Astra Scientific International Inc. Burkard Instrumente AG Capintec Inc. Carl Zeiss Jena GmbH Carlo Erba/Fisons Instruments CDS Analytical Inc. Cyborg Data Translation Inc. EG&G Princeton Applied Research Environetics Inc. ESA Inc. Foss Tecator AB International Equipment Co. (IEC) Labsystems Oy Oriel Corp. Packard Instrument Co. Inc./Canberra Photovac International Inc. Prometic Biosciences Inc. Sclavo SpA Servomex Co. Skalar Analytical B.V. Spectron Corp. Teledyne Brown Engineering Analytical Instruments Thermedics Detection Inc. ThermoQuest Corp. Westco Scientific Instruments