January, 1984 EQUIPMENT NEWS 31 Equipment News Software for X-ray Diffraction New search - match software for the PW 1700 X-ray diffraction system allows the user to create his own reference files. The software can record the number of times that each file has been accessed. Pye Unicam Ltd., York Street, Cambridge, CB12PX. Digital Cassette Recorder for X-ray Diffraction The PM 4202 can be used with the PW 1710 controller - processor to enable many different data baqks to be dumped on cassette tape or selected data banks to be read from tape. Pye Unicam Ltd., York Street, Cambridge, CB12PX. Colour-measurement Software Based on the PU 8800 ultraviolet -visible spectrophoto- meter, the new software for the HP85 computer is available on tape and disc. It provides measurement of colour or colour difference in up to three modes- diffuse or total reflectance and transmission.The system conforms to the requirements of the CIE. Pye Unicam Ltd., York Street, Cambridge, CB12PX. Spectrophotometer The Shimadzu UV120 single-beam instrument is avail- able in both ultraviolet - visible and visible only versions. It is supplied with a four cell sample compart- ment. Available accessories include recorders, thermo- statted systems and the SFU sipper-type flow cell system with a sample size of less than 500 PI and an automatic waste system once the reading has been taken. V. A. Howe & Co. Ltd., 12-14 St. Ann’s Crescent, London, SW18 2LS. Extended Systems for Spectrophotometry Three optional units are available for the Shimadzu UV240 ultraviolet - visible instrument.The OPI-1 and OPI-2 permit operations between measured data and memorised data, allowing subtraction, division and differentiation of spectra. They allow derivation of spectra to any order between first and fourth of stored or real time data. The OPI-3, used with an auto-flow cell and sipper system, gives a completely automated analysis system. V. A. Howe & Co. Ltd., 12-14 St. Ann’s Crescent, London, SW18 2LS. Infrared Spectrophotometer The Shimadzu 408 features a double beam optical system with optical null method, a built-in chart recorder with automatic pen lift, three-stage light source intensity adjustment and adjustable amplifier gain. A range of accessories is available. V. A. Howe & Co. Ltd., 12-14 St. Ann’s Crescent, London, SW18 2LS. Spectrofluorimeter The SFM 25 has a double beam optical system and pre-programmed method files.Four wavelength modes are available-fixed, excitation scan, emission scan and synchroscan. Kontron Instruments Ltd., P.O. Box 88, St. Albans, Hertfordshire, ALl 5JG.32 EQUIPMENT NEWS Anal. Proc., Vol. 21 Spectrophotometer for Environmental Monitoring The Scintrex AAZ-2, designed to analyse trace metals from 10-2Opl samples, is suitable for measuring the effects of acid rain in the field and in the laboratory. Techmation Ltd., 58 Edgware Way, Edgware, Middlesex, HA8 8JP. HPLC Resins A range of resins, consisting of finely sized spherical beads, can be used with water and most organic solvents. Their stability is such that a 4% cross-linked cation and neutral resin can operate at about 1 OOO lb in-2 pressure without bead deformation.The 8% cross-linked resins have been used at about 8 OOO lb in-2. Field Instruments Co. Ltd., 1-5 Baker Street, Wey- bridge, Surrey, KT13 8AE. Syringes Hamilton lo00 series chemically inert gas-tight syringes have a tested accuracy and reproducibility of k 1 YO and have been found to lose less than 3plh-1 at 7 atmospheres. V. A. Howe & Co. Ltd., 12-14 S t . Ann's Crescent, London, SW18 2LS. The Shimadzu-CS 930 'has a data processor and fast recording functions. .it features dual wavelength s m - ning, zig - zag scanning, working curve linearisation and background cornxtion. V. A. Howe & Co. Ltd., 12-14 S t . Ann's Crescent, London, SW18 2LS. Thin-lraw C M o g r a p k y Scan- Conductivity M&ers A range of meters is availahk.The Radiometer CDM83 autoranging instrument measures conductivity from 1.3pScm-1 to i300rnScm-1. The PHM $3 is an autocalibrating pH meter. The CDM 80 is a battery or mains power4 meter measuring from 0.01 yS cm-1 to 200mSc~1-~. There is a PHM 80 pH meter. The 2Q51 conductivity meter has a triple range from 0 to 19.99mS accurate to within 1.5%. V. A. Howe & Co. Ltd,, 12-14 St. Ann's Crescent, London, SW18 2LS. Digital Titration System The Radiometer DTS 833 can be used for all 'types of titration, including selective ion. It can titrate to one, two or more end-points, detect and .printout data for very weak end-points, deliver titrant automatically and titrate whea the end-point potential varies. It can also slow down titrant delivery as the end-point is approachd V.A. Howe & Co. Ltd., 12-14 St. Ann's Crescent, London, SW'18 2LS. pH and Temperature Meter The PHM 9 measures pH from 0 to 14 pH, with a resolution of 0.1, and has a direct temperature measure- ment range from -40 to + 150 "C with 1 .O "C resolution. It features lockable buffer control, allowing caiibration at the start of a day's use. Jenway Ltd., Gransmore Green, Felsted, Dunmow, Essex, CM6 3LB. Infrared Thermograph The Insight 80 series instrument, based on the pyroelec- tric videcon detector, provides thermal pictures on a TV screen in standard PAL 625 line format in the 8-14 pm infrared .band. The system is battery operated. Micron Infrared Systems Ltd., Foster House, Max- well Road, Borehamwood, Hertfordshire, WD6 1JB.PertaMe Muttimeter Tke MPM 2000 system measures temperature, relative humidity, rev min-1 and windspeed. By plugging in different Modumeters it can measure pH, oxygen, pressure, conductivity, etc. Solomat SA, 8 Finnimore Estate, Ottery St. Mary, Devon . Thermal Analysis Instrumentation A range of thermal analysis equipment from Mettler consists of the new FP800 series and the TA3000, which includes a thermal analysis computer containing a data handling software package. A series of application briefs is available. MSE Scientific Instruments, Manor Royal, Crawley, Sussex, RHlO 2QQ.January, 1984 EQUIPMENT NEWS 33 Interface for Particle Size Analysis SediComp, a computer-to-SediGraph interface, is designed to allow any SediGraph 5000ET to be adapted to Apple 11+ and Apple IIe microcomputers.The package includes Apple PC boards, master programme discs, connecting cable and user manual. Micromeritics Instrument Corporation, 5680 Goshen Springs Road, Norcross, GA 30093, USA. Portable Toxic Gas Detectors The Autostep series of instruments use the principle of colorimetric paper-tape analysis. Available initially as a continuous phosgene monitor, Autostep will soon be available for other gases. SKC Ltd., Hamworthy Trading Estate, Dawkins Road, Poole, Dorset, BH15 4JW. Hydrogen Sulphide Monitor Equipment from the Delphian Corporation for the analysis and monitoring of hydrogen sulphide in aqueous solution employs an electrochemical, pH compensated sensing technique. Auriema Ltd., 442 Bath Road, Slough, Berkshire, SL16BB.Balance The Sauter RE 1614 electronic top-pan balance has a mass range of 0-162 g and a tare range of 0-162 g and is readable to 0.1 mg. It is equipped with the Sauter Trend Display for fast, controlled weighing-in. MSE Scientific Instruments, Manor Royal, Crawley, Sussex, R H l O 2QQ. Ultracentrifuge The L8M system features ultra-smooth induction drive, full microprocessor control and an optional RS 232C port for connection t o a minicomputer for control data storage and processing. Linkage to a mainframe com- puter is also possible. Beckman-RIIC Ltd., Progress Road, Sands Indus- trial Estate, High Wycombe, Buckinghamsbire. Centrifuge The Heraeus Christ Cryofuge 8000 features built-in microprocessor control to give 16 centrifugation pro- grammes.It can achieve 0-835Og with a 6 I capacity within 100s. V. A. Howe & Co. Ltd., 12-14 St. Ann’s Crescent, London, SW18 2LS. Microbial Monitoring System The Bactometer Model 123 system is computer assisted and can test up to 512 samples simultaneously. It can measure conductance, capacitance or impedance changes in samples under test. A graphics programme allows six electrical response curves to be displayed simultaneously. An optional digital plotter is available. Bactomatic Ltd., 1 Newtown Industrial Estate, Newtown Road, Henley-on-Thames, Oxfordshire, RG9 IHG. Multi-channel Analyser A unit based on an Apple microcomputer with pro- grammes written in compiled PASCAL has been devel- oped for applications such as particle size distribution analysis.Lablogic., 72 Eldon Street, Wellington Street Indus- trial Estate, Sheffield, S1 4GT. Automated Quality Control System Developed by Hamilton and Ciba - Geigy, the Amica system is capable of sample preparation, automatic samphg and mixing of liquids in variable ratios. Analysis can be performed by photometry, photometric titration or potentiometric titration. V. A. Howe & Co. Ltd., 12-14 St. Ann’s Crescent, London, SW18 2LS. Interface for LABNET The SP9500 contains the software and input - output ports for interfacing a LABNET inter-instrument com- munications network with a variety of external devices such as VDU terminals, Centronics-type printers and micro- and minicomputers. Spectra-Physics Ltd., 17 Brick Knoll Park, St. Albans, Hertfordshire, AL1 5UF.Chart Recorders A range af recorders includes single- and double-pen units. Chart drive is electronically controlled over 11 speeds between 0.lmmmin-1 and lOmrns-’ in both directions, StaH - stop, chart drive, pen lift and event marker can be controlled remotely. V. A. Howe & Co. Ltd., 12-14 St. Ann’s Crescent, London, SW18 2LS. Literature A brochure describes the DU-6 ultraviolet - visible computing scanning spectrophotometer. Details are given of the range of accessories and in-built computing options. Beckman-REIC Ltd., Progress Road, Sands Indus- trial Estate, High Wyeombe, Buckinghamshire. A catalogue lists certified reference materials used for the calibration of optical emission and X-ray fluores- cence spectrometers for the analysis of metals in industry. BNF Metals Technology Centre, Grove Labora- tories, Denchworth Road, Wantage, Oxfordshire, OX12 9BJ.A brochure describes the APD 3520 microprocessor- based control and measuring system for the maker’s X-ray diffractometers. Philips Electronic Instruments Inc., 85 McKee Drive, Mahwah, NJ 07430, USA.34 AMENDMENTS TO FERTILISERS REGULATIOSS Anal. Pt‘OC., VOZ. 21 A compendium of products for liquid chromatography reviews columns and media, giving guidance on their selection. Uniscience Ltd., 12-14 St. Ann’s Crescent, London, SW18 2LS. An application note describes the determination of sequestering agents by ion chromatography. It includes eight chromatograms, details of sample preparation and instrument conditions, and references. Dionex (UK) Ltd., 1st Floor, The Parade, Frimley, Camberley, Surrey, GU16 5HY. The “Guide to Ion Analysis” explains the different types of available electrodes and the methods for which they can be used. The bibliography contains around 1 OOO references. MSE Scientific Instruments, Manor Royal, Crawley, Sussex, RHlO 2 0 0 . A brochure lists over 20 different types of ion-selective electrode, including solid-state, PVC membrane and gas-sensing devices. NWlO 7LU. EDT Research, 14 Trading Estate Road, London, A catalogue reviews the full range of the maker’s analytical instrumentation, giving details of automation developments in ultraviolet - visible, infrared and atomic-absorption spectrophotometry, chromato- graphy and X-ray emission and electrochemical analy- sis. Pye Unicam Ltd., York Street, Cambridge, CB12PX. A booklet describes a wide range of chromatography fittings. Also available are two dictionaries describing products, instrumentation and techniques for spectro- scopy and chromatography. A catalogue gives full details of porous polymer supports and includes the basic theory of gas chromatography and a glossary of chromatographic terms. Field Instrument Co. Ltd., 1-5 Baker Street, Weybridge, Surrey, KT13 8AE.