Alfa Aesar Bellco Glass Inc. Cole-Parmer Instrument Co. Hewlett-Packard Co. Intermountain Scientific/BioExpress J.G. Finneran Associates Inc. Kimble Glass Inc. Manara Technical Glass MG Scientific Inc. Paul Boettger OHG Polysciences Inc. Reliance Glass Works Inc. Supelco Inc. Thomas Scientific Wheaton Inc.