NEW PRODUCTS
arately or simultaneously. The system includes pump, injector, cartridge column, recorder, and detector. Bacharach 411 AA. Model Z-8100 flame/furnace Zeeman AA spectrophotometer eliminates the need for furnace alignments and for interchanging of sample compartments. Features include statistical capabilities such as mean, standard deviation, and relative standard deviation. Hitachi 413
Waters 845 Apex chromatography data station for GC, based on the VAX/station 2000 computer, acquires data and controls up to eight gas chromatographs using highresolution analog-to-digital converters. Waters Chromatography Division of Millipore 402
SEM. SCU 020 SEM cryopreparation chamber integrates into any standard SEM and allows multiple examinations of one specimen, including repeated evaporation and/or sputtering, without interrupting the vacuum. The stage features x-y-z axes control, ±30° rotation, and 0-45° tilting. Balzers 412
Software Electrophoresis. CHEF-DRII system combines electronic and electrophoresis technologies to resolve DNAs from a few hundred bases to ~ 1 0 million bases. The system provides a uniform electric field at all points of the gel and a 120° angle of alternating pulses. BioRad Laboratories 404 Spectrophotometer. Spectronic 3000 Array UV-vis spectrophotometer features a photodiode array detector for fast scanning over the 190-900-nm wavelength range. The system is composed of three interconnecting modules: the optics/central processing unit, the video display unit, and the keyboard. Milton Roy 405 MS. Delta GC is a GC/combustion MS system designed for measurement of carbon isotopes. Organic compound components separated by the gas chromatograph are converted into CO2, which is purified without the use of cryogenic coolants and is then introduced into the MS ion source. Finnigan 406 LC-EC. Deoxygenator, designed for use with reductive LC-EC detection methods, eliminates 99% of dissolved oxygen from both the mobile phase and the sample. The unit is compatible with most common solvents and mobile
phases, as well as with isocratic and gradient elution techniques. NovaTech 407 Detector. Model UD-1 ultrasonic detector for large-scale preparative HPLC accommodates flow rates up to 5000 mL/min. For remote operation or under hazardous conditions, the electronic module can be operated up to 150 m from the 3.5-mL stainless steel flow cell. Showa Denko America 408 pH. Sentry-2000 is a laboratory and process pH control and monitoring system that controls pH to an accuracy of 0.01 pH units. A manual or automatic pH control feature allows for the addition of acid or base to regulate and maintain the required pH value. Carolus Corp. 409
MS. PC version of the NBS/EPA/ MSDC mass spectral database, which contains more than 44,000 spectra, can be searched by CAS registry number, identification number, chemical name, molecular formula, and molecular weight. Royal Society of Chemistry 414 Image analysis. OPTIMAS captures electronic images from standard and high-resolution TV cameras, CT scanners, MR imagers, and ultrasound machines. The program allows users to enhance images with standard imageprocessing techniques and then extract a variety of measurement data. BioScan 415
Manufacturers' Literature
Gases. KA series toxic gas detectors are direct digital-reading, portable instruments that incorporate gas membrane galvanic sensors. Dedicated units are available for the continuous monitoring of hydrides, ammonia, chlorine, hydrogen chloride, ozone, or hydrogen. CE A Instruments 410
Evaporators. Brochure highlights Buchi rotary evaporators. Included are two models that feature programming capabilities for rotation speed, bath temperature, operating pressure, and distillation time. 16 pp. Brinkmann Instruments 417
LC. Coleman 3D HPLC features a trifunctional detector that allows UV, fluorescence, and conductivity detection modes to be monitored either sep-
For more information on listed items, circle the appropriate numbers on one of our Readers' Service Cards
1350 A • ANALYTICAL CHEMISTRY, VOL. 60, NO. 23, DECEMBER 1, 1988
NEW PRODUCTS LC newsletter. Rainin Dynamax Re view, Vol. 2, No. 1, includes articles on evaluation of a new cyanopropyl bond ed phase and HPLC control and data analysis with the Apple Macintosh. 12 pp. Rainin Instrument Co. 418
Iodide. Application note discusses the determination of iodide in brine using ion exchange and amperometric detec tion. Areas of application include pho tography, mining, and pharmaceuti cals. Dionex 422
TLC. Brochure describes the TLC Scanner II, designed for both TLC and electrophoresis applications. The in strument features absorption and fluo rescence scanning, with scan speeds of 0.1-20 mm/s. 16 pp. Camag 419
Catalogs
ELISA. Brochure discusses the Biomek ELISA automated laboratory workstation, intended for infectious disease testing and routine ELISA work. The workstation performs posi tive sample identification, sample preparation, reagent addition, and plate washing and reading. Beckman 420 Model 880 sulfur analyzer measures percent level of total sulfur in samples such as crude oil, coal, soil, and plant tissue. The system is based on oxidative combustion with nondispersive IR detec tion. Tracor Atlas 401
Prep LC. ScaleUp contains informa tion on new annular expansion column technology and the use of acid and base mobile-phase modifiers in normalphase preparative LC. 6 pp. Separa tions Technology 421
Chemicals. Catalog includes amino acid derivatives; complex carbohy drates; and rare organic and natural products, including flavonoids, anthocyanidins, and coumarins. 164 pp. Spectrum Chemical Mfg. Corp. 430 Polymers. Catalog includes analytical polymer standards, inhibitor removers, ion-exchange resins, monomers, poly mers, and plasticizers. A list of techni cal publications is also included. 68 pp. Scientific Polymer Products 424 GC. Catalog features products for cap illary GC, including columns, adapters, syringes, septa, and gas purifiers. Anal yses of acids, air, water, flavors, fra grances, PCBs, and petroleum prod ucts are discussed. 70 pp. Supelco 425
The Ultimate Detector: (30 psec for < $15K with single photon sensitivity! That's the beauty of our ultra high speed MCP-PMTs. Hamamatsu microchannel plate Photomultiplier Tubes (MCP-PMTs) offer a broad spectral response, using various cathodes and windows from 115 to 1500 nm,* with rise times of less than 150 psec. Some tubes feature an IRF faster than 30 psec* plus a dynamic range greater than 105.* Gatable types can switch >4 decades with
