SPE. SPE-Dex automated extractor for environmental analyses is de signed for use with 3M Ε m pore ex traction disks. The extractor is pre programmed to dispense solvents and water samples for all EPA meth ods, collect liquid waste and ex tracted organics, and rinse the sam ple container without operator intervention. Eight stations can be operated individually or in batch mode, and each station contains built-in sensors to monitor and con trol liquids and to measure vacuum and pressure levels. The controller is user-programmable for method de velopment. Horizon Technology 408 DNA amplification. Quant-Amp DNA amplification and detection system combines a scintillation prox imity assay (SPA) with polymerase chain reaction (PCR) DNA amplifica tion for detection of target sequences in 10 min and quantitation in 30 min without separation steps. PCR prod ucts can be quantitated by a total amplimer procedure by radiolabeling with [3H]dTTP followed by scintilla tion counting, or by a specific am plimer method in which an internal sequence of the target DNA is added to the reaction mix, which is then heated to separate double-stranded PCR products and incubated with SPA beads for scintillation counting. The assay is adaptable for RNA am plification. Amersham 409
O n e of the Few Things M o r e Predictable Than a Waters Nova-Pak Column. Today's method development labs require efficient HPLC columns that give reliable, reproducible results. When you use Waters'" Nova-Pak columns you can count on excellent reproducibility-batch to batch, lot to lot, location to location, day after day. Just like you can count on the sun to rise. W e control every step of the manu facturing process with over 6 0 QC tests in our ISO 9 0 0 2 material synthe sis facilities. That means our columns Sates Representative Circle Reader Service No. 94
LIMS. Shareware for a secure sin gle-user LIMS based on Borland's Paradox relational database includes password access control, encryption of data tables to prevent data alter ation from outside the system, and an audit trail with date and time stamps for all changes made to data in the application. The program,
MILLIPORE Waters Chromatography Literature: Circle Reader Service No.-25.
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ANALYTICAL CHEMISTRY, VOL. 65, NO. 11, JUNE 1, 1993 · 553 A
NEW
PRODUCTS SEC and viscometry instrumenta tion. Instrument parameters for the Dawn and the MiniDawn and a list of references are included. 20 pp. Wyatt Technology 417 Spectrometry. "Signal" newsletter contains articles describing the Se ries 77700 monochromator/spectrograph, the Merlin optical radiationmeasuring system for detection of low light levels from UV to IR wave lengths, and use of the InstaSpec se ries of diode array detectors for LED and laser diode characterization. 4 pp. Oriel 418
ICAP 61Ε Trace Analyzer is an ICP spectrometer that incorporates a highefficiency grating blazed at 190 nm and optics with 0.008-nm resolution to elimi nate most spectral interferences. An axial plasma provides improved S/N, and a conventional cross-flow nebulizer provides detection limits close to those for GFAAS. Thermo Jarrell Ash 414
which is designed for small- or medi um-size laboratories, includes a demonstration data set of 20,000 samples and 185,000 individual test results. A user manual can be printed from the software, which re quires a 386 PC with 4 MB RAM and 40 MB of hard disk space for opera tion. C. N. Hegarty 411 Spreadsheet calculations. "Ana lytical Chemistry Calculations Using Lotus 1-2-3" is a manual with a disk ette that demonstrates spreadsheet calculation methods for gravimetry, solubility, titration, linear and non linear regression, successive approx imation, second-derivative analysis of endpoints, and other applications. Datrex 412
Manufacturers' Literature Food chemistry. "Food Notes" newsletter for separations in food and agriculture applications includes articles on the use of HPLC for com pliance with future nutrition-label ing requirements in the United States and Europe, the use of photodiode array detectors for the detec tion of veterinary drug residues in animal products, and HPLC determi nation of aflatoxins in foods. 18 pp. Millipore/Waters Chromatography 413 Viscometry. Booklet contains infor mation on dial, digital, and program
mable viscometers and rheometers for stand-alone or process measure ments. Configurations, components, applications, and range data are pre sented for cone/plate viscometers, a high-temperature viscometry system for melts and liquids, adapters and accessories, and controlling software. Also included are a selection table of spindle sets for low-, medium-, and high-viscosity applications, and de scriptions of five process viscome ters. 32 pp. Brookfield 415 Chiral chromatography. Selection guide to capillary GC columns for chiral separations describes applica tions, hydrophobicity and hydrophilicity, size selectivity, retention characteristics, separation mecha nisms, derivatization and column re generation procedures, and storage conditions for cyclodextrin deriva tives as stationary phases. The guide includes a table of available ligands that lists operating temperatures and dissociation constants for al pha-, beta-, and gamma-cyclodextrin derivatives. 42 pp. Advanced Separa tion Technologies 416 Light scattering. Booklet describes the use of light-scattering instru mentation for macromolecular char acterization. Topics include a history of the development of light-scatter ing technology, principles of opera tion, diagrams and equations, com parisons of single- and multiangle instruments, and applications with
554 A · ANALYTICAL CHEMISTRY, VOL. 65, NO. 11, JUNE 1, 1993
HPLC. "SynChroNotes" brochure describes solid phases for reversedphase HPLC. The advantages of monochlorosilane bonded phases over di- or trichlorosilanes, ligands for optimal protein recovery, sample size and loading capacity effects on sensitivity, and the substitution of ethanol/w-propanol for acetonitrile as a less toxic solvent system are dis cussed. 4 pp. SynChrom 419 MS/IR. "Ion Notes" newsletter de scribes the HP 5972A benchtop mass-selective detector (MSD) and an electrospray MS system. Sample spectra of organic compounds in EI and CI modes are displayed for the MSD, and MW determination spec tra from the electrospray MS system are included for a mixture of cy tochrome c, myoglobin, and lysozyme. EI is described and illustrated with a schematic diagram. 8 pp. Hewlett Packard 420
Catalogs Chromatography. Catalog includes selection guides, performance crite ria, sample chromatograms, col umns, instrumentation, accessories, and books for GC, HPLC, affinity chromatography, low-pressure LC, and TLC. Solvents and GC derivati zation reagents are also listed, along with environmental and pharmaceu tical standards. 224 pp. Sigma Aldrich 421 Fittings. Catalog of chromatography and fluid transfer fittings contains products for high- and low-pressure LC, tubing, filters, ferrules, columns and accessories, valves, frits, back pressure regulators, and tools. New products include coiled PEEK tubing for HPLC, a PEEK flangeless ferrule system, and a biocompatible metalfree inline check valve. Upchurch Scientific 422
