AAB Advanced American Biotechnology Advanced Pressure Products Amherst Process Instruments Inc. ATM Corp. Beckman Coulter Corp. Biomed Instruments Inc. Brookhaven Instruments Corp. Cilas CSC Scientific Co. Inc. Curtin Matheson Scientific Inc. Duke Scientific Corp. DuPont Co. DuPont Chemicals DYNA LABS Inc. EDAX International Inc. Endecotts Ltd. F. Kurt Retsch GmbH & Co. KG Fisons Instruments Inc. Fritsch GmbH Galai Production Inc. Gilson S.A. Graseby Andersen Hach Co. Horiba Instruments Inc. Insitec JL Automation Leeds & Northrup A Unit of General Signal LND Inc. Malvern Instruments Ltd. Matek Applied Sciences Metorex Inc. Micromeritics Instrument Corp. Microscal Ltd. New Brunswick Scientific Co. Inc. NORAN Instruments Inc. Olympus Optical Inc. Pacific Scientific Co. HIAC/ROYCO Div. Particle Data Europe S.a.r.l. Particle Sizing Systems Polymer Laboratories Ltd. Polytec GmbH Porous Materials Inc. Precision Detectors Inc. Princeton Gamma-Tech Inc. Quantachrome Corp. Rotex Inc. Shimadzu Scientific Instruments Inc. Showa Denko K.K. SODEXIM S.A. Spectrex Corp. Strohlein GmbH & Co. Sympatec GmbH TSI Inc. Wyatt Technology Corp.