Alliance Instruments ALPKEM Bio-Rad Laboratories Inc. Biotech Instruments Ltd. Burkard Instrumente AG ChemLab Instruments Ltd. Data Translation Inc. Eppendorf-Netheler-Hinz GmbH Foss Tecator AB Foxboro Co. GAT Gamma Analysentechnik GmbH Ismatec S.A. ISMP Technologie JASCO International Co. Ltd. Labtronics Inc. Lachat Instruments Inc. Leeman Labs Inc. OI Analytical Omega Engineering Inc. Packard Instrument Co. Inc./Canberra Perkin-Elmer Corp. Perstorp Analytical Inc. Photovac International Inc. SAES Getters SpA Skalar Analytical B.V. Teledyne Brown Engineering Analytical Instruments WPA Ltd.