Amersham Pharmacia Biotech Beckman Coulter Corp. Benson Polymeric Inc. Bioanalytical Systems Inc. Biochrom Limited Bio-Rad Laboratories Inc. Biotech Instruments Ltd. Eastern Chemical Div. of United-Guardian Corp. GAT Gamma Analysentechnik GmbH Haake/Fisons Instruments Hach Co. Hewlett-Packard Co. Interaction Chromatography Inc. International Equipment Trading Ltd. JEOL Inc. Kontron Instruments SpA Mallinckrodt Baker B.V. Millipore Corp. New Brunswick Scientific Co. Inc. Perkin-Elmer Corp. Pickering Laboratories Inc. Pierce Chemical Co. Sigma Chemical Co. Spectrum Chemical Mfg. Corp. St. John Associates Inc. Varian Analytical Instruments Wako BioProducts Waters Corp.
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