| 3M/Empore |
Orochem Technologies |
| Agilent Technologies |
Parker Hannifin |
| Alltech |
Perkin Elmer |
| Axxiom Chromatography |
Pickering Laboratories |
| Benson Polymeric |
Polymer Standards Service |
| Bio-Chem Valve |
Porvair |
| Brownlee/PE |
Reflect Scientific |
| Cera |
Regis |
| Chromacol |
Restek |
| Chrontrol |
Rheodyne |
| D-Star |
Scientific Systems, Inc. (SSI) |
| Eldex Laboratories |
SGE |
| Glas-Col |
SofTA |
| Grace Davison |
Sonntek |
| Graphic Controls |
SRI Instruments |
| Hamilton |
Sun-SRI |
| Higgins Analytical |
Thermo Scientific - Chromatography Columns & Consumables |
Imtakt |
Thomson Instrument Company |
| J. G. Finneran |
Timberline Instruments |
| Jordi Associates |
Transgenomic |
| Justrite |
UOP |
| Kimble/Kontes |
Upchurch Scientific |
| Kipp & Zonen |
Vaplock |
| Lab Alliance |
VICI Valco |
| National Scientific |
Vydac (The Separations Group) |
| Ohio Valley Specialty Chemicals |
Wheaton |
| Omnifit |
Zirchrom |
