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Koehler Instrument Co., Inc. - http://www.koehlerinstrument.com/
Designs and manufactures tribology instruments for friction and wear testing conforming to ASTM, IP and related test methods as well as custom designed products. |
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Paragon Scientific - http://www.paragon-sci.com/
Viscosity standards and refractive index standards. |
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Imperial Scientific Industries - http://www.tribotesters.com/
Imperial offers tribology and petroleum test equipment as per ASTM, IP, DIN and other international standards. |
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National Tribology Services, - http://www.natrib.com/
Offers testing of gearboxes, pumps, compressors, engines, turbines, hydraulics, greases, and used lubricants, oil analysis laboratory |