A

New Products

Photon Counter The new Aminco photon counter, a digital light measuring system, en­ ables a spectrofluorometer or fluorometer to measure extremely low light intensities by counting single quanta. Used in place of the photomultiplier microphotometer, this modular unit enables the spectrofluo­ rometer to detect fluorescence signals too weak to be measured by conven­ tional techniques. American Instru­ ment Co. 424

Electron Microscope Balscan, a new scanning electron mi­ croscope with 400 Â resolution and magnification to 60.000X, features continuous zoom magnification, variable kV, 35-sec specimen change, specific feature selector, and simplified fast cleaning. Entire magnification range can be covered in 20 min. Priced at $19,750. Bausch and Lomb 426

Spectrophotometer Accessory Model 2520, a new 20-cm gel scanner accessory, permits the spectrodensitometric assay of polyacrylamide cylinders and slabs of up to 20 cm in length. The unit incorporates scanning speeds of 0.5, 1.0, 2.0, 5.0, and 10.0 cm/min, and is designed for computer integration. Gilford Instrument Labs, Inc. 427

Process Chromatograph Computer System Beckman's new computer system pro­ vides direct monitoring and control of up to 32 process chromatographs with associated single- or multiple-stream sample conditioning systems. The Model PDP-11 minicomputer assumes complete system control and accepts inputs from any type detector includ­ ing thermal conductivity, hydrogen flame ionization, and helium ioniza­ tion. Capabilities include simplified data presentation, elimination of cali­ bration gases, automatic system-mal­ function monitoring, and numerous auxiliary calculations. Beckman In­ struments 404

GC/IR Integrated System The ST-10 integrated gas chromatograph-infrared spectrometer system features a fast, Fourier transform in­ terferometer with a mercury-cadmium-telluride detector. The ST-10 has a resolution of 4 c m - 1 and a range of from 3950 to 700 cm" 1 (2.53-14.5 μ). The unit is capable of obtaining the IR spectrum of less than 100 ng of a GC effluent within 2 sec. Spectrotherm Corp. 423

Microprocessor/ Mass Spectrometer The Olfax 7000 system consists of an integrated circuit microprocessor and a quadrupole mass spectrometer and provides routine qualitative and quantitative analyses of illicit drugs in 30 sec. The Intel 8008 microprocessor features solid-state circuitry and readonly-memory cards and stores spectral "fingerprints" of up to 64 substances. Physical preseparation is unnecessary in most cases, and raw drug analysis can be accomplished at the rate of 25/hr. In addition, the system allows for atmospheric pressure environments to be sampled directly. Prices range from $50,000 to $70,000, depending on optional accessories. Universal Monitor Corp. 402

Transient Recorder

Graphite Tube Atomizer The FLA-10 graphite tube atomizer converts a sample into free atoms for concentration determinations by flameless atomic absorption. Designed to provide more uniform temperatures and prevent carry-over from sample to sample, the unit has detection limits for some elements at the 10~ 14 gram level. Three functions make up the analytical cycle—dry, ash, and atomize— and three controlled gas flow programs are featured. Fisher Scientific 409

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1974

The 514A single-channel transient recorder provides sample rates as high as 2 MHz with 10-bit resolution. Used in fault recording, electrochemistry, and other high sample rate applications, the 514A provides a "split memory" mode permitting two sequential recordings and simultaneous playback. Dual-time base recording, 4digit thumbwheel resolution, and automatic reproduction of stored data are special features. Priced at $2975. Physical Data, Inc. 421

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Viscosity Recording

New Products

The Brookfield recording Viscometer is a comprehensive system which gives a permanent record of viscosity and/or temperature as a function of time. Four measuring options are available: • Standard Brookfield disc or cylinder spindles.

• Coaxial cylinder spindle and chamber — a defined system using small samples. • Cone/Plate for absolute shear rates using micro (1 ml) sample volumes. • Thermosel for measurement at elevated (500°F) temperatures. Optional electronic or pneumatic recorder.

Chromatography Spot Applicator

WRITE FOR MORE DETAILS EXCLUSIVELY CONCERNED WITH VISCOSITY

BROOKFIELD BROOKFIELD ENGINEERING LABORATORIES, INC. Oept. Κ

MEASUREMENT AND CONTROL FOR OVER 4 0 YEARS.

STOUGHTON, MASS. 02072

617/3444310

The Evapplicator permits single oper­ ation concentration and spot applica­ tion to chromatographic media, as well as evaporation rate and spot size con­ trol. The triparameter control system regulates air or gas flow rate, air or gas temperature, and adjustment of Tef­ lon application capillary. Channel-tochannel spotting reproducibility is 11.5% in the totally self-contained sys­ tem. Manostat Corp. 410

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IR Detector

RECORDING BALANCES with a little something entra

A new highly sensitive Golay-type in­ frared detector with nonselective wavelength range of 0.5 μ to 1 mm fea­ tures sensitivity of 1.5 Χ 106 V/W and noise of only 7 Χ 10" 1 1 W. The detec­ tor head (2.4 X 3.58 X 4.25 in.) houses the gas chamber, the optical readout system, and the amplifier. Model 7500 is designed with a safety feature to prevent changes in ambient tempera­ ture from affecting the detector. Oriel Corp. 438 Laboratory Furnace

You can get recording balances from Cahn from a capacity of 2.5 g up to 100 g, with sensitivities from 0.1 μg to 0.5 mg... but you can also get the accessories to handle the require­ ments of your specific application:TGA, vacuum research, gas adsorption, particle size determination, Mag Sus, and many others. For complete details, write for literature. Cahn Instruments, A division of Ventron Corporation, 16207 S. Carmenita Road, Cerritos, California 90701, Telephone (213) 926-3378, TWX 910-583-4806. CIRCLE 3 5 O N READER SERVICE CARD

CAHN

1276 A · ANALYTICAL CHEMISTRY, VOL. 46, NO. 14, DECEMBER 1974

The lab size Rad-O-Glow Globar fur­ nace with continuous operating range to +2700°F features setting accuracy to within ±0.5% of scale and indica­ tion accuracy of ±1-0.5% of scale. The chamber dimensions are 4-in. width X 8-in. depth X 4-in. height, and the unit operates on 120-V/l-Ph/50-60Hz ac. Recommended for brazing, forging, annealing, aging, heat-treat­ ing metals, and laboratory ceramics. Blue M Electric Co. 439 For more information on listed items, circle the appropriate numbers on one of our Readers' Service Cards

New Products

approved

total organic carbon volatile organic carbon total carbon

Automated Serum Analysis Model JCA-N8C4R automated assay system for serum analysis is a hybrid system combining eight channels for endpoint assay and four channels for reaction rate assay. Features include simultaneous determinations of up to six enzymes, 12 simultaneous chemical tests at a rate of 60 samples/hr, and automated data reduction and programmer operation. JEOL, Ltd. 401

Infrared Interferometry

Concentration Colorimeter

Model FMS-7001P Fourier multiplex interferometer system is designed to operate as a peripheral device to your existing computer. The unit features a single printed circuit control board with all control functions interfaced through T 2 L logic that may be monitored or driven by a computer. Prices average about $39,000. Model 7101 features interferometer output that is digitized and recorded on magnetic tape as 15-bit data points. Eocom Corp. 418

Model 53A colorimeter features an adjustable concentration range of over 2 absorbance with linearity of ±2%. The meter is direct-reading in linear concentration and adapts to all standard methodologies in the 400-1100-nm range. Also featured are 7-nm narrow band pass, drift of 0.01 absorbance/hr, standard cell holder for 13-mm tubes, and a compact size of 2x/2-in. height X 5%-in. depth X 6-in. width. Priced at $275. Glenco Scientific 422

Raman Monochromator The Ramanor HG-2 double monochromator system is designed around the company's aberration-corrected, concave holographic diffraction gratings. The system offers the rejection level of a triple monochromator (10 - 1 4 at 5 Â of the laser line) and is fully programmable with an independent stepping motor on each slit as well as on the wave number drive. It is easily interfaced with most laboratory minicomputers and is priced at $17,000. JY Optical Systems 419

Density Gradient Scanner Model 2580 accessory for spectrophotometers incorporates a 2.5-mm path length flow-through cuvette with an illuminated volume of 5.5 μΐ. The 2580 is designed to provide high resolution and sensitivity to narrow gradients from centrifugation studies and fea­ tures both top and bottom harvesting capability. A universal adapter cone accommodates all standard size cen­ trifuge tubes. Gilford Instrument Lab­ oratories, Inc. 442

THE DOHRMANN* DC-50 ORGANIC ANALYZER makes all of these measure­ ments accurately and rapidly. Based on proven, E P A approved" methods, it avoids interferences and undesirable pyrolysis re­ actions that historically have resulted in significant errors. • D I R E C T R E A D O U T : Four-digit pres­ entation shows carbon content directly in mg/liter or ppm. No recorder needed! • D I R E C T M E A S U R E M E N T : A single sample injection gives either Organic Car­ bon or Total Carbon content directly, not by difference. • INDEPENDENT MEASUREMENT: Volatile Organics are determined sepa­ r a t e l y from Total Organics to aid in source identification. • R E L I A B L E M E A S U R E M E N T S : De­ termines important, lightweight volatiles such as low molecular weight alcohols and ketones, normally lost by acidifica­ tion and sparging. • F A S T : 5 minutes per determination. • A C C U R A T E : Repeatability of ± 1 m g / liter or ± 2 % . • W I D E R A N G E : 1 to 2,000 mg/liter (ppm) without dilution. • P R I C E : $7,875, including start-up as­ sistance and operator training. ENVIRONMENTAL PROTECTION AGENCY, WATER PROGRAMS, G u i d e l i n e s E s t a b l i s h i n g T e s t Proce­ dures for Analysis of Pollutants. F E D ­ E R A L R E G I S T E R Vol. 38, No. 199, Part II, Oct. 16, 1973. For brochures, reprints, or dates and loca­ tions of seminars, contact: D O H R M A N N DIVISION, 3240 Scott Blvd., Santa Clara, CA 950S0. (408) 249-6000. Telex 346 395.

ENVIROTECH

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ANALYTICAL CHEMISTRY, VOL. 46, NO. 14, DECEMBER

1974 · 1277 A

New Products Dual-Detector Gas Chromatographs Series 5730A dual-column, dual-detector GC's feature a dual differential electrometer and a choice of electron capture, thermal conductivity, and flame ionization detector systems available in FI/TC, FI/EC, and EC/EC configurations. The dual differential electrometer provides two independent channels for chromatographic runs or operation in the compensation mode. Dual-flow controllers and independent temperature controllers are standard. Prices start at $6600. Hewlett-Packard 405

Fluid Analyzer This environmentally protected control station features a watertight enclosure for withstanding continuous water pressure without internal leakage and is adaptable to a variety of harsh environmental conditions. Controls are located externally, and calibration adjustments are internal. The analyzer provides continuous monitoring of suspended solids for turbidity control in process materials from 0 to 150,000 ppm. Gam Rad, Inc. 425

Quadrupole Mass Spectrometer Model QMG 511 with plug-in modulator design includes the quadrupole mass spectrometer control unit, a quartz stabilized RF-generator, electrometer amplifier, and high-precision analyzer with molybdenum mass filter system. Electronic concepts include computer interface, remote control, and mass peak identifier. The fully digitized system has a mass range of 1-511 amu and features a versatile accessory program. Balzers 412 For more information on listed items, circle the appropriate numbers on one of our Readers' Service Cards

Personnel Monitoring for Vinyl Chloride A new system for monitoring vinyl chloride exposure to industrial workers consists of a gas chromatograph with detection limits as low as 50 ppb, a flasher assembly for desorbing the sample into the chromatograph, and a sample pump with collection column/ holder. Workers wear the collector column and sample pump which are detached and placed in the flasher assembly, followed by connection to the GC for analysis. Accuracy of the system at 1 ppm is ±5%, and results are obtained in minutes. Bendix 440

Hot Stage Microscope The HSM5 hot stage microscope assembly allows precise study of thermal decomposition mechanisms by controlling the rate of sample heating from 1° to 1000°C/min. Temperature readings are accurate to within 1°C. The unit is intended for use with a stereoscopic microscope and can be used with 35-mm and cine attachments. A miniature water-cooled furnace controlled by a linear temperature programmer cools from 1000° to below 100°C in less than 5 min. Stanton Redcroft 414

Oxygen Demand Monitor Model PW 9625 measures the amount of oxygen consumed by a water sample (total oxygen demand) in less than 3 min and expresses the demand as an absolute quantity. The TOD meter consists of a flow regulator, an oxygendosing cell, a sample injection unit, combustion chamber, drier, oxygenmeasuring cell, and flow meter. Accurate TOD values from 10 to 10,000 mg O2/I- may be obtained. A 6-p technical bulletin on the PW 9625 is available. Philips Electronic Instruments, Inc. 429

pH Monitor Model 960 pH monitor, a complete online pH measurement system, has a range of 2-12 pH, features a new differential input pH amplifier/transmitter sealed into the electrode flow chamber, and gives rapid linear temperature correction. The Lazaran reference electrode does not require refilling or pressurization. Beckman Instruments 430

Labware Washers The Miele Automatic G 19 cleans and disinfects laboratory equipment of all kinds and operates by program cards. Other features include large two-level loading capacity, three automatic detergent dispensers, built-in water softener, and distilled water pump. A 22-p catalog is available. Baltimore Instrument Co., Inc. 431

Digital Integrator for Gas-Liquid Chromatography Model 38 Mini-Lab Integrator features a peak measuring range from a few microvolts to 1 V, a recorder attenuator, a full-scale counting rate of 1 MHz, automatic peak sensing and base line drift correction, and an 11-digit readout of retention time and area. Dimensions are 10-in. width X 5-in. height X16-in. depth. Priced at $1850. Columbia Scientific Industries 407 1278 A · ANALYTICAL CHEMISTRY, VOL. 46, NO. 14. DECEMBER 1974

Gas Chromatograph Model 750 GC with flame ionization detector is used to detect levels of vinyl chloride as low as 1 ppm in sam­ ples of ambient air and for other rou­ tine gas chromatographic functions. Sensitivity is 0.023 ppm/^V output. Relative standard deviation for a se­ ries of 10 runs is 0.61%, and analysis time is 3.2 min. GOW-MAC Instru­ ment Co. 415 Visible Emission Monitoring System The RM41 monitoring system for the precise optical measurement of smoke emissions features a completely auto­ matic zero calibration. The on-stack sensor unit provides linear outputs of double-pass transmittance and opaci­ ty and has a dual-beam optical sys­ tem, chopped light source for insensitivity to ambient light, and complete measurement system capability. Spec­ ification sheet available on request. Lear Siegler 416 Electrometer/Ion Chamber Interface Model 6169 is designed primarily for radiation dosimetry and connects di­ rectly to any electrometer having a triaxial input. The unit features builtin ion-chamber bias voltage and ad­ justable background suppression. Di­ mensions are 4 X 8% X 15% in. Two types of triaxial connectors and con­ ventional BNC connectors are provid­ ed. Priced at $375. Keithley Instru­ ments, Inc. 413 Blood Analyzer The Hycel 17 discrete chemistry ana­ lyzer is a programmable multichannel analyzer which performs a complete and fully automated 17-test profile for the clinical laboratory. Features in­ clude direct readout, stat determina­ tions, small sample capability (50 μΐ/ test), refrigerated reagents and sample tray, and a test output rate of 680 test results/hr. Hycel, Inc. 428 Dye Laser

AMERICAN CHEMICAL SOCIETY PUBLICATIONS IN MICROFORM • Over a million pages of chemistry's premier publications • Back volumes and current subscriptions available • Copying privileges built in to microfilm subscriptions • Current availability of nonprint materials in microfiche • For full details, write or call: Mr. Kenneth Phillips Special Issues Sales American Chemical Society 1155 16th St. N . W . Washington D C 20036 T e l : (202) 872-4364

and ask for a free copy of the booklet on the "Information Implosion !"

The Model 23 flashlamp-pumped laser by Electro-Photonics, Ltd., pro­ vides continuous tuning of a single low-divergence narrow linewidth across the visible spectrum. Extended spectral coverage is possible with non­ linear crystals. Features include a lamp life of around 500,000 shots, peak powers to 15 kW in the visible spectrum, and laser pulse duration of approximately 500 nsec. Priced at about $12,700. Laser Energy, Inc. 432 A N A L Y T I C A L CHEMISTRY, VOL. 46, NO. 14, DECEMBER

1974 · 1279 A

Chelex 100 vs. heavy metals.

New Products

Jar Tester

Photon Spectrometer/ Digital Correlator The Malvern 4300 photon spectrome­ ter and the K7023 digital correlator (Precision Devices and Systems Ltd.UK) comprise a complete system of laser photon correlation spectrometry capable of determining rotational and translational diffusion coefficients of molecules in minutes. Molecular weights can be discovered in less than an hour with an accuracy of better than 2%. The K7023 offers resolution of 50 nsec/pulse pair and incorporates signal clipping and parallel computa­ tion. Scientek Instrumentation Inc. 433

Gas Chromatograph

[fatal attraction] Chelex 100, Bio-Rad's chelating exchange resin, shows a high specific affinity for the ions of copper, iron, and other heavy metals. It's ideally suited for removing, concentrating, or ana­ lyzing trace amounts of these metals, even in the presence of large quantities of sodium and potassium. Chelex 100's diverse applications include: analysis of trace metals in natural waters, reagents, biochemicals, and physiological solu­ tions · removal of trace metals from reagents, culture media, soils, buffers and enzyme systems • recovery of metals from process streams · chromatography of closely-related metals · concen­ tration of trace metals for atomic absorption or anodic stripping voltammetry analyses. Call or write for bulletin 114.

ΒΙΟ-ROD Laboratories 32nd and Griffin Avenue Richmond, CA 94804 Phone (415) 234-4130 Also in: Rockville Centre, N.Y.; Mississauga, Ontario; London; Munich; Milan.

Model 9500-P Basic gas chromato­ graph is specifically designed to mea­ sure toxic organics and aromatic and chlorinated hydrocarbons. Features include a parallel column technique and sensitivity down to less than a part per million. A heated gas sam­ pling valve eliminates the need for sample preconcentration techniques. Carle Instruments, Inc. 434

Data Acquisition System The PD2064 key programmable data system is controlled through an 11function keyboard and microprocessor setup. Functions of the 8-248 channel self-contained system include signal conditioning, crystal-controlled clock­ ing, measurement intervals as fast as 25 channels/sec, and optional highlow alarms. Bulletin B110 is available for a complete description of the sys­ tem. Esterline Angus 435

Test Tube Heaters Multi-Blok heaters, available in six different models, offer a uniform heat­ ing source for multiple test tubes. Variable temperature control from slightly above ambient to +130°C fea­ tures control accuracy within ±0.5°C. A single heating unit will accommo­ date 30 test tubes, and 168 different combinations are possible. Lab-Line Instruments, Inc. 436

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1280 A · ANALYTICAL CHEMISTRY, VOL. 46, NO. 14, DECEMBER

1974

The Floe tester is a simplified jar test for use in water treatment plants and consists of a plastic base with mixing motor, test beakers, and a set of mix­ ers for addition of flocculant and other chemicals. Flash mixing is simulated by the hand-operated dasher/mixers, and a single-speed motor controls timed mixing. The unit accommodates six 600-ml beakers with recommended sample size of 500 ml. Costs $250 com­ plete. Hach Chemical Co. 443

Chemicals X-ray Diffraction Standard SRM 640 silicon powder, developed for use as an internal standard, is now available from the National Bureau of Standards. The weighted average of the lattice parameter (â) is 5.43088 Â, and the standard error is estimated to be 3.5 X 10~ 5 À. Available at a cost of $52 per 10-gram units. Office of Standard Reference Materials, Room B311, Chemistry Bldg., National Bureau of Standards, Washington, D.C. 20234

Ion-Exchange Resins Chemical Dynamics Corp. has added a number of new ion-exchange resins and related products to its line of laboratory products. The current price guide includes macroreticular and geltype ion exchangers, experimental and specialty resins, nuclear and chromatographic grade resins, liquid amines, and polymeric flocculants. Chemical Dynamics Corp. 444

Potassium Sulfate/ Catalyst Mixtures Kel-Pak powders are prepackaged mixtures of potassium sulfate and catalyst ingredients for nitrogen determinations by the Kjeldahl method. Quantity and proportions meet requirements of various methods, including those specified by AOAC. Five basic formulations are offered for greater personnel protection and elimination of contaminants. Curtin Matheson Scientific, Inc. 445

Clinical Enzymology Reagents Reagent packages and specific reference and procedural information for pertinent diagnostic enzymes are now available. Sets include acid and alkaline phosphatase, aldolase, amylase, cholinesterase, lactic dehydrogenase (LDH), glutamic pyruvic transaminase (SGPT), and others. Rowley Biochemical Institute 446