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| AnalytiChem Corporation | |
| Rudolph Research Analytical | ||
| Control Equipment, Inc. | ||
| Extech Instruments | ||
| TOPCON America Corporation (TAC) 37 West Century Road - Paramus, NJ 07652 USA - - | ||
| Bellingham + Stanley, Inc. | ||
| Intek Technical Instruments, Inc. | ||
| Mettler Toledo, Inc. | ||
| ImarQ Technologies | ||
| APT Instruments | ||
| GENEQ, Inc. | ||
| Kruss Optronic Germany | ||
| K Patents | ||
| Maselli Measurements, Inc. | ||
| Thermo Electron Corporation | ||
| Electron Machine Corp | ||
| Atago Co., Ltd. | ||
| Grau Hall Scientific | ||
| Leica Microsystems, Inc. 2345 Waukegan Rd. - Bannockburn, IL 60015 USA - - | ||
| Misco | ||
| Sumka Sons Instrumentation | ||
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