| Center for Tribology - CET: Center For Tribology, Inc. is a tribology testing laboratory and a provider of tribology test instrumentation. |
| Ducom: Manufacturer of standard and custom designed material testing equipment. Includes sample product list. |
| Falex Corporation: Offers a complete line of tribology test equipment and services for friction, wear, lubrication, and abrasion studies. |
| Falex Tribology NV: A tribological testing laboratory and manufacturer of tribological test machines and specimens for sale |
| Imperial Scientific Industries: Imperial offers tribology and petroleum test equipment as per ASTM, IP, DIN and other international standards. |
| Koehler Instrument Co., Inc.: Designs and manufactures tribology instruments for friction and wear testing conforming to ASTM, IP and related test methods as well as custom designed products. |
| National Tribology Services,: Offers testing of gearboxes, pumps, compressors, engines, turbines, hydraulics, greases, and used lubricants, oil analysis laboratory |
| Paragon Scientific: Viscosity standards and refractive index standards. |
| Plint and Partners Ltd: Tribology testing division. |
Classical
