Product ews - Hindawi Publishing...

Product ewsPressure regulatorsTescom Corporation have extendedtheir 44-2200 series of pressureregulators to meet the requirementsfor fluids regulation in semiconductorand electrical component manufactur-ing processes. High purity, corrosiveand poisonous fluids at pressures up to3000 psig can be accurately regulatedby the stainless steel model 44-2260All parts which are exposed to theflowing media are constructed of 316stainless steel with only one soft sealwhich is a Teflon seat. Problemsassociated with soft seals are overcomeby a metal to metal diaphragm seal be-ween the regulators body and bonnet. Aspecially designed convoluted stainlesssteel diaphragm provides stable regula-tion of delivery pressure. Four outletranges are available which suit differentmanufacturing cell requirements. Theregulator has an optional gas-sealed bon-net which helps prevent contaminationof the work area in the event of adiaphragm failure or overload.Techmation Ltd, 58 Edgware Way,Edgware, Middx, UK.

Density measuring instrumentLaboratory Impex have introduced theBerthold density measuring instrument,the LB379, for continuous solutiondensity measurement. The stainless steel

The Fisher Titrimeter HAEP titration system

titration curve recording. The recorderwill register the potential versus timecurves when performing trace metalanalysis with their ion scanning systemand when connected to their con-ductivity meter, a conductometric curverecording is obtained.Radiometer A/S, Emdrupvef 72, DK-2400, Copenhagen NV, Denmark.

Clinical thermometerThe Digitron 4701 and 4702 electronicclinical thermometers from Electroplanare instruments designed to replacemercury-in-glass type thermometers. The

instrument operates on a scintillation probes consist of precision thermistors

counting basis and has the advantage of in flexible plastic sheaths that may be.chemically sterilised. The 3-digit LEDgiving continuous measurement with

contact with the medium involved. It display gives a resolution of 0.1 C with

can be used to determine liquid concen- an accuracy of + 0.1C over the range

tration in a wide range of situations, 33"43C"including sugar refining, milk processing, A wide variety of probes are available

acids, lyes and salt solutions. A special for different applications such as surfacemeasurements as well as an optionallining for aggressive or abrasive media

is available. The sample density signal rechargeable battery pack

output from the detector is both Electroplan L td, PO Box 19, OrchardRoad, Royston, Herts SG8 5HH, UK.linearised and temperature compensated;

the reading is displayed on the amplifierand readout unit used with the detector.Laboratory Impex Ltd, Lion Road,Twickenham, Middx, UK.

Servo-recorderRadiometer has announced the REC80Servo-Graph, a servo recorder for generalpurpose applications in the analyticallaboratory. It is driven by a steppingmotor and has reversible, calibratedchart feed between ls/cm and 2h/cm.Response time of the servo driven pen

UV-visible spectrophotometersTwo microcomputer controlled scanningspectrophotometers, the DMS 80 and theDMS 90 have been introduced byVarian. Both instruments are compact,rugged and have been designed forroutine and non-routine analytical andresearch laboratories. The software forthe built-in Intel 8085A microcomputerhas been programmed specifically withthe operator in mind. Key featuresinclude simple operation parameterselection, auto-zeroing, a wide range of

is less than 0.6 s. It is suitable for high- photometric modes, single or doublesensitivity analogue recording down to beam versatility, sealed high energy4 uV/cm and for pH, pX and redox optics and external computer compati-recordings. In conjunction with their bility.titration system it will perform con- Varian A G, Steinhauserstrasse, CH-6300ventional, stepped and derivative Zug, Switzerland.

Continous flowanalysis equipmentChemLab Instruments have published acatalogue for their complete range ofautomatic continuous flow analysisequipment. It contains information onall the equipment available, includingthe latest designs of high temperatureand dialysis baths, CAAII type analyticalcartridges and peristaltic pumps with’stand-by’ facility.A brief description is given of the two

systems which have evolved since theconcept of flow analysis was first intro-duced and of the methodologies evolvedsince the concept of flow analysis wasfirst introduced, and of the method-ologies which can be carded out onthem.ChemLab Instruments L td, HornminsterHouse, 129 Upminster Road, Horn-church, UK.

Titration systemThe Titrimeter II AEP System fromFisher is a semi-automatic single-sample titrating system. It can operatein both fixed-endpoint and endpoint-seeking modes and can handle aqueousand non-aqueous samples. The systemcan titrate to all equivalence pointswithin limits set by the user, calculateand printout all endpoints and provide avolume derivative recording of results.In both modes, endpoint approaches areproportionally controlled, with titrantdelivery rate continually decreasingasthe endpoint is approached. Limits forendpoint seeking titrations and fixedendpoints are set directly on digitalswitches. Microprocessor control auto-matically delivers titrant and thedispensed titrant volume is continuouslydisplayed on a LED readout.Fisher Scientific Co, 711 Forbes A re,Pittsburgh, PA 15219, USA.

Volume 2 No. 3 July 1980 165

Product News

Automatic burette with the BASIC II programmabilityRadiometer has announced a-new auto- allows twoway data transfer under syn-matic burette, the ABU80 Autoburette, chronised control to a mainframefor high-precison, computerised titrant computer.delivery. The two-in-one burette The Sigma 10B/2 supports dataassemblies are available in the versions 25 collection from 2 chromatographs inml/2.5ml, 10 ml/1.0 ml and 2.5 ml/0.25 addition to the other features of theml and are seated within the housing for Sigma 10B/4. Both models when usedmaximum protection. The autoburette with the AS-100 liquid autosampler cancan be set to manual or fully automatic provide total automated control via aoperation. BCD reader and BASIC II.

The chemically resistant stopcockis Perkin-Elmer L td, Post Office Lane,grease-free. Eleven titration speeds Beaconsfield, Bucks HP9 1QA, UK.between 5 and 160% of total burettevol/min assure optimal titrationconditions. Titrant bottles are availablein both clear and amber glass. A specialflush programme at start-up ensure thatall tubings are filled with fresh titrantand that all air bubbles are expelled.Radiometer A/S, Emdrupvej 72, DK-2400, Copenhagen NV, Denmark.

Chromatography data stationsPerkin-Elmer have introduced newversions of their Sigma 10 data station,the Sigma 10B/2 and Sigma 10B/4

Coal analyserFisher Scientific has announced theintroduction of the Model 490 Coalanalyser. This instrument analyses asingle sample for % moisture, volatiles,ash and fixed carbon. The analyser canprocess up to 80 samples in a day’s runand the results are claimed to meet orexceed repeatability and reproducibilityrequirements of ASTM method D3172,the proximate analysis of coal and coke.

The analyser contains oven, furnace,desiccator, and microprocessor modules

which offer greater flexibility of con- in a self-contained unit. It also comesfiguration than the previous systems, equipped with an interface for the

The Sigma 10B/4 can simultaneously Mettler A-30 high-speed balance forsupport data collection and reduction automatic sample weight entry. Thefrom 4 chromatographs, data storage analyser can be used for applications inand retrieval from a magnetic tape the food andchemicalindustries.cassette and an RS232Ccommunications Fisher Scientific Co, 711 Forbes Ave,port. The latter facility when combined Pittsburgh, Pa 15219, USA.

Automatic titration systemRadiometer has announced a new880 Kappa number titration system forthe determination of the Kappa numberof pulp. After transferring the pulpsample and sulphuric acid to the litrereaction vessel and depression of thestart button, the analysis is performedautomatically. The necessary reagentsare added at the required time intervals,and the final redox titration with thio-sulphate is potentiometrically controlledand stopped precisely at the end-point.The volume of thiosulphate consumed isindicated on a 4-digit LED display. Therepeatability of the ’Kappa number’determination is 1%.Radiometer A/S, Emdruve] 72, DK-2400Copenhagen NV, Denmark.

Radioimmunassay standardsAdvanced Laboratory Techniques hasavailable a complete range of standardsfor the radioimmunoassay of T4, T3,h-TSH, alpha fetoprotein, prolactin anddigoxin. These standards are suppliedeither in liquid or lyophilised formacross a range suitable to run at leastfive complete standard curves, and arestable either deep-frozen or at 4C(lyophilised) for a minimum of sixmonths.Advanced Laboratory Techniques,Clanricarde Gardens, Tunbridge Wells,Kent, UK.

1 AUTOSAMPLER COLUMN/INJECTOR MINI-CASSETTE

DETECTORS

IOTwo CHANNEL INTEGRATO

166

4 PUMPS ACCESSIBILITY ALPHANUMERIC KEYBOARD

Journal of Automatic Chemistry

Product News

Diluter/dispenserV A Howe and Co is now marketing amicroprocessor controlled diluter/dispenser, the Microlab M. This instru-ment is designed to fulfil all dispensingand dilution applications in clinicallaboratories. The unit incorporates ahigh resolution, high performance step-per motor with synchronised motordriven valve block. An integratedstandard EIA RS 232 C interface isavailable. It can accommodate allstandard Hamilton precision syringesfrom 50 ktl to 25 ml. The instrument isoperated by an external control unitwith an integrated keyboard and dis-play. A total of 99 programs including384 individual volume steps or functionscan be stored. The algebraic input allowsthe instrument to be programmed in thediluter mode with an air bubble between

toring. Operator controls system func-tions from an easy-to-read keyboard,and programs can be designed for un-attended analyses and chromatographicdata processing. Digital tape cassette isoptional and can be used to build amethods library for error-free runs withninimal system set-up time.

Both instruments offer pulse-freesolvent delivery and may be operatedin either isocratic, gradient or ternarymode with optimal components. TheModules capable of stand-alone oper-ation. The model 324 operates atpressures up to 10,000 psi and the mod-el 334 operates at pressures up to6,000 psi.Altex Scientific Inc, 1780 FourthStreet, Berkeley, CA 94710, USA.

the sample and the diluent. Automated data handlingV A Howe & Co L td, 88 Peterborough Technicon Industrial Systems haveRoad, London SW6, UK. announced the introduction of their

AutoAnalyzer IIC system for fully-automated data handling and instrument

Modular HPLC systems with CRT control. The system consists of threecontroller modules, microprocessor, an automaticAltex have introduced two new HPLC valve and an input/output terminal.systems, models 324 and 334, each has The new system is an addition to thea CRT controller which allows easier existing continuous flow analyticaloperation and simplified methods devel- systems, the basic systems utilised toopment. More efficient software, a automate over 500 different wetmultifield display and larger memory chemical analyses. It extends automationcapacity provides total system moni- beyond the wet chemical analysis,

providing automated start-up and shut-down of the instrument, and fullautomation of data-handling, correctedand real-time, using the latest peak-picking technology with corrections fordrift, sensitivity and carryover.Continuous-flow functions, such as peakshapes, are routinely monitored andflagged, if abnormal or outside limitspreviously set in the programme. Theoutput is provided in final report form.It is available with up to four-channelcapability.Technicon Industrial Systems, Tarry-town, New York 10591, USA.

Translation stages and linearmicro-actuatorsUnimatic Engineers have introducedtheir Micro-Control UT range of tran-slation stages, with linear travel fromto 125 mm. These stages can acceptloads of up to 25 kg and developpositioning speeds up to 2 mm/sec, witha positioning resolution from 0.1 u. TheUT-100 units are modular and can ’beused with linear, xy or multi-axissystems. They are primarily used inphysics/optics research, in the con-struction of optical instruments and inthe micro-electronics industry.Unimatic Engineers L td, Granville RoadWorks, 122 Granville Rd, Cricklewood,London NW2, UK.

Ten Good Reasons for Investing in LDC’sSuccessful CCM-Based System for HPLC...

8 PRINTER-PLOTTER

9 VIDEO DISPLAY

Volume 2 No. 3 July 1980

Automatic sample injection with search facility2 Easy access to column compartment for maximum flexibility;3 Wide choice of detection options available:UV III Monitor fixed wavelength UV detector for sensitivity (0.002AUFS)spectroMonitor III variable wavelength UV detector for versatility (190-350 nm)fluoroMonitor III fluorescence detector with 10 mole sensitivityrefractoMonitor III refractive index detector for universal applications4 Reliable pumps--the product of 30 years experience in laboratory pump technology5 Easy access for routine maintenance of both columns and detectors6 Full alphanumeric keyboard for easy communication7 Cassette system for data and programme storage8 Two-pen thermal printer-plotter provides hard copy ofcomplete chromatogram with associated digital report9 Large shielded visual display in plain language insteadof mneumonic codes. Core resident BASIC for truecomputer capability.10 Simultaneous dual channel integration and fulldata processing

Yes! The versatility of LDC’s Analyst coupled with the power ofthe CCM (Chromatography Control Module) combine to give--maximum user control--maximum credibility of results--maximum versatility in chromatography--maximum use of chemist’s skill and timeAsk now for detailed specifications to streamline your HPLClaboratory with the CCM-based system--today’s most advancedgeneration of analytical control systems.

LABORATORY DATA CONTROL BRAINPOWER FOR CHROMATOGRAPHYLDC is a division of Milton Roy Company, Florida: one of the World’s leading manufacturers of laboratory instrumentation.

Laboratory Data Control,Shannon International Airport, lreland.Teh 061-61266 Telex: 6227.U.S.A.: P.O. Box 10235, Riviera Beach, Florida 33404.Te1:305/844-5241 Telex: 513479. U.K.: Milton Roy House,

High Street, Stone, Staffs. ST15 8AR.TeI: 0785 83 3542 Telex: 36623.West Germany: Milton Roy GmbH., 6467 Hasselroth/2,Jahnstrasse 22-24.Te1:6055 33 66 Telex: 4184357. 004

Product News

The CentrifiChem System 500 Centrifugal blood analyser from Union Carbide

Analytical monitors enables all the results to be collated andBreda Scientific has announced a new printed out automatically withoutseries of analytical monitors. The manual transcription. Automatic qualitymain application of this instrument control review programmes can beis to examine one constituent in a included, together with ’state of the art’liquid contained in a vessel, flowing in data analysis and calculation facilities.a pipe-line or an open channel. It is Union Carbide UK L td, 8 Graftonequipped with an on-line sampling Street, London W1A 2LR, UK.system, introducing selectively eithersample, standard or blank to the ana-lytical part which uses a flow through GC Engineering Serviceoptical detector. The integrated time Pye Unicam has formed a new Projects

controlled sequencing allows for auto- Group to provide advice and assistance

matic drift correction and self cali- for analytical and industrial laboratories

bration of the system. A range of that need improved gas chromatographyspecific industrial requirements can be facilities. They aim to combine well-

handled covering both high and low tried techniques with up-to-date tech-range concentrations, from 0-50 ppb up nology to solve special problems, using

to 98%. iurpose-built packages based on theirBreda Scientific, Cenco Instrumenten GCD series 204 and series 304 lange ofB F, Koni]nenberg 40-4825, BD Breda, laboratory gas chromatographs, solv-PO Box 3336-4800 DH Breda, The ing individual customers needs econ-

Netherlands. omically and efficiently.The options available include auto-

Centrifugal blood analyser matic sample injection, column switch-

The Medical Products Division of Union ing with facilities for back-flushing andheart-cutting, automatic sequencing andCarbide UK has recently introduced a data handling with microprocessors orcentrifugal blood analyser, the Centrifi- interfacing with mainframe computors,Chem System 500. The principle of the together with a comprehensive range ofsystem is the use of centrifugal force to columns and detectors.mix the patient’s sample with the cor- Pye Unicam Ltd, York St, Cambridgeresponding biochemical reagent to give CB1 2PX, UK.rapid diagnostic results. Over 1,000

blood samples can be assayed per dayon the system which can be operated by Gamma countera singletechnician. The ’Micromedic’ model 4/200 auto-

Small quantities of blood are required matic gamma counter is now availablefrom the patient in order for tests to be from ChemLab Instruments. This modelcarried out and the tests require 50% is a bench-top gamma counter with fourless than normal of the biochemicals, detectors counting four tubes simul-

Test results are by paper print-out or taneously. Processing is performed inshown on a screen by linking the system the rack. Counting efficiency is claimedto an intelligent computer VDU unit or to be better than 75%. Count timesdesk calculator. The system can also be range from 0.1 25.0 minutes. Theprogrammed to operate with a full data throughput rate is 200 tubes per hour,handling mini-computer package, which based on a 1-minute counting time. A

Model 4/600 which has a throughputrate of 600 tubes per hour is alsoavailable.

An integral microprocessor providesa digital display readout of counts foreach tube, and also has a data reductioncapability which can be programmed toreduce data automatically. Theprogramme, designed specifically forchemical laboratories will accommodatemost RIA methods and also allows usersto insert their own parameters.ChemLab Instruments L td, HornminsterHouse, 129 Upminster Road, Horn-church, RMll 3XJ, UK.

MonochromatorRofin has announced the introductionof a monochromator which produces ascanning output which enables opticalspectra to be displayed on an oscillo-scope. The basic unit generates arepeatedly swept spectral output and atrigger pulse for an oscilloscope. Thedetector option enables the user todisplay the optical spectra directly ona standard oscilloscope. Wavelengthinformation may be obtained usingeither the oscilloscope graticule scale, oran accessory which gives marker pulsesat 10 nm intervals. The wavelengthmarker accessory also provides a singlelarge marker pulse which can be movedon the screen in steps of nm by adigital thumbwheel switch.

The basic unit covers a spectralrange of 400-700 nm although the fullsystem is useable over the range 300-1100 nm. The wavelength accuracy isbetter than nm and the bandpass withthe narrowest slit is 2 nm.Rofin L td, Winslade House, Egham Hill,Egham, Surrey, UK.

Magnetic separation of antigenTechnicon has developed a method ofseparating the free antigen from theantigen-antibody complex by a magnet.

Specific antibodies are bound to aferric oxide particle by a cyanogenbromide technique. Following incuba-tion and the normal antibody-antigenreaction, the free and bound areseparated by standing the solutions on amagnet, before removing the super-natant. The benefits of magneticseparation of bound and free antigenare realised in their fully automatedRIA system, STAR. This system ismicroprocessor controlled, sampling at arate of 60 per hour and reducingoperator involvement. To perform theassay the operator simply loads thesampler and reagent and initiates theassay run by using the keyboard andvisual display unit.Technicon Instruments Co L td, EvansHouse, Hamilton Close, Basingstoke,Hants RG21 2YE, UK.

168 Journal of Automatic Chemistry

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