Amel Srl Ametek Inc. Process & Analytical Instruments Div. Astro International Corp. Bacharach Inc. Bisan Pars Co. Ltd. Bomem International Bruel & Kjaer Instruments CDS Analytical Inc. CEA Instruments Inc. Chromato-Sud Chrompack International B.V. Clean Air Engineering Columbia Scientific Industries Corp. Curtin Matheson Scientific Inc. Dani Strumentazione Analitica SpA Devco Engineering Inc. Dynatherm Analytical Instruments Inc. Entech Instruments Inc. ES Industries Fisons Instruments Inc. Foxboro Co. Graseby Andersen Graseby Ionics Analytical Div. HNU Systems Inc. Horiba Instruments Inc. Infrared Analysis Inc. Insitec International pbi SpA Interscan Corp. KVB/Analect (Formerly Laser Precision Analytical) LabLogix Inc. Leybold Inficon Inc. LINC Quantum Analytics MAST/KEYSTONE Inc. Mast Development Div. MKS Instruments Inc. MSA Instrument Division MTI Analytical Instruments Nicolet Instrument Corp. Perkin-Elmer Corp. Pernicka Corp. Photovac International Inc. Rosemount Analytical Inc. Seefelder Messtechnik GmbH & Co. Vertriebs KG Sensidyne Inc. Sentex Systems Inc. Servomex Co. Siemens AG SODEXIM S.A. Spectrex Corp. SRI Instruments Strohlein GmbH & Co. Tekmar Co. Teledyne Brown Engineering Analytical Instruments ThermoQuest Corp. Trace Analytical Inc. TSI Inc. Varian Analytical Instruments Viking Instruments Corp. Waters Corp. Zellweger Analytics Inc. MDA Scientific