Laboratory Supply and Laboratory Equipment Companies Laboratory Supply Companies Ace Glass Incorporated Bio-Rad Laboratories Calgon Carbon Corporation Chemglass Scientific Apparatus Fisher Scientific Hach Purolite Ion Exchange Resins Rohm & Haas Ion Exchange Resins Sargent-Welch Sigma-Aldrich Thomas Scientific VWR Scientific Products Laboratory Equipment Companies Beckman/Coulter Cole-Parmer Instrument Company Dionex Corporation Kent Scientific Incorporated Keithley Instruments, Incorporated Millennium Technologies Incorporated Micromeritics Instrument Corporation O.I. Corpporation Perkin Elmer Instruments Parr Instrument Shimadzu Scientific Instruments
