Airfiltronix Corp. Astec Environmental Systems Bassaire Ltd. BioSystems SA Claus Damm A/S Cole-Parmer Instrument Co. E.S.I. Flufrance EACI/Envirco An Environmental Air Control Co. Inc. Flow Sciences Inc. Germfree Laboratories Inc. HEMCO Corp. Holten LaminAir A/S Jun-Air USA Inc. Medical Air Technology Ltd. Misonix Inc. Safelab Systems Ltd. Snydergeneral Corp. Div. of American Air Filter Telstar S.A.
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