Center for Tribology - CET Center For Tribology, Inc. is a tribology testing laboratory and a provider of tribology test instrumentation. http://www.cetr.com/

National Tribology Services, Offers testing of gearboxes, pumps, compressors, engines, turbines, hydraulics, greases, and used lubricants, oil analysis laboratory http://www.natrib.com/

Paragon Scientific Viscosity standards and refractive index standards. http://www.paragon-sci.com/

Falex Corporation Offers a complete line of tribology test equipment and services for friction, wear, lubrication, and abrasion studies. http://www.falex.com/

Plint and Partners Ltd Tribology testing division. http://www.plint-tribology.com/

Imperial Scientific Industries Imperial offers tribology and petroleum test equipment as per ASTM, IP, DIN and other international standards. http://www.tribotesters.com/

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. http://www.koehlerinstrument.com/

Falex Tribology NV A tribological testing laboratory and manufacturer of tribological test machines and specimens for sale http://www.falexint.com/

Ducom Manufacturer of standard and custom designed material testing equipment. Includes sample product list. http://www.ducom.com/

Hyperclean Technology Pte Ltd Sells clean room products, such as specialty gloves, garments, mats, and shoes. Also, offers electrostatic sensitive devices. Includes company information and list of items for sale. http://hyperclean.tripod.com/