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| ACCULAB | COORS | GLAS-COL | MARYLAND PLASTICS | TALBOYS |
| AIRGUIDE | CORNING | HAMILTON | MICRO-ESSENTIAL | TAYLOR |
| AJUSTO | CRAMER INDUSTRIES | HORIBA | NALGE | TECHNE |
| AKROMILLS | DENVER | HUMBOLDT | NASCO | TIME MEDICAL |
| ALCONOX | DYNALON | HYVAC | NUNC | TYLER |
| AMERICAN CAN | EAGLE MFG | J.T. BAKER | OHAUS | WARING |
| ANACHEMIA | EBERBACH | JENCONS | ORBECO HELLIGE | WHATMAN |
| ANSELL EDMONT | EC APPARATUS | JUSTRITE MFG | ORION | WHEATON |
| BARNANT | ELECTROTHERMAL | KESSLER | OXFORD | YSI |
| BARNSTEAD/THERMOLYNE | ELKAY | KIMBLE | PARR | MALLINCKRODT BAKER |
| BACHARACH/COLEMAN | EM SCIENCE | KIPP & ZONEN | PHOTOVOLT | NEYTECH |
| BECTON DICKINSON | ENGLEHARD | KOEHLER INSTR | PRECISION SCIENTIFIC | JAMESTOWN METAL PRODUCTS |
| BEL-ART | EVER-READY | L&R MFG | RICCA | CLASSIC MODULAR SYSTEMS |
| BLUE M | FALCON | LAB-LINE | SARTORIUS | MOHON INTERNATIONAL |
| BOEKEL | FENDALL | LABCONCO | SCI-MAT CO | |
| BRINKMANN | GARDNER | LABINDUSTRIES | SENSIDYNE | |
| BURRELL | GAST | LEICA | SENSOREX | |
| CENCO | GELMAN | LINDBERG | SO-LOW | |
| CHEMETRICS | GFS CHEMICALS | LINSIES | SPECTRUM | |
| CONSOLIDATED | GILMONT INSTR | MANOSTAT | SPER SCIENTIFIC |