Journal of Automatic Chemistry Vol. 11, No. 2 (March-April 1989), pp. 91-97

New products

Chemical information retrieval:an intelligent text retrieval pack-age

Harwell Computer Power haslaunched a text information retrievalsystem for the chemical industrywhich incorporates two major break-throughs in technology.

STATUS/IQ is based aroundSTATUS, originally developed bythe Harwell Laboratory, but canunderstand questions addressed to itin plain, standard English and canassess the relative importance ofeachpiece of retrieved text.

Traditional free text systems allowusers to ask questions via a commandor menu-driven interface that simplysearches on any word. However,STATUS/IQ’s natural languageability allows the user to ask ques-tions such as:

’What are the safety standards thatcontrol the manufacture of isocya-nates for paint?’

STATUS/IQ will immediatelyrecognise the concepts in the sen-tence such as ’safety standards,’’manufacture,’ ’isocyanates’ and’paint.’ STATUS will then searchthrough the database to find everyrelevant article.

The second technological break-through- the ranking ofdata in orderof relevance- is in some ways a morefundamental advance in informationtechnology.

Whereas traditional systems willoften retrieve several hundreds ofarticles that include specified key-words, STATUS/IQ finds all of theinformation and indicates whichpieces are most relevant to yourquestion.

Both STATUS and STATUS/IQautomatically index every word ineach document entered into the data-base, and allow the location ofwords,phrases or concepts. STATUS/IQ,

which uses natural language ratherthan keying search words into menuoptions, virtually eliminates the needfor training and can be used by staffwith little or not computer skills.

Forfurther information, contact: HarwellComputer Power, Curie Avenue, Harwell,Oxfordshire OXll OQW, UK.

Personal computer controls dis-solution testing

The automatic set-up and control oftablet dissolution testing with the HP8450A diode array UV/vis spectro-photometer can now be simplified byusing HP’s PC-compatible Vectracomputer as the system controller.

This new dissolution testing packagefor pharmaceutical laboratories,comprising HP Vectra, HP 8450Aspectrophotometer, accessories andsoftware, provides both single andmulti-component analysis using

proven mathematical algorithms.Methods may be stored for futureuse.

Up to three six-vessel dissolutionbaths may be used simultaneously,and a control sample for each can bemeasured automatically to validatesystem performance before the test.During testing, measurements aremade at constant intervals or atuser-specified times. Automaticpump control is available for longterm tests.

Up to five quality control specifica-tions can be defined, and results fromany vessels that do not meet these arelisted separately.

Data from up to four baths may becombined in one report, which isproduced in the format required bythe user. Data are stored as ASCIIfiles, and can thus be imported intoother programs. Complete statisticalanalyses are included in the report.

Dissolution-testing systemfrom Hewlett-Packard, consisting ofan HP8450A diode-arrayUV/visible spectrophotometer, the HP89024B dissolution testing kit and the systemcontroller, an HP Vectra PC.

0142-0453/89 $3.00 ( 1989 Taylor & Francis Ltd.91

New products

For further information, contact: Ana-lytical Products Group, Hewlett-PackardLimited, Miller House, The Rin., Brack-nell, Berks. RG12 1XN, UK. Tel.: 0344424898.

Quantitation and enzyme kineticssoftware for diode array spec-trometry

New software just released by Hew-lett-Packard for the UV/vis Chem-Station further extends the capabili-ties of the HP 8452A diode arrayUV/vis spectrophotometer.

Quantitative analysis is greatly facili-tated by the HP 89511A quantitationsoftware package, designed to aid thedevelopment ofquantitative methodsand multicomponent analysis. Thenew software takes full advantage ofthe advanced diode array technologyof the HP 8452A.

For single component analysis, thesoftware allows the selection ofwavelengths which provide the bestcalibration curve and the greatestreproducibility, and the determina-tion of sample impurities. In multi-component analysis, the softwareallows concentrations of up to 12components to be determined withina known sample matrix, allows theuse of absorption and derivativespectra and saves time in methoddevelopment by mathematicallysynthesizing spectra prior to measur-ing actual samples so that the feasi-bility of multicomponent analysismay be determined quickly.

A new enzyme kinetics package, HP89512A, provides biochemists withthe means to investigate enzymereactions, rate data and reactionmodels with unmatched speed andaccuracy. The combination of diodearray scanning of the wholewavelength range with the fast dataevaluation of this new softwareallows spectral information to bestored and evaluated post-run. Inthis way the design of subsequentexperiments may be optimised afterthe initial run, eliminating repetitivetrial and error.

Reaction rate data may be deter-mined quickly and easily with vari-ous types of curve fit. Nine mathe-matical models for enzyme reactions

provide flexibility; alternatively userscan develop models from their ownequations. The kinetics of severalreactions may be measured in paral-lel with the help of a new multi-celltransport mechanism for the HP8452A.

New full-colour, illustrated bro-chures are available for both pack-ages. The brochures describe thesoftware in detail, and contain appli-cation examples.

The brochures are available free ofcharge from Hewlett-Packard.

Forfurther information, contact: Hewlett-Packard Limited, Miller House, The Ring,Bracknell, Berks. RG12 1XN, UK, Tel.:0344 424898.

Automated data collection usingsingle computer

The Moncal 10 system software withan IBM personal computer collectstest results from MonsantoRheometer, Mooney and Ten-someter 10 instruments.

The system collects the results fromas many as 10 instruments for recalldisplay or printing. Results printautomatically on detection ofa limitsviolation. Other test data may beinput manually. The user may alsoreformat his files for use with othercommercial software.

The Moncal 10 system comparesspecification limits with test data foreach instrument. On detection of alimit violation, the Moncal 10 systemautomatically displays a visual alarmand illuminates the failed light at thetest instrument. Any limit violation isstored with the data so that reportsmay be made with limits applicableat the time of test. The system iscapable of storing 1000 sets of com-pound limits.

For each test the running statistics(average and standard deviation) areautomatically updated. They can bereset to start a new series. This givesan indication of the position (aver-age) and the variation (standarddeviation) over a fixed period oftime.Off-line reports recalculate the aver-age and standard deviation over adefined time and/or batch range.

Further statistical analysis includesprocess capability (Cp, CpK) andhistogram display for results com-parison with the normal curve andcontrol limits.

The batch report function gives acompilation of all tests carried out forany specific batch. This includes passor fail messages.

As many as five material propertiescan be entered via the keyboard (i.e.hardness, SG).

Manual input data is processed in anidentical way to automatically collec-ted data.

Moncal 10 requires an IBM personalcomputer with 20 MByte hard disk, afloppy disk and HPIB board. Screenentry facilities, prompt messages andfunction keys simplify system opera-tion.

The Moncal 10 system accepts datadirectly from the test instruments orvia the keyboard. Data from Mon-santo Rheometer, Mooney and Ten-somer 10 is directly transmittedthrough unique interfaces havingIEEE488 capability available fromMonsanto.

For further information, contact: Mon-santo plc, Edison Road, Dorcan, Swindon,Wiltshire SN3 5HN, UK. Tel.: (0793)31315.

Kodak Ekta chem analyzers: newbrochure

A 6-page free brochure, The Configur-able Analyzersfrom Kodak, describes themodular Kodak Ektachem 700analyzers and the desktop EktachemDT system. The modular design ofthese systems means that new testingand sample management capabilitiescan be added at any time, maintain-ing flexibility and avoiding obsoles-cence.

Forfurther information, contact: EastmanKodak Co., Dept. 412 L, 343 State Street,Rochester, NY14650, USA. Tel.." 800 4456325.

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New products

Oxygen analyser for laboratoryuse

The C5A oxygen analyser fromKane-May is a simple to use, rugged,portable meter which, at 225"00,offers an economic and convenientmethod of measuring oxygen. TheC5A features a LED display, re-usable filter trap and a retractablestainless-steel probe, and comes com-plete with carrying case and instruc-tions. For flue gas measuring applica-tions, fuel efficiency charts are sup-plied as standard.

For further information, contact: Kane-May Ltd., Swallowjqeld, Welwyn GardenCity, Hertfordshire AL7 1JP, UK. Tel.:0707 331202.

CSA oxygen analyserfrom Kane-May Ltd.

On-line thermal conductivityanalyser

Teledyne’s Model 235 Thermal Con-ductivity (T/C) Analyser providesaccurate on-line monitoring of gasesin a variety of applications.

Typical applications for the Model234 include: hydrogen analysis inpetroleum refinery hydrocarbonstreams, ammonia synthesis, turbinegenerators and blanketing gases; gaspurity monitoring of argon, oxygen,

hydrogen, nitrogen, helium andother gases in air liquefaction; moni-toring gas proportions for processcontrol of mixtures such as propor-tions for process control of mixturessuch as N2/argon, H2/N, helium/airand O/N2; and other applicationswhere the thermal conductivity ofone gas is significantly different fromthat of another gas (or gases) in themixture being monitored.

The Model 235 operates by compar-ing the amount of heat absorbed bythe sample gas with that absorbed bya known reference gas. The differenceis electronically analysed with a sim-

ple Wheatstone bridge. The result is

provided as a signal output.

The Model 235 features electronictemperature control of the T/C cellfor optimum accuracy and stability.This 2-filament nickel-plated brassT/C cell requires only a simpleperiodic calibration to provide manyyears of service. The cell is the heartof the Model 235 and has proven its

reliability, durability and accuracy in

over 20 years of field use.

Also available with the Model 235are alarms, meter readouts, integralgas control panels, MADC outputsand panel-mounted or explosion-proof enclosures. Standard configu-rations are also available that utilizea separate control unit for mountingin control rooms or other remotelocations.

Forfurther information, contact: TeledyneAnalytical Instruments, The HarlequinCentre, Southall Lane, Southall, Mid-dlesex UB25NH, UK. Tel.: O15719596.

TA4000 Thermal analysis system

The Mettler thermal analysis systemis based on the modular concept. Itcomprises measuring cells for DSC,TMA and TG. The experimentaldata can be evaluated either in theTA TCll processor or on anattached personal computer with theTA72 software. A Mettler analyticalor microbalance can be attached viathe built-in CL interface; weightvalues can thus be.transferred auto-

matically.

The hub of the TA4000 system is thenewly designed TA TC 11 processor.

It contains the complete software inthe basic version, method memoryfor 10 standard methods, and evalua-tion programs stored as standard.Automatic calibration routines andautomatic, intelligible scaling of theplots are also built into the TC11.

All components of the system(measuring cells, balance, plotterpersonal computer) can be attachedto the standard interfaces. If differentmethods are in use, the measuringcell selector switch allows facile selec-tion of the desired measuring cell.

For a temperature range spanning-170 C to 750 C various DSCmeasuring cells all based on the samemeasurement principle are available.The DSC measuring cells differ,however, in their effective tempera-ture range, construction and shapethereby ensuring optimum manage-ment of a wide range of analyticalproblems.

The new DSC25 measuring cellmeasures the heat flow in the effec-tive temperature range -20 C to750 C. A sophisticated mechanismfor the opening and closing of thefurnace chamber makes insertioneven simpler. With the DSC25measuring cell, decompositions of,for instance, high temperature resis-tant plastics can be investigatedeffortlessly and accurately.

For further information, contact: MettlerInstrumente A G, CH-8606 Greifensee,Switzerland. Tel.: O1 944 2872.

New colour brochure on gasanalysis systems

Spectramass Ltd. have announcedthe publication of a new brochuredescribing their state of the artCOMPASS systems for precision gasanalysis. This 4-page colour glossy isa valuable information source aidingthe selection of gas analysis systemsfor a wide range of applications,including environmental pollutionmonitoring, chemical process con-

trol, pharmaceutical quality assur-ance and residual gas analysis in highvacuums.

Forfurther information, contact: Spectra-mass Ltd., Radnor Park, Congleton, Che-shire CW12 4XR, UK. Tel.: 0260279531.

93

New products

A family of electrolyte analysers

The Ciba Corning 600 Series ofclinical electrolyte analysers com-bines advanced sensor technologywith minimum maintenance require-ments. Units in the range include the614, 634, 644 and the 664/Fast Fouranalyser. All can carry out measure-ments from serum, plasma, wholeblood or urine.

All models in the 600 series utilise aneasy to use interactive display whichguides the user through every opera-tion. A series of questions, promptsand statements are displayed in anyof the five different languages avail-able. Simple instructions guide theoperator through the programmedmaintenance procedures.

The 614 Na/K and 634 Ca/pH ana-lysers are ideal for paediatric andfoetal applications, and can acceptsamples as small as 35 tl. Otheroptions availabled with the 634include the ability to report ionisedcalcium at any pH of the sample,.corrected to the pH of 7.4, or thepatient’s in vivo pH.

The 644 Na+, K+, C1 and 664/FastFour Na+, K+, Cl-, tco2 analysersare more suitable for laboratorieswhich have a larger throughput ofsamples. The 664 is capable of a

production rate of 400 results perhour.

Sample batches can be interruptedby a STAT sample; results are avail-able in 75 s. The 664 will automati-cally return back to the sample re-quiring analysis when the STATsample was introduced.

This family of electrolyte analyserscaters for all needs: the 614 and 634are suitable for laboratories with a

high number of priority samples buta lower sample throughput whereasthe 644 and 664 Fast Four are idealfor larger sample throughput labora-tories which still need to run a fewpriority samples.

For further information, contact: CibaCorning Diagnostics Ltd., Halstead,Essex C09 2DX, UK. Tel.: 0787472461.

Complete blood gas analysissystems

A complete support package of qual-ity control materials, sampling de-vices and data management systemsnow complements the Ciba Corning200 series of blood gas analysers.Extending this ’system concept’ areremote control and monitoring facili-ties and the option of linkage toco-oximetry for oxygen dissociationcurve analysis.

The 278 directly measures pH,pCO2, and pO, calculates bicarbo-nate (actual or standard) base excess

(in vivo or in vitro), tCO, oxygensaturation, oxygen content andcapacity (with haemoglobin input),and also the AaDO and a/A ratio(with FIO input). The model 280measures the clinically significanttotal haemoglobin value. At the topof the new range, the model 288includes sodium, potassium and achoice of ionised calcium or chloridewith all the above parameters. Theanion gap is also calculated.

The 200 series electrodes have beendesigned to eliminate the time con-suming membrane change proce-dures required by other electrodes.They have an extended life, enablingthe operator to run samples uninter-rupted by the need to change mem-branes. All electrodes now serve adual purpose; as sensors to detectanalytes present in the sample, andas the actual sample pathway. Theresponse time for the electrode end-point on all electrodes is approxi-mately 45-60 s.

Both the model 288 and 280 measuretotal haemoglobin using a flow injec-tion analysis method to give correla-tion with haematology equipment.Thirteen microlitres of whole bloodare diluted inside the 288/280 bymixing it with haemoglobin reagentin a special mixing block. This zigzagmixing chamber provides a fast reac-tion time (15 s) without clotting asthe reagent/blood ratio is very high.The total system is very fast (typic-ally 45 s), is self-cleaning and, due tothe composition of the haemoglobinreagents, will measure turbid sam-ples with total accuracy.

This facility of total haemoglobinmeasurement means that in

emergency situations, samples do nothave to be despatched to a haematol-ogy laboratory. Anaesthetists cantherefore get a quick and accuratepicture of the true oxygen carryingcapacity of the blood.

Software design is such that the mostfrequently accessed functions areavailable with a minimum of keyoperation, and a quick and easyreturn to menu. This is characterisedby the ’Ready, Introduce Sample’message. Features which can be cus-tomised include QC and patientreference ranges, programmable cal-ibration intervals and printingoptions. Built-in memory storageallows recall ofresults and tracking ofQC performance.

For further information, contact: CibaCorning Diagnostics Ltd., Halstead,Essex C09 2DX, UK. Tel.: 0787472461.

Computing integrator for chro-matography

Spectra-Physics Autolab Divisionhas announced ChromJet, a fast,powerful computing integrator forchromatography.

In addition to processing, storing andreintegrating up to 128 chromato-grams using a patented integrationalgorithm, ChromJet has a full-sizedQWERTY computer keyboard and a

four-line, 40 character supertwistbacklighted liquid crystal display. Aspecially designed (patent pending)inkjet printer provides clear, easy toread chromatograms and reports,and accommodates convenientZ-fold paper from either the front orthe back of the instrument.

ChromJet provides low noise, highlinearity, high speed data integra-tion, up to 60 slices per second, andensures accuracy even with fast capil-lary GC or high speed LC signals.ChromJet includes features such asdrawn-in baselines, baseline subtrac-tion, batch re-processing, built-instatistics, and time functions. A dualchannel version is available, as wellas optional extended BASIC pro-gramming and extra memory (to 512Kbytes).

ChromJet is available from SpectraPhysics starting at 1800.

94

New products

Zymate laboratory robotics system controllerfrom Zymark.

Forfurther information, contact: Spectra-Physics Autolab Division, Boundary Way,Hemel Hempstead HP2 7SH, UK. Tel.:0442 232322.

Zymate laboratory roboticssystem controller

Zymark’s System V Controller is anadvanced architecture Zymate labor-atory robotics system controllerwhich can operate directly with MS-DOS based personal computers. TheSystem V controller is fully compat-ible with existing Zymate modulesand EasyLab application programsbut provides up to three times fasterEasyLab processing and has threetimes the dictionary capacity of con-ventional Zymate controllers. PCcompatibility allows ease of datamanagement and report writing aswell as archiving and transmission tocentral computers.

electrode stability and waiting time.Together with the automatic addi-tion of an auxiliary reagent, e.g. anion strength adjuster, this meansexcellent reproducibility. The bestpossible accuracy throughout theelectrodes’ wide measuring range isobtained by calibration with up tofive standard solutions.

The calibration data of each elec-trode are stored together with othermethod parameters in a memorycovering up to 60 methods. Themethod parameters include auto-matic selection ofelectrode input andburette position. To change from onemethod to another you just key in the

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

Ion concentration measurementintegrated with titration

By simply plugging in the VIA103Direct Ion Concentration Module,the powerful TitraLab High Perfor-mance Titration Laboratory can per-form ISE measurements under stan-dardized conditions with respect to

Ion concentration measurementfrom Radi-ometer Analytical.

method number, and your TitraLabsystem is ready to go- safe andconvenient.

In order to reduce operator costs,TitraLab and VIA103 Direct IonConcentration Module offer fullautomation with a SAC80 SampleChanger. The up to five-point cali-bration can be performed automati-cally including reagent addition. Onsamples in the 20 position SampleChanger, several different ISEmeasurements can be performed incombination with pH or conductivitymeasurements and/or all types oftitrations.

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

Automated DNA sequencing

An applications publication fromBeckman explains how the Biomek1000 automated laboratory worksta-tion can be used to automate DNAsequencing according to the dideoxymethod of Sanger and Coubon.

Full details are provided on themethodology, which has been devel-oped by Beckman, including pipet-ting patterns used for template isola-tion in a 96-well plate. There are alsodetails of the Biomek 1000 itself.

Biomek is particularly effective forautomating DNA sequencing duelargely to its ability to pipette 2 tlvolumes with a fine precision. Therecent introduction of a new eight-channel pipetting tool for Biomek hasadded considerable speed to thereagent addition steps in Biomek’soperation.

For further information, contact: Beck-man, Progress Road, Sands IndustrialEstate, High Wycombe, Bucks, UK. Tel.:0494 41181.

Automatic alcohol analyser

Skalar Analytical have introducedthe SANplus generation of segmentedflow analysers for the automaticdetermination of ethanol in alcoholicbeverages. The SANplus analyser candetermine up to 30 samples per hour,from low alcohol beverages to sam-

ples with 30-40% alcohol.

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New products

Samples are introduced automati-cally into the analyser in which theyare diluted, distilled (to overcomematrix problems), resampled andmixed with potassium bichromate.The Cr6+ is reduced in the presenceofethanol to Cr3+, the green complexof which is determined spectropho-tometrically at 600 nm.

The ethanol analyser consists of:SA1000 sample charger, SA2005peristaltic pump, SA module holder,SA01205007 chemistry module,SA6250 matrix photometer andSA8606 data system. The SA7011single channel chart recorder andSA1500 rinsing valve are optional.

Other analyses automated on thesegmented flow analyser for thebrewing industry are: bitterness, col-our, pH, free amino nitrogen, poly-phenols, diacetyl, sulphur dioxide,carbonate and thiobarbituric acidnumber. For the wine industrySkalar has automated: acetic acid,acidity (total), chloride, density,ethanol, glucose, glucose/fructose,glucose/fructose/saccharose, glyce-rol, hydroxymethylfurfural, iron, lac-tic acid, malic acid, nitrate, pH,phosphate, reducing sugars (total),sulphur dioxide (free), sulphur diox-ide (total), tartaric acid and volatileacids.

For alcohol-free and low alcoholbears, Skalar has automated theenzymatic method specified in ’EBCmethod 9.2’ and in ’methods ofenzymatic food analysis’ (BoehringerMannheim).

For further information, contact: SkalarAnalytical, P.O. Box 3237, 4800 DeBreda, The Netherlands. Tel.: 76 22 5477.

High sensitivity electron spinresonance

Jeol have released a new range ofESR spectrometers, the RE Series,designed for ultra-high sensitivitiesand long term stability. With veryhigh sensitivities of 1010 spin/0" mT,the ESRs have wide applications inbiological, pharmaceutical and med-ical research.

To achieve long-term stability andhigh power, Jeol have incorporated a

solid oscillation element, a Gunndiode, as the microwave powersource. Its durability, 20 000 hours ormore, can be six times that of thealternative Klystron oscillator.

The ESR’s standard cavity is cylin-drical and allows the sample to beirradiated directly. It has a high Qvalue of 18 000 and operates in theTE O11 mode. This enables a veryhigh signal/noise ratio of460:1 to beachieved which is especially effectivein examining low concentrations.

The RE Series offers a choice ofmagnets with pole diameters of 150,180 and 300 mm. The data systemcomputer simplifies setting up,recording and other procedures suchas modulation frequency changesand otherwise cumbersome measure-ments of second harmonics.

Many options are available includingcavities for high and low temperatureworking, for light irradiation, wafermeasurement and light detection.Extensions are available for ENDORexperiments, spin-echo, rapid scanand Q band operation.

The first of the new RE Series to bebrought into Europe is beinginstalled at Royal Holloway andBedford New College.

Forfurther information, contact:Jeol Ltd.,Jeol House, Grove Park, Colindale, Lon-don NW9 0JN, UK. Tel.: O1 205 6376.

Perkin-Elmer Modelluminescence spectrometer

LS-50

The PC-controlled Perkin-ElmerModel LS-50 is a versatile, highperformance, scanning luminescencespectrometer, capable of measuringfluorescence, phosphorescence, che-miluminescence and biolumines-cence data. The Model LS-50 has theability to selectively analyse manydifferent types of sample, and isdesigned for accuracy of measure-ment, convenience and ease of use.

There is a comprehensive range ofsample handling accessories, many ofwhich are computer-controlled toautomate sample handling for a widerange of applications.

Instrument control and comprehen-sive data handling facilities are pro-vided through the menu-driven,GEM-based software. The data for-mat allows further processing onother commercially available PCprograms when necessary.

The Model LS-50’s high energyoptical system gives excellent sensi-tivity for both routine and researchapplications, and the pulsed xenonsource provides the flexibility formeasuring the fluorescence andphosphorescence of samples.

For further information, contact: Perkin-Elmer Limited, Post OfJce Lane,Beacons,field, Bucks HP9 1QA, UK.Tel.: 049 46 6161.

CENELEC hazardous area appro-val received for process IR Ana-lyser

Servomex have just received LCIEapproval to CENELEC specifica-tions EN50014 and EN50016 fortheir purged PSA402 process infra-red analyser.

CENELEC EEx p approval allowsthe PSA402 to be used in Zone andZone 2 hazardous areas and withgroup II gases.

Gas, liquid and vapour measure-ments can all be performed by the402 allowing components rangingfrom CO and CO2 to SO2, solvents,water vapour and water in solvents tobe detected.

The single-beam dual wavelengthtechnique used in this analyser pro-vides users with a highly stable,accurate measurement which has ahigh tolerance to sample cell contam-ination.

The two unit design, where theoptical bench is normally mountednear to the sampling point and thecontrol unit is located in a moreconvenient position, allows separa-tion by as much as 500 metres.

Approvals received are EEx p II T5for the PSA402 (Cert No LCIE88.B6088X) and EEx p II for itsassociated pneumatic puge controller(Cert No LCIE 88.B0019U).

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New products

Forfurther information, contact: ServomexLtd., Crowborough, Sussex, TN6 3DU,UK. Tel." 0892 652181.

Analysis methods for environ-mental control

Radiometer have documented aseries of 25 analyses for chemistsconcerned with water and environ-mental analysis.

Typical examples are: fluoride inwater, nitrate in soil and vegetablesand chemical oxygen demand inwaste water. Also included are ’Aquick guide to ion-selective electrodemethods’ and ’A quick guide toconductivity measurement.’

The 25 free environmental analysisare available as ’The EnvironmentalPackage’ from Radiometer’s Ana-lytical Division.

For further information, contact: Radi-ometer Ltd., The Manor, Manor Royal,Crawley, West Sussex RHIO 2PY, UK.Tel." 0293 517599.

1989 ASTM Directory of TestingLaboratories

The 1989 Directory is 40% revisedsince the 1988 edition, and features1100 laboratories. Each entry gives acontact name, phone number,address, speciality, field of testingcovered, materials and products

analysed, equipment and staff avail-able.

The laboratories featured performservices for a fee. They are notcertified or endorsed by ASTM; theyare listed as a service to ASTMmembers and customers.

List price, $50.00; ASTM memberprice, $40.00. ISBN 0 8031 1212 2;Code number 04 333289 32.

Forfurther information, contact: ASTM,1916 Race Street, Philadelphia, PA19103, USA. Tel.: 215 299 5400. ASTMEuropean Ofjqce, 68a Wilbury Way, Hit-chin, Herts SG4 0TP, UK. Tel.: 046231525.

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