New productsdownloads.hindawi.com/journals/jamc/1989/376813.pdf · Beckman’sspectrophotometers Beckman have recently added DU DataComm,acommunicationspack-age for the company’s

Journal of Automatic Chemistry Vol. 11, No. 3 (May-June 1989), p. 137-147

New products

New mini-Ebdon nebuliser Adirect replacement for a Mein-hardt but with added attractions

Following the success of the PSA60.006 Ebdon High Solids Nebuliserin relationship to slurry atomisationfor ICP, PS Analytical, in co-opera-tion with Plymouth Polytechnic, hasrecently developed a mini-Ebdonversion of this nebuliser. Designed tofit directly into the Meinhardt nebu-liser end-cap as a straight replace-ment and constructed from Kel-F,the nebuliser both performs well andoffers significant advantages over theMeinhardt and crossflow nebulisers.

Data obtained from a sequentialplasma emission spectrometer usinga Gilson Minipuls (Luton, Bedford-shire) peristaltic pump to aspiratethe sample into a Fassel-type torch ispresented in table 1. The work wascarried out with a reduced-size spraychamber coupled to a tlow injectionvalve. Detection limits were obtainedin the standard continuous mode ofoperations, however, 10 1 samples of100 ppb concentration can be aspir-ated easily. The mini-Ebdon, like thestandard version, is inert, is highlyresistant to blockages, and providessimilar detection level capabilities tothe Meinhardt nebuliser.

For a limited period these nebuliserswill be offered at an introductoryprice of 210"00 delivered to the UK.

Table1.

Limit ofdetection in ppbElement (based on 3 o)

Cu 5Pb 148Mn 4Ca 0"29Mg 0"040

Comparison of data with Meinhardtusing similar plasma conditions givea detection level for Mg of 0"086 ppt.

For information on this offer and furtherinformation on this new product, contact

PS Analytical at their new address: ArthurHouse, B4 Chaucer Business Park, WateryLane, Kemsing, Sevenoaks, Kent TN156QY. Tel.: 0732 63416; Telex: 957645PSA G; Fax: 0732 61340.

Fluorescence detector fromPhilips Analytical

The PU4027 fully programmable flu-orescence detector from Philipsachieves high sensitivity and selectiv-ity through the use of high energyefficient optics. Designed for theanalysis of native and derivatisedfluorescent compounds, the PU4027,in combination with solvent deliverysystems such as the PU4100, pro-vides the ultimate in LC trace analy-sis.

Microprocessor-controlled operationgives greater versatility, excellentreliability and ease of use, whileoperation is further enhanced by anLCD diagnostic multi-display. Truedual monochromator operation,together with scanning of fluores-cence spectra, gives unlimited flexi-bility when determining optimumdetection conditions for multicom-ponent analyses.

A major feature of the PU4027 is theability to change wavelengths auto-matically during the chromato-graphic run. The instrument can beprogrammed to automaticallychange excitation and emissionwavelengths prior to peaks appear-ing. Under these conditions, com-ponents can be detected at maximumsensitivity.

For further information, contact: PhilipsScientific, York Street, Cambridge CB12PX, UK. Tel.: 0223 358866.

Polyscan 61E spectrometer fromThermo Jarrell Ash

Thermo Jarrell Ash have announcedthe PolyScan 61E spectrometer,a simultaneous/sequential spec-trometer for elemental analysis of

0142-0453/89 $3.00 ( 1989 Taylor & Francis Ltd.

water, oil and other materials. Thespectrometer consists of a 3/4 meterpolychromator for high samplethroughput and a 3/4 meter scanningmonochromator for the characteriza-tion and analysis of samples forelements which have wavelengthsthat are not installed in the focalcurve of the polychromator. Themonochromator and polychromatorshare the same ICP source and sam-

ple introduction system and are con-trolled using our ThermoSPEC soft-ware. The entire system, includingRF power, gas flows, and sampleintroduction system are controlledvia an IBM Personal System/2Model 50 microcomputer. Theplasma torch can be operated withlow power, low argon flow for routinesamples, and high power, high argonflow for difficult samples.

Unattended operation from the auto-sampler provides all the quality con-trol logic functions required by theEPA Contract Laboratory Program.Our ThermoSPEC software offersmulti-level operation includingmenu-driven control for novices andoccasional users, and a commandmode for expert spectroscopists. Alsoincluded is an integrated wordprocessor, database manager,spreadsheet, graphics and telecom-munications package.

For further information contact: Thermo

Jarrell Ash Corp., 8E Forge Parkway,Franklin, MA 02038, USA. Tel.: 50852O 1880.

Hewlett-Packard introducesbench top atomic emissiondetector

Hewlett-Packard company hasintroduced the first totallyautomated multi-element atomicemission detector (AED) for gaschromatography. The HP 5921A iscapable of selectively detecting anyelement (except helium) in gaschromatographic effluents.

The AED combines a new atomicemission source with a flat focal-plane

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The new HP5921A atomic-emission detectorfrom Hewlett-Packard Company with completesystem components includes: power supply for autosampler, left, HP 5890A gaschromatograph, HP5921 atomic-emission detector and the computer controller andsoftware.(PP4N4O)

spectrometer containing a movablephotodiode array. Controlled by theHP ChemStation, the AED, auto-sampler and gas chromatograph pro-vide total automation from elementselection through report generation.HP’s new detector is the first ofits kindcapable ofdetecting oxygen, nitrogen,sulphur, carbon, silicon, hydrogen,chlorine, bromine and many otherelements at picogramme levels. Appli-cations include petroleum and petro-chemical processing, environmentalmonitoring and chemical manufac-turing. It is particularly useful as anaid in the identification of chemicalcompounds.

Product capabilities: detection limitsfrom 0" 5 pg/s for carbon to 100 pg/s forfluorine; selectivities ofl 0 000 formostelements, including oxygen, whencompared to carbon; detection ofup tofour elements simultaneously fromone injection; automatic sequencesthrough any number of elements persample by changing wavelength andreinjecting; on-line spectra to confirmthe presence of a particular element;response factors for the same elementin different compounds are constant towithin 10%, regardless of the chem-ical nature of the compound beinganalysed; a compound’s element ratiocan be determined to typically better

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than 10% accuracy; column compati-bility ranges from 100-btm ID fusedsilica capillary to 1/4-inch packedcolumns; total automation ofanalysisand customised data presentationthrough macro-programming capabi-lities.

The AED consists of three majorparts: the light source (microwave-induced plasma); the light separator(spectrometer); and the light sensor[photodiode array (PDA)

The light source for the HP 5921A isan atmospheric pressure, microwavehelium-induced plasma. This plasmais generated in a water-cooled dis-charge tube contained in a newcavity design called a re-entrant cav-ity, which is a wave-guide coupled toa magnetron supplying microwavepower. This arrangement providesfor a very stable atomic emissionsource and requires no tuning ofmicrowaves.

The spectrometer is a flat focal-planemount consisting of an autofocusingslit, a concave holographic gratingand a movable PDA. The latter coversa portion of the spectrum (rangingbetween 10 and 30 nm, depending onwavelength) in the 160-800 nmregion. Any group of elements thathave emission lines within the span ofthe PDA can be detected simul-

taneously, up to a maximum of fourelements. Every element on theperiodic table has at least one atomicemission line in the spectral range ofthis design.

Using a PDA as the sensor givesreal-time multipoint background cor-rection to provide high selectivities.Since the PDA output can be savedduring a run, these on-line spectra canbe used to confirm the presence of agiven element in the gas-chromato-graphic peaks.

The HP 5921A complements massspectrometry and infrared detectionby allowing the user to determineelemental composition, which will becomplementary to IR and mass-spec-tral techniques.

The system, which is priced below$100000, includes the HP 5921Aatomic emission detector, HP 5890Agas chromatograph, computer con-troller with HP 35920A GC/AEDsoftware, HP 7673A automatic injec-tor, and HP ThinkJet printer/plotter.Estimated delivery is 16 weeksARO.

Forfurther information, contact: Hewlett-Packard, 3000 Hanover Street, Palo Alto,CA94304, USA. Tel.: 4158571501.

PreparativeHPLCsoftware

The Varex Corporation has justreleased the high resolution EGAgraphics version oftheir VERSAPrepController/Data Acquisition Soft-ware. This software additionally hasnew features such as the display of asecond detector signal and the abilityto loop and link stored methods.

This software now comes standardwith all VERSAPrep HPLC Systemsand is compatible with current instal-lations oftheVERSAPrep.

The Varex VERSAPrep has beendesigned for high-performance prepa-rative separations using high effi-ciency packing materials. Twofeatures not found in any other avail-able instrument are the pre-columnswitching valve with backflush andthe multi-column switching valve.These options allow for unique andversatile approaches to solving prepa-rative purification problems.

New products

A 15 min video tape showing theVERSAPrep using column switchingtechniques is alsonow available.

For further information, contact: VarexCorp., 12221 Parklawn Drive, Rockville,MD20852, USA. Tel.: 301984 7760.

Beckman software for automaticon-linedissolutionanalysis

The new Beckman Dissolution 6/12Soft-Pac software module for use withthe Beckman range ofDU spectropho-tometers provides convenient auto-matic on-line dissolution analysisfrom one or two baths. The softwareprogram integrates system oper.ationand control, sample delivery, dataacquisition and hard copy reporting.Analytical wavelength can be selectedfor productive analysis extending upto 166"6 h determined by the timeinterval and number of baths. Usingone or two wavelengths, the Soft-Pacmodule also allows for automaticbackground correction of raised orsloping baselines caused, for example,by sample turbidity. Volume correc-tions are not required.

Data can be customised by the user to

specific needs without complex pro-gramming steps. Dissolution percen-tage is calculated from a standard, orfrom a calibration curve generated byeither linear regression or quadraticcurve fitting, depending on theabsorption characteristics ofthe com-poundunderanalysis.

Reports include raw absorbance data,reduced tabulated data and graphicplots of the dissolution profile. Testresults include correction for referencestandard weight, the mean and rela-tive standard deviation, and mini-mum and maximum values. Anoptional RS232C output provides rawdata to an external computer or datalogger.

Forfurther information contact: Beckman,Progress Road, Sands Industrial Estate,High Wycombe, Bucks, UK. Tel.: 0494441181.

Software package for determina-tion of tristimulus values

An integrated software package fromBeckman- the DU Data Leader

together with Lotus 1-2-3 spreadsheetsoftware- is designed for use in thedetermination oftristimulus values inthe widely adopted CIE (CommissionInternational de 1’ Eclairage) system.

Beckman’s Data Leader is a powerful,fully integrated software packagewhich allows data capture from Beck-man spectrophotometers and subse-quent mathematical and graphicalmanipulation (in full colour on anIBM personal computer), therebyfreeing the spectrophotometer for itsprimary task of data measurement.Raw data files as well as manipulatedfiles can be permanently stored ondisk.

Forfurther information, contact: Be&man,Progress Road, Sands Industrial Estate,High Wycombe, Bucks, UK. Tel.: 0459441181.

Communications software forBeckman’s spectrophotometers

Beckman have recently added DUDataComm, a communications pack-age for the company’s DU-60 Seriesspectrophotometers, to their exten-sive range ofsoftware options.

DU Data Comm is designed for usewith an IBM PC/XT/AT or PS/2Series personal computer, allowingthe user to se;,d irograms stored ondisk or in the Beckman Data Trans-porter to a DU-60 or DU-50 Seriesspectrophotometer. Programs canalso be sent from the spectropho-tometer to the personal computer orDataTransporter.

This capability allows mass storage ofspectrophotometer step programsand provides an easier method ofwriting and editingsuch programs.

The seven functions available areshown on the main option screen and,by making a choice ofa function letter,the user can receive a program from orsend a program to the instrument,accept a program from the optionalData Transporter, dump a program tothe transporter, get the programdirectory from the instrument, list a

program on the printer, or changeset-up parameters. Help messages canbe obtained at any time during use at

the touch ofa key.

Forfurther information, contact: Be&man,Progress Road, Sands Industrial Estate,High Wycornbe, Bucks, UK. Tel.: 0494441181.

HP software for UV/visible spec-troscopy

Hewlett-Packard Company haveannounced new MS-DOS softwarefor the HP 8452A UV/visible spec-trophotometer and the HP Vectrapersonal computer.

A combination of diode-array spec-troscopy with applications softwaremake it possible to offer a singlepackage suitable for both labora-tories requiring straightforward, re-liable, high-productivity, routineanalyses and laboratories involved inmethod development and research.

The new software contains optionsfor general scanning, quantitationand kinetics applications. The pack-age uses easy to follow menus andoffers improved graphics featuresand better data-handling capabili-ties.

The general scanning software can

display a complete UV/visible spec-trum in seconds. With only a fewkeystrokes, spectra can be displayed,overlaid and mathematically ma-

nipulated displaying, the resultingspectra. The quantitation softwareprovides fast quantitative determina-tions at one or several wavelengths.Suspect results are automaticallyflagged, and linear and non-linearcalibration graphs can be selected.The system can be automated to runcalibration standards, unknowns andblanks unattended.

The kinetics software enables users toautomatically acquire complete spec-tra at selected time intervals. Anywavelength can be selected fromthese data sets. Reaction rates andrate constants can be calculated forthe time trace data. The resultingdisplay includes a plot of the timetrace data overlaid with the calcu-lated curve fit.

Other programs can be started in-teractively from the UV/visible soft-ware environment. For example:complex calculations on spectral

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New products

data and formatting can be doneusing spreadsheet programs, such asLotus 1-2-3; files can be edited usingseveral word-processing packages;spectra can be manipulated graphic-ally using HP Charting Gallery orHP Drawing Gallery; files can beuploaded to mainframe computersusing communication or networkingpackages. After using one of thesepackages, the display automaticallyreturns to the UV/visible softwarewithout further programming.

Forfurther information, contact: HewlettPackard, 3000 Hanover Street, Palo Alto,CA 94304, USA. Tel.: 415 857 1501.

pUMa CHEMMOD launched

U-Micro has announced the launchof an extremely powerful desk-toppackage.

The pUMa CHEMMOD is builtaround the Motorola 68020 andINMOS Transputer processors. The68020 runs an industry standardmulti-user, multi-tasking, operatingsystem and controls peripherals,such as disks and printers. A T800Transputer runs the main applica-tion ,ode plus interfacing to the highperformance graphics system builtinto the pUMa.

As well as providing a high level ofperformance the use of the Trans-puter gives the pUMa workstation aneasily expandable computationalpower. The pUMa offers about 1"2times the power of the VAX mini inits standard form but can be easilyexpanded to 100 times the power ofthe VAX. The Transputer makesthis possible with its parallel process-ing architecture.

The CHEMMOD software packageincluded in the pUMa CHEMMODworkstation provides comprehensivemodelling facilities. It was first intro-ducecl in 1987 and has been soldsuccessfully by U-Micro throughoutthe world.

A particular feature of the newpUMa CHEMMOD workstation isU-Micro’s commitment to porting awide range of other chemistry andmodelling related packages. Theseinclude: MOPAC, a semi-empirical

molecular orbital program whichprovides information not possiblewith molecular mechanics, such ascharge distribution; Gaussian 88, amolecular orbital program; HASL, a

QSAR program which extends thesuperpose facility ofCHEMMOD tocover the Van der Waals volumes ofthe molecule, rather than just atomicpositions; Predict, a protein second-ary structure prediction programwhich, given the amino acidsequence, will predict the conforma-tion of the individual amino acids;AMBER, molecular dynamics;3DScan, a sophisticated program forsearching the Leeds Birkbeck 3Dprotein structure database forfeatures of interest; TP-MIN, aparallel version of the CHEMMODminimiser for use with multiple trans-puters.

For further information, contact: U-Microcomputers Ltd, 12 Chetham Court,Calver Road, Winwick Quay, Warrington,Cheshire WA2 8RF, UK. Tel.: 092554117.

Specialized thermal analysis soft-ware from Perkin-Elmer

Perkin-Elmer offer a range ofspecial-ized software programs for their DSC7 Differential Scanning Calorimeterrun by an Epson PC (TM) or IBM(R) PS-2. Purity software is used todetermine the purity of most crystal-line organic materials. The method isbased on the van’t Hofflaw and doesnot require a pure standard of thematerial for calibration purposes.Results are quoted mole percent pur-ity and can be plotted, together withthe calorimetric data, on to an A4plotter. Total analysis time is around20 min, including sample prepara-tion.

For further information, contact: Perkin-Elmer Limited, Maxwell Road, Beacons-field, Bucks HP9 1QA, UK. Tel.: 0494676161.

Coulometric Karl Fischer Titratorfor low-level moisture determina-tions

The Model 684 Karl Fischer titratorautomates coulometric moisturemeasurements from 10 tg to 10 mg.

The Model 684 provides results with30 s at a maximum titration rate of 2mg min-1. It’s features include elimi-nation of standardization by generat-ing it’s own reagents, self-calibration(absolute measurements eliminatethe need for calibration) and user-friendliness. An alpha-numericreadout displays results in percent orppm water and cell conditions. Thereis no need for coding since titrationprocedure keys are clearly labelled onthe front panel. The Model 684 canbe connected to a computer orprinter for data output.

The Karl Fischer Model 684 is idealfor the determination of water insolvents, pharmaceuticals, petro-chemicals, Chemicals and fats andoils.

For further information, contact V. A.Howe and Co. Limited, 12-14 St. Ann’sCrescent, London SW18 2LS, UK. Tel.:01-874 04220.

Metrohm Karl Fischer titratorstreamlines amperometricmeasurement

The Metrohm Model 658 KarlFischer titrator streamlines ampero-metric measurement with operatorprompts at every step of each pro-cedure on a 16-digit alphanumericdisplay. It features a built-in stan-dardization program in which resultsare calculated and printed in min orless and automatically stored forfuture use, and measures solid, liquidor gaseous samples from to 100 mg(0.001% to 100% H20).

The Model 658 is easy to operate; allprocedures require just one key-stroke, and a built-in printer docu-ments all results. An electronicbalance can be coupled to the Model658 to further automate the system;automation can be completed byinterfacing to a central or host com-puter.

For further information, contact: V. A.Howe and Co. Limited, 12-14 St. Ann’sCrescent, London SW18 2LS, UK. Tel.:O1 984 0422.

Oil monitoring simplified

Radiometer has introduced a dedi-cated oil analysis plug-in option

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package for its TitraLab automatedlaboratory system. With a TAN/TBN method module added, theTitraLab system can rapidly andaccurately determine important oildata. For instance, strong acid num-ber (SAN) and total acid number(TAN) or strong base number (SBN)and total base number (TBN) cannow be determined in a single poten-tiometric titration. The results aregiven automatically in mgKOH/g.

For further information, contact:Radiometer Ltd, Manor Royal, Crawley,West Sussex RHIO 2PY, UK. Tel.: 0293517599.

Laboratory robotic systems forautomated titrations

Zymark Corporation has developedseveral laboratory robotic systemsdesigned to automate general pur-pose and Karl Fischer titrations.Using PyTechnology hardware,these robotic systems handle thepreparation of liquids, viscousliquids and solid samples. Thesamples are prepared by the robot, ina sequence that is specified by theoperator, and placed directly into thetitration cell. The robot starts thetitrator and monitors all operationsto ensure a proper titration. Whenthe titration is complete, the resultsare sent back to the robot and fulldocumentation is provided. As therobot has full control over the titra-tor, any problems that are encoun-tered with the samples are reportedto the operator.

Several key benefits of a fully auto-mated titration system are: unatten-ded operation frees up the lab per-sonnel; unattended operation pro-vides greater sample throughput;reproducible operations improvesthe accuracy and precision of thedata; provides the full documenta-tion of the results; and reduces thecost per sample, as more samples canbe run with less operator interven-tion. Several commercially availabletitrators can be interfaced with therobotic system, offering a full line oftitration capabilities.

Forfurther information, contact: ZymarkCorporation, Zymark Center, Hopkinton,MA O1748, USA. Tel.: 508 435 9501.

Laboratory robotic systemsfor automatic titrationsfrom Zymark.

Titration in Progress

A new 16-page colour brochure fromRadiometer gives a full survey of allthe titration systems offered by thecompany, and outlines selectioncriteria for the ideal titration system.

The brochure is available, free ofcharge, in either English or German.Data sheets for individual instru-ments are also available.

For further information, contact: Radio-meter Analytical A/S, 49 Krogshojvej,DK-2880 Bagsvaerd, Denmark. Tel.: 451 696311.

Accelerated surface area andporosimetry analyser

Micromeritics has introduced theASAP 2000, an automated, single-

port surface area analyser. The ana-lyser can use a wide range ofadsorbategases, including nitrogen, krypton,oxygen, argon and carbon dioxide. Asecond analyser can be added to worksimultaneously via the single controlmodule. Up to 50 different reportformats can be created and storedon-line.

Features include: multitasking soft-ware; ’smart dosing’, a routine whichcalculates the rate of adsorption bythe sample for each pressure pointand then adjusts the volume of gasfor the following dose; pre-definedanalysis parameters (up to 50 runcondition sets can be stored); anddata archiving, where up to 6000analysis data files can be storedon-line, up to 200 directories createdand data can be converted intoASCII format.

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New products

Accurate results are obtained withthe help of the saturation pressuretube, which is positioned alongsidethe analysis port so that measure-ments are made under exactly thesame conditions as the analysis inprogress. The use ofpatented isother-mal jackets eliminates dead spaceerror and allows analyses to rununattended for up to 60 hours.Independent vacuum systems isolatethe sample prepar tion stations fromthe analysis port and eliminate thepossibility of cross-contamination.Two distinct cold-traps preventbackstreaming of contaminatingvapours.

For further information, contact:Micromeritics, 1 Micromeritics Drive,Norcross, GA 30093-1877, USA. Tel.:404 662 3660.

Automatic sampler for particlesize analyser

Micromeritics has announced theMasterTech 51, an automaticsampler accessory for the SediGraph5100 particle size analyser. The Sedi-Graph 5100/MasterTech 51 systemcan analyse 1-18 samples automatic-ally in sequence and completely un-attended. When the SediGraph 5100is ready for another sample it signalsto the MasterTech 51. Mechanicaland ultrasonic agitation built into theMasterTech 51 will redisperse thenext sample to it’s original level ofdispersion. The MasterTech 51 thentransfers the redispersed sample tothe SediGraph 5100 for analysis andreporting. All of these operations,including backflush and rinse of thesample-transfer tubing and redisper-sion apparatus, are accomplishedautomatically. Control of all opera-tions is handled by the SediGraph5100 Controller/Data ManagementModule. Like hiring a Master Tech-nician, the SediGraph 5100/Master-Tech 51 system allows both unatten-ded and after-hours operation. Allanalyses are performed exactly asspecified without requiring the oper-ator to be present. As with theSediGraph 5100, the MasterTech 51will adapt to local voltages.

For further information, contact:Micromeritics, 1 Micromeritics Drive,Norcross, GA 30093 1877, USA. Tel.:404 662 3633.

Automatic samplerfor particle size analysis (Micromeritics).

Streamlined checkweighing oper-ations

Sartorius Limited has introduced theCheckweigher into its family of pre-cision balances and scales. The newproduct can be used with the Sar-torius IB range of scales to provide afast, easily identifiable method ofcheck weighing. It uses a simplered/green/red display, which worksin conjunction with pre-determinedlimits set into the scale, to indicate ata glance overweight, underweight orcorrect weight products.

To commence a typical checkweigh-ing process, the operator first entersboth the upper and lower acceptableweight limits into the keypad, taresthe scale in order to take into accountthe weight of container and placesthe object to be weighed on to thepan. If the net weight displayed fallswithin the pre-programmed limits,the green indicator is illuminated ona separate display consol. If,however, the net weight is below theacceptable limit, a red light is dis-played on the left-hand side of theunit and if heavier than required, ared light on the right-hand side oftheunit shows. The programmed figuresare retained by the Checkweigheruntil altered by the operator.

ity to 31 kg to an accuracy of 0.1 gand has a multitude of applications.The light display console can actu-ally be plugged into any Sartoriusindustrial scale, together with a ’plusperformance’ keypad to providefurther checkweighing systems.

The Checkweigher can be used formobile weighing using a recharge-able battery pack and the system canalso be linked to a Sartorius Sartopacto provide an instant print-out ofoperations. This is particularly usefulin average weight work for the pur-pose of statistics and for providingrecords for trading standards.

The system automatically performs a

self-diagnostic check on power-upwhich ensures that consistent accu-racy is maintained at all times. If, inthe unlikely event of failure, a faultoccurs, a code is displayed to indicatethe area in which the problem hasdeveloped.

Forfurther information contact: SartoriusLimited, Longmead, Blenheim Road,Epsom, Surrey KT19 9QN, UK. Tel.:03727 45811.

Electronic label printer for weigh-ing data

Together with the IB scales, the newCheckweigher has a weighing capac-

Mettler have introduced an elec-tronic label printer which can be

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New products

connected to all the MultiRangeprecision scales for weights between0"1 mg and 600 kg via the datainterface option 089 of the Multi-Range ID5 Control Terminal. Thelabel printer uses EAN/UPC and allcommon industrial bar codes. Thesize and design of the printout canbe determined by the user. Labellengths of 60 and 120 mm are pos-sible with single tasking. There is a

choice of 16 print sizes and characterfonts.

For further information, contact: MettlerInstruments A G, CH-8606 Greifensee,Switzerland. Tel.: O1 944 211.

Control terminal for weighing

The ID5 Control Terminal fromMettler can be used with all Multi-Range weighing platforms. Threescales can be controlled via the singlekeypad terminal. The dynamic dis-play acknowledges each function inclear text. There is an attachablealphanumeric strip printer to ensurereliable and certified result records ot"the weighing data.

For further information, contact: MeltlerInstruments A G, CH-8606 Greifensee,Switzerland. Tel.: O1 944 3090.

Microplate management system

Zymark have introduced a new

system package for microplatemanagement which includes all theworkstations required to perform abasic microplate assay plus on-benchstorage capacity for disposables toallow processing of up to 30 platesper run.

The Microplate Management Soft-ware Library, written in EasyLab, isprovided with the system and con-tains subroutines to control work-station activity. An applications pro-gram written specifically for the cus-tomer’s assay is also available. Thiscan be modified so that systematicchanges in critical assay variablescan be evaluated.

Customers can order from a list ofoptional workstations to expand thefunctionality of the system.

The most common application for theZymark Microplate Management

System is ELISAs. Other automatedapplications include LAL endotoxintesting, drug and pesticide screening,total protein determinations andenzyme quality assurance.

For further information, contact: ZymarkCorporation, Zymark Center, Hopkinton,MA O1748, USA. Tel.: 508 435,9501.

Specific protein analyzer fromTechnicon

Technicon Instruments haveannounced the launch of the DPA- 1,a specific protein analyzer for proteintesting in the clinical laboratorywhich combines the high perform-ance of rate nephelometry and theflexibility of random access analysis.The DPA-1 introduces innovativetechnology, allowing a multiple num-ber ofsamples to be monitored whilstsimultaneously yielding a through-put of up to 180 reportable patientresults per hour.

The fully automated compact systemwill hold up to 45 patient samplesand can be continuously loaded dur-ing operation. Each of the 12 residentliquid stable antisera are bar-codedto facilitate automatic entry of lotnumber, expiry data and calibrationparameters. CRP reagent requires nooff-line preparation and rheumatoidfactor testing is accommodated with-out any impact on system through-put.

For economy and convenience, theDPA-1 requires only a single pointcalibration once every month.Specimens are automaticallyhatched so that serum samples aretested separately from cerebrospinalor urine samples, thus ensuringgreater productivity. Specific test

panels are programmed as desired sothat a number of tests are selected bya single keystroke. The entire testmenu can be arranged to suit theindividual requirements of the user.DPA-1 software incorporates novelalgorithms for automatic detection ofexcess antigen, and samples fillingabove or below a pre-defined rangeare also automatically re-run. A bi-directional interface allows transferof sample programme and patientdata between the DPA-1 and anexternal computer.

For further information, contact.: Tech-nicon Instruments Company Limited. Tel.:0256 29181.

Biochemical analyser from Tech-nicon

AXON, from Technicon, is a ran-

dom access, medium throughput bio-chemistry analyser with high elec-trolyte capability. The system willanalyse 96 samples per hour (576tests) for ISE and up to four col-orimetric channels from an on-boardtest menu of 60 methods includinguser-definable assays. Reactioncurve monitoring, on-board datastorage, full demographic entry anddefinable report formatting are justfour of the features of the userfriendly, function drive, full coloursoftware.

Barcode labelling of both reagentsand primary sample tubes ensuresease ofoperation and minimum oper-ator intervention. Approximately 40methods will be available at launch,including immunoassay and specificproteins. Many of the reagents willrequire no preparation prior to place-ment on the system where it will berecognized by its barcode. Likewisebarcoded primary containers may beplaced in any sequence on the sampletray. Separate positions are pro-vided for STAT and quality controlsamples.

AXON is designed for economicaloperation utilizing a combination oflow reagent volumes (average 250-300 gl) and an on-board self-launder-ing system.

For further information, contact: Tech-nicon, tel.: 0256 29181.

Spectroscopic ellipsometermeasures film thickness

An instrument for measuring filmthickness in the optical and semicon-ductor industries is now availablefrom Spectrolab. The new instru-ment, called ’MOSS’, is a spectro-scopic ellipsometer, capable ofmeasuring the thickness of both sin-gle and multiple layers of materialsdeposited on a variety of substrates.The instrument incorporates a veryaccurate ellipsometer employing a

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collimated white light source that ismade incident on the samples by wayof a rotating polariser. Measurementof elliptically polarised light is madeusing a fixed analyser polariser and adouble monochromator coupledoptically to the ellipsometer. Thesystem is therefore able to measureoptical parameters at anywavelength between 300 nm and thenear infrared, or throughout theinfrared when used in conjunctionwith an FT interferometer.

MOSS is supplied with a completesoftware package suitable for bothon- and off-line analysis, also forsimulating the optical parameters ofsingle or multiple films on a variety ofsubstrates. Measurements can bemade in real-time using a multi-channel analyser enabling film qual-ity and thickness to be measuredduring the manufacturing process.

For further information, contact: Spec-trolab Limited, P.O. Box 25, Newbury,Berks RG16 8BQ UK. Tel.: 063524808.

Servodyne mixer from Cole-Parmer

Cole-Parmer Instrument Companyhas introduced microprocessor-con-trolled Servodyne mixers. The Ser-vodyne system maintains and repro-duces a constant mixing speed usinga precision optical shaft encoder inthe mixer head which sends exactmotor rotation speed data to thecontroller. This allows constantspeed despite changes in viscosity,temperature and power line voltage.The Servodyne monitors torque andprevents over-stirring or damage tocritical fluids by automatically turn-ing off and sounding an alarm. Aunique zero torque mode allowsmonitoring and control ofdifferentialtorque and the torque reading can beused to determine viscosity directlyor, alternatively, a RS-232-C com-

puter link is available to convert thetorque output to viscosity units.

The mixer head on the Servodynesystem features a through-collet shaftand precision collet for fast settingand infinitely adjustable propeller/shaft height. The controller features afour-digit vacuum fluorescent dis-play that indicates all parameter set

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points and actual conditions. Setparameters can be stored in thecontroller’s memory as long as linepower is maintained.

For further information, contact: Cole-Parmer Instrument Company, 7425 N.Oak Park Avenue, Chicago, IL 60648,USA. Tel.: 800 323 4340.

Servodyne mixerfrom Cole-Parmer.

Automated water analyserreduces labour costs

ChemLab Scientific Products hasdeveloped an analyser, particularlyfor the water industry, which auto-mates four of the most labour-inten-sive procedures in the analytical lab-oratory. The CSP Water Analysersimultaneously measures pH, con-ductivity, colour and turbidity at

approximately 60 samples per hour.All the methods employed follow thestandard ’Blue Book’ procedures,including the colour determinationwhich is carried out on a filteredsample. Up to 80 samples can beloaded on to the turntable at any onetime. It is estimated that 2.5 man

days per week can be saved by usingthis novel analyser.

For further information, contact: Chem-Lab Scientifc Products Ltd, ConstructionHouse, Grenfell Avenue, Hornchurch,Essex RM12 4EH, UK. Tel.: 0402476162.

Effluent monitor alarm system

Ionics Ltd have introduced a failsafealarm unit to draw attention to any

failure in carrier gas, compressed airand reagent supplies to its 6800Series of TC/TOC process analysismonitors. The unit is of particularinterest to plants where the monitorsare stationed at a remote site or arenormally checked infrequently.

The new alarm unit checks sampleflow, carrier gas pressures, air flows,furnace temperatures and, for TOCmonitors, acid inputs. Mounted in itsown enclosure, the alarm system iswired and plumbed to the analyserwith a separate terminal strip forcontact wiring. The same contactclosure (or opening) provides a signaloutput to the operator’s instrumentpanel. In addition a recorder can bemounted directly into the 6800 Seriessystem to provide a permanentrecord of signals.

For further information, contact: IonicsUK Ltd, Carrington Business Park, Car-rington, Urmston, Manchester M33 4DD,UK. Tel.: 061 776 4500.

Heli-flow combined reaction cellfor flow injection analysis

Heli-flow, from WPA, offers a new

approach to flow injection analysis,and brings this much discussedanalytical technique within theprice range of small laboratories.

Designed for reliability and ease ofuse, Heli-flow gives accurate, repro-ducible analyses using only a fewmicrolitres of sample and reagent.The spectrophotometric detector,flow cell, two peristaltic pumps,heater and the unique, patented,Heli-flow combined reaction cell,manifold and injection valve are allcontained within a single instrumentwith a footprint of only 350 by 250mm. The complete Heli-flow systemcosts less than 3000 compared withmore than 10 000 for a conventionalflow injection analysis system.

WPA have also introduced two newbench conductivity meters. TheCMD630 and CMD650 are bothdesigned for professional applica-tions, with large digital displays andhigh levels of accuracy, reliabilityand repeatability. Amongst theirfeatures are automatic and manualtemperature compensation, multi-range facilities, and variable cell

New products

Heli-Flowfrom WPA instruments.

Turbo Vap evaporatorfrom Zymark.

constant and temperature coeffi-cient.

For further information, contact: WPALtd, The Old Station, Linton, CambridgeCB1 6NW, UK. Tel.: 0223 892688.

Automatic, high speed endpointevaporators

Zymark have developed TurboCapautomatic, high speed, selectableendpoint evaporators. Key featuresinclude: evaporation rates of up to 5ml min-1; selectable endpoint vol-umes; automatic solvent exchangeduring evaporation; microprocessorcontrol; multiple sample capacity;laboratory bench operation.

For further information, contact: ZymarkCorporation, Zymark Center, Hopkinton,MA O1748, USA. Tel.: 508 435 9501.

Fully automated basket dissolu-tion testing from Zymark

The Zymate II Laboratory RoboticsSystem for automated dissolutiontesting has been updated to accom-modate both the paddle and basketmethods. This fully automated dis-solution testing system complies tothe USP compendial procedures fortablets or capsule oral dosage formsin the pharmaceutical industry. Thesystem combines the Zymate IIRobot System and specialized disso-lution accessories, the Van-Kel dis-solution bath and a UV/VIS spectro-photometer or HPLC of choice.

Communication to the dissolutiontester through a unique interfaceallows the system to set rotationspeed for either baskets or paddles.Special telescoping shafts for basketsprovide individual starts for eachvessel. Internal timers are set foreach vessel for accurate and precisetiming.

For each assay of basket dissolutiontesting, the system adds media, runsstandards and blanks for UV/VIS,monitors media background,attaches the baskets containing thesamples and lowers the shafts, andanalyses the samples by UV/VIS orHPLC. The system then washes thevessels and baskets, raises shafts and

145

New products

detaches the baskets, prints thereport as it prepares for the next set ofassays.

The system is preprogrammed torun the prednisone USP calibrator.Then, easy to follow menu-drivenscreens allow the input of productspecific parameters for individualapplications. Product templates havebeen created to make tasks like run-

ning single or multiple point assays,or enteric coated samples thatrequire media change easier.

For further information, contact." ZymarkCorporation, Zymark Center, Hopkinton,MA 01748, USA. Tel." 508 435 9501.

Automated system for the analysisof drugs in biological fluids

Zymark Corporation has announceda robotic system that completelyautomates the preparation and directliquid chromatographic injection ofbiological fluid samples. The systemincorporates Zymark’s latestimprovements in hardware and soft-ware including: TurboChip forincreased controller processing speedand higher sample throughput;PyTechnology 1I featuring improvedspace utilization allowing multi-method operation and new errorrecovery routines for enhancedreliability; and Tumble Mixer Work-station that reduces emulsion forma-tion when extracting serum, plasmaand urine samples. Also included isthe Cooled Sample Input Rack tomaintain samples at low temperatureprior to analysis.

This fully automated system offersimproved precision of analyticalresults since all samples are handledin exactly the same manner and inthe same time sequence. PyTechnol-ogy’s multi-method flexibility lets theoperator quickly change the hard-ware and method software to accom-modate more than one procedure ona single benchtop. The drugs inbiological fluids system also providesa machine generated audit trail as itverifies all liquid and solid additionsvia gravimetric tracking.

For further information contact" ZymarkCorporation, Zymark Center, Hopkinton,MA 01748, USA. Tel." 508 435 9501.

New dissolved oxygen meter andoxygen electrode

A dissolved oxygen meter by WPI,model DO2M, features OXEL, aminiature 3 mm (tip diameter) oxy-gen electrode including a replaceablemembrane and electrolyte kit.DO2M will operate for more than1000 hours on the same set of AAbatteries. The liquid crystal digitalpanel meter reads directly in percen-tage oxygen, ppm or nanoamperes ofelectrode redox current. A recorderoutput connector allows the user torecord the electrode oxygen redoxcurrent.

For further information, contact." WorldPrecision Instruments, 375 QuinnipiacAvenue, New Haven, CT 06513, USA.Tel." 203 469 8281.

On-line analyser measures per-cent oxygen content

Teledyne’s Model 326 provides reli-able, economical monitoring ofpercentage oxygen in a wide range ofgases and gas mixtures. Measuringranges from 0-1% to 0-100% areavailable with an option of up to 10atmospheres partial pressure oxygenfor hyperbaric applications.

The high accuracy, fast responseModel 326R is available in aweather-resistant bulkhead mount-ing housing or a panel mountingmodel for general purpose areas.

Explosion-proof and intrinsicallysafe versions can be provided withcertain models to CENELEC stan-dards.

Dissolved oxygen meter and oxygen electrodefrom World Precision Instruments.

146

New products

The principle of measurement in theModel 326R is the Teledyne micro-fuel cell. This maintenance-free elec-trochemical device is well proven andis unaffected by almost all gasesincluding hydrocarbons. Addedadvantages of this sensor are theabsolute zero which means no zerogas is required and a linear outputwhich allows air to be used as calib-ration gas irrespective of measuringrange. Further features are its robust-ness, the low-affect of vibration andchanges in flow rate. The standardModel 326 includes three selectableranges, analog meter readout andO-IVDC signal output, normaloptions are available.

Forfurther information, contact: TeledyneAnalytical Instruments, The HarlequinCentre, Southall Lane, Southall, Mid-dlesex UB25NH, UK. Tel.: O1 5719596.

9150 Flue gas CO and O2 analysissystem

Teledyne Analytical Instruments hasdramatically cut the cost of flue gasanalysis with the Model 9150, atwo-in-one flue gas analyser thatmonitors both oxygen and carbonmonoxide. This dual-sensor analyseris equipped with an air aspiratedsample system. It comes standardwith three percentage oxygen ranges,0-5%, 0-10% and 0-25%, and twocarbon monoxide ranges, 0-500 ppmand 0-1000 ppm. The system ishoused in a rugged enclosure ratedNEMA 4, 12, and 13 and IP 55.Options include customised rangesand output signals, and digital or

analog meters.

For further information contact: TeledyneAnalytical Instruments, The HarlequinCentre, Southall Lane, Southall, Mid-dlesex UB25NH, UK. Tel.: O1 5719596.

New agents for Saftronics 2S

The recent appointment of agents inNorway and Portugal means thatSaftronics 2S Ltd of Leeds, manu-facturer of solid-state soft starters forAC motors, is now represented inevery country throughout Europeand Scandinavia.

The new agents are: (1) Lonne Mas-kin A/S, Liamyrange 12, N-5090Nyborg, Norway. Tel.: 010 47 5186200; and (2) Teclena, AV 25Abril, Lote 19 R/C Esq, PO Box 249,2403 Leiria Codex, Portugal. Tel.:010 351 44 26026/33360.

’We have established this representa-tion in Europe and Scandinavia bothbecause there is a strong demand forour products and in order to provideeffective support for our overseascustomers,’ comments Chris Sander-son, sales and marketing director forSaftronics 2S.

Every agent carries the company’sfull range ofsoftstarters- the SFTRNSS210 (0"37 to 4"0 kW), SS220 (2.2 to800 kW) and SS230 (11 to 375 kW)with tacho-feedback for linearacceleration/deceleration. Full train-ing is provided on its products for allagents at the company’s Leeds pre-mises.

Forfurther information, contact: Saftron-ics 2S Limited, Pearson Street, LeedsLSIO 1B@ UK. Tel.: 0532 457170.

Analytical investment by RAPRA

As an extension to the material cha-racterisation capabilities at Rapra, astate of the art infrared spectrometer,fitted with an in-line microscope, hasrecently been installed.

Infrared spectroscopy is amongst theestablished analytical methodsoffered to companies by Rapra andhas a key technical input. Visiblelight microscopy, by virtue of itsprobing and diagnostic ability, is alsoan essential technique for materialexamination. By combining the twotechniques in a single instrumentRapra can now provide an unrivalledfacility for the identification of con-taminants, fibres, defects, etc., andfor detailed compositional mappingor morphological studies on poly-mers.

The microscope component is a fullresearch grade instrument with highperformance optics and is fitted withits own dedicated detector. Infraredspectra are recorded through themicroscope and can be achieved

either by reflection or transmissiontechniques. A video camera/colourmonitor system is employed for sam-ple examination. A photographicrecord of samples examined can alsobe obtained.

Forfurther details ofhow this can helpyou,contact: Rapra Technology Limited,Shawbury, Shrewsbury, Shropshire SY44NR, UK. Tel.: 0939 250383.

P S Analytical move to new largerpremises

P S Analytical have recently movedtheir offices and production facilitiesto: Arthur House, B4 Chaucer Busi-ness Park, Watery Lane, Kemsing,Sevenoaks, Kent TN15 6QY. Origi-nally set up in 1983, P S Analyticalhas developed a wide range of acces-sories and modules primarily in thetrace elemental analysis marketplace. These products include thePSA 10.003 Vapour Generator, arange of autosamplers as well ascustomised automatic analysissystems, for example, automatic den-sity/refractive index systems andautomated pH and conductivitysystems. End-user sales, as well asOEM accounts, are handled by themanufacturing capabilities.

The improved facilities and addi-tional space will, according to DrP. B. Stockwell, Managing Director,provide an ideal platform to capital-ise on recent developments and toincrease production output in linewith sales achieved, primarily formercury determination. The launchof the new Merlin FluorescenceDetector has required increasing pro-duction facilities to meet the con-siderable demand. Since the firstunits were shipped in October 1988,20 units have already been installed.The added space will also enable newproducts already in development tobe rapidly brought to the marketplace.

For further details of the products in theP S Analytical portfolio and our skills inLaboratory automation, please contact MrJ. E. Bangerter at our new premises. Tel.:0732 63416; Telex: 957645 PSA G; .Fax:0732 61340.

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