New
Products
ICP sample preparation Automated oil dilator dilutes 45 samples at a time by weight or by volume. Oil samples are transferred from field containers to a dilution tube with a transportable cannula, solvent is added, and each sample is mixed and placed in an ICP autosampler-compatible rack. Operator-definable wash parameters eliminate sample carryover. Bohdan
• 424
INSTRUMENTATION Titrator Automated titrator prepares oil samples for titration, performs titrations according to ASTM methods, and compiles results into a final report. Multiple titration methods can be performed on a single sample without presorting. Individual tracking of samples by ID number allows immediate viewing of a sample result upon completion of a titration. Bohdan • 425 Spectrophotometer F-2500 fluorescence spectrophotometer features FL Solutions software for PC control and data handling running under Windows 95/Windows NT 4.0. A built-in GLP program allows users to automatically check resolution, noise, and hardware; the results can be sent to the optional printer 678 A
along with lamp hours, user ID, and instrument serial number. Accessories include LC flow cells and solid-sample holders. Hitachi • 426
in 12-18 minutes per sample, uses a combination of elevated pressure and temperature with common liquid solvents. Dionex • 430
Microplate reader Optimax tunable microplate reader uses a grating monochromator to select wavelengths from 340 to 850 nm in 11nm increments. The unit, which provides controlled temperatures up to 45 °C, accommodates round-bottom, flat-bottom, or half-area well plates. Applications include bacterial identification, platelet aggregation, kinetic and endpoint ELISAs, enzyme assays, and cytoproliferation. Molecular Devices • 427
GC detector Handbook describes theory and operation of the pulsed-flame photometric detector for GC. Applications in the petrochemical, food, environmental, and semiconductor industries are discussed. Varian • 431
Pharmaceuticals Automated UV-vis dosage formulation dissolution system can be configured for online or off-line testing. The software, which is compatible with Windows 3.1 and Windows 95 operating systems, provides password security and different levels of access for users or supervisors. The software also allows binary storage of data files to protect against inadvertent modification and inclusion of all raw absorbance information in the data files for manual verification of results, if needed. Perkin-Elmer • 428 Sample preparation The 2700 Sample Manager is a high-capacity, robotic sample-processing workstation designed for high-throughput laboratories using HPLC, LC/MS, or FIA/MS. The workstation accommodates standard 96well and high-density 384-well microtiter plates, 1.5-mLEppendorf tubes, and 13-mm tubes or vials. Waters • 429 LITERATURE Extraction Application note 330 discusses accelerated solvent extraction of the organic components of granular and liquid detergents. The extraction method, which is complete
Analytical Chemistry News & Features, October 1, 1998
Reversed - phase chromatography Brochure provides specifications, QC information, and chromatograms for the MCI Gel CHP10M polymeric reversed-phase column. Comparison to silica-based reversed-phase columns is included. Mitsubishi Chemical • 432 Columns Brochure highlights PLOT columns for the analysis of light hydrocarbons, sulfur gases, and small molecules. Technical information, order guides, and a comparison of different PLOT columns for the analysis of ozone precursors are included. J&W Scientific • 433 CHEMICALS Fluorescent dye Alexa 488 dye is an alternative to fluorescein for researchers using fluorophorelabeled bioconjugates. Proteins labeled with Alexa 488 exhibit brighter fluorescence and are more resistant to photobleaching than those labeled with fluorescein. Molecular Probes • 434 ISE standards Calibration standards for ion-selective electrodes include those for bromide, chloride, fluoride, and cyanide. Also available are the appropriate ionic-strength adjustment buffers for each calibration standard. Spex CertiPrep • 435
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Moisture determination
Standards
Hydranal-Coulomat AG Oven, designed for coulometric moisture determinations with a KF oven, can be used with insoluble solids or materials that undergo side reactions when titrated with conventional reagents. The reagent isfreeof pyridine, chloroform, carbon tetrachloride, and 2-methoxyethanol. Riedel-de Haen • 436
Manual contains more than 550 chemical reagents and solutions for water and wastewater testing. Included are reagents for alkalinity, chlorine, BOD, and nitrates. Thomas Scientific • 440
COLUMNS
GC Three columns are offered for food, flavor, and fragrance analyses: ultra low-bleed HP-23 cis/trans FAME columns for the separation of key cis/trans FAME isomers; HP-Chiral B columns, based on permethylated beta-cyclodextran, for the resolution of optical isomers; and HP-Basic Wax columns for analysis of amines and basic compounds. Hewlett-Packard • 437
Available only t o ACS Web
Standards
Catalog lists more than 6,000 organic and inorganic standards, including those for pesticides, explosives, and petrochemicals. Ready-to-shoot organic, surrogate, internal, and matrix spiking standards require no dilutions. Ultra Scientific • 441
Columns for petrochemical analysis include HP-PLOT Q polystyrene-divinylbenzenebased columns that provide separation of light hydrocarbons and other polar compounds starting at 60 °C; HP-PLOT A12033 KC1 columns designed for the determination of dienes in hydrocarbon streams; and smallbore HP-PLOT A1203 KC1, S, ,an M deactivated columns for fast analysis of hydrocarbons up to C10. Hewlett-Packard • 438
Articles ASAP ( A s S o o n As P u b l i s h a b l e ) puts readers in the world of real-time science. For all ACS
GC derivatization
Catalog features silylation, alkylation, and acylation reagents. Also included are silylafiongrade solvents, dry-block heating systems with stirring and evaporating capabilities, and a chart describing the derivatization of various functional groups. Pierce • 442
journals, each article is posted to the journa''s home page when it has completed rigorous peer-review, editing, and is fully approved for publication.
Standards Petrochemicals
Edition subscribers,
Pesticide and metabolite standards catalog includes common pesticides, herbicides, fungicides, and complete pesticides in kits. Standards are listed alphabetically, by catalog number, and by EPA method number. ChemService • 443
Articles ASAP are published anywhere f r o m 2 to 11 weeks before they appear in print, and carry all the electronic enhancements that put W e b Editions at the head of the
Chromatography
Catalog includes columns and accessories for GC, LC, and TLC, including solvents, standards, syringes, and vials. VWR 1 4 4 4
class for flexibility and functionality. Articles ASAP- one more way t o Know It Now w i t h ACS
GC CATALOGS Gases
Products featured in the catalog include high-purity specialty gases, precise calibration mixtures, and gas-handllng equipmentt A table lists the characteristics of pure gases, including chemical formula, molecular weight, specific gravity and volume, critical pressure and temperature, toxicity, and DOT hazard class. Air Liquide • 439
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Catalog lists stationary phases, stainlesssteel capillary columns, hardware, and consummables. Quadrex I 445
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Analytical Chemistry News & Features, October 1, 1998 6 7 9 A
