AC Analytical Controls B.V. Air Products and Chemicals Inc. AJ Cope & Son Ltd. Alltech Associates Inc. Ametek Inc. Process & Analytical Instruments Div. Antek Instruments Inc. Arizona Instrument Corp. (AZI) Arnel Inc. Astro International Corp. Axiom Analytical Inc. Bacharach Inc. Balzers AG Becton Dickinson & Co. Bioengineering AG Bio-Rad Laboratories Inc. BioSystems SA Bomem International Bruel & Kjaer Instruments Burrell Scientific Inc. CDS Analytical Inc. CEA Instruments Inc. Chromato-Sud Chrompack International B.V. Clean Air Engineering Cole-Parmer Instrument Co. Columbia Scientific Industries Corp. Columbus Instruments International Cosa Instrument Corp. Coy Corporation Devco Engineering Inc. DYNA LABS Inc. Edinburgh Sensors Ltd. Edwards High Vacuum International EG&G Chandler Engineering Entech Instruments Inc. ES Industries Euroglas B.V. Fisons Instruments Inc. Foxboro Co. G.I.R.A. GOW-MAC Instrument Co. Harrick Scientific Corp. Herrmann-Moritz Hewlett-Packard Co. Hiden Analytical Ltd. HNU Systems Inc. Horiba Instruments Inc. Infrared Analysis Inc. Infrared Fiber Systems Inc. Infraspec Ltd. Ingold Electrodes Inc. Interscan Corp. ISA Riber Janos Technology Inc. KVB/Analect (Formerly Laser Precision Analytical) L. Eschweiler & Co. Leda-Mass Ltd. Leeds & Northrup Leybold AG Leybold Inficon Inc. LI-COR Inc. LINC Quantum Analytics LND Inc. MAST/KEYSTONE Inc. Mast Development Div. MIDAC Corp. Mitsubishi Kasei Corp. Electronic Materials & Instruments Div. MKS Instruments Inc. MOCON/Modern Controls Inc. MSA Instrument Division MTI Analytical Instruments Nicolet Instrument Corp. Nova Biomedical Corp. Orthodyne Perkin-Elmer Corp. Phipps & Bird Photovac International Inc. Rosemount Analytical Inc. Dohrmann Div. SAES Getters SpA SAES Pure Gas Inc. Scott Specialty Gases Inc. SELMI TM Sensidyne Inc. Sentex Systems Inc. Servomex Co. Siemens AG SODEXIM S.A. Spectrex Corp. SRI Instruments Stanton Scientific Vacuum Science Strohlein GmbH & Co. Techtum Lab AB Tekmar Co. Teledyne Brown Engineering Analytical Instruments ThermoQuest Corp. Trace Analytical Inc. Tremetrics Inc. Unicam Analytical Systems Div. of Analytical Technology Inc. UTI Instruments Varian Analytical Instruments VG Gas Analysis Systems Ltd. Vici AG (Valco Europe) VICI Valco Instruments Co. Inc. Viking Instruments Corp. Wasson-ECE Instrumentation Inc. Zellweger Analytics Inc. MDA Scientific
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