| Advantage Maintenance Services: An independent Internet-based oil analysis laboratory and consultancy. Oil analysis reports available online. |
| Alberta Sulphur Research Ltd.: A nonprofit research organization specializing in the chemistry and technology of sulphur and its compounds relating to the sulfur and sour gas industries. Based in Calgary, Alberta, Canada. |
| Baseline DGSI: Geochemical analyses for exploration and production applications. Based in the Woodlands, Texas. |
| Chempro Inspections Pvt. Ltd.: Third party inspection services for chemical, petrochemical, petroleum, bulk drugs and pesticide storage equipment. Also undertakes inspection of API 5L SAW Pipes. Based in India. |
| Crude Quality Inc.: Planning and implementing crude oil testing programs. |
| CTC Analytical Services: Oil, coolant and fuel analysis for the North American transportation industry. |
| Harris Testing Laboratories: Analysis of crude oil, diesel, gasoline, jet fuel, kerosene, lube oil, naphtha and petrochemical solvents by ASTM and other standard methods. Based in Houston, Texas. |
| Herguth Testing Labs: Testing oil, fuel, grease, coolants and refrigerants as well as lubrication studies, tribology and condition monitoring. |
| Insight Services, Inc.: Independent oil testing laboratory providing ferrography, oil filter tests, tribology, and engine oil tests. Located in Cleveland, Ohio. |
| International Lubrication and Fuel Consultants, Inc.: Fuel analysis for petroleum vendors, users and environmental work. Cathodic protection services. |
| Intertek Caleb Brett: Global laboratory network testing petroleum, crude oil, refined petroleum products, and chemicals. |
| Isotopic Ltd: Mineral and fluid analyses for analysis of reservoir connectivity and stratigraphic correlation. Isotope services. |
| Oil Analysis Lab, Inc.: Analyzes engine trankcase oil and transmission oil to diagnose engine problems and most efficient oil change schedule. Based in Spokane, Washington. |
| Oil Analysis Services: Provides lubricating and transformer oil analysis including used oil analysis, DGA, hydraulic oil wear analysis, PCB testing, and oil gas analysis. |
| Panair Laboratory, Incorporated: Quality control testing for jet fuel, aviation gas, gasoline, diesel, lubes, and hydraulics to the Air Transport Association, ASTM and Joint Fueling Specification requirements. |
| PdMA Corporation Oil Analysis Laboratory: Laboratory tests on oil, grease, coolants, fuel and transformer oil. Most results available within 24-48 hours. Based in Tampa, Florida. |
| Peak Petroleum Testing Services, Inc.: Testing refined hydrocarbons for petroleum suppliers and users. |
| Petroleum Specialist Lab: Testing, analytical, and certification services of automotive fuels, diesel, jet fuel, crude and other petroleum products. |
| PetroTech Intel, LLC: PTI provides services to evaluate and characterize crude oil. Products include crude assays, newsletters highlighting crude quality changes and an extensive database on crude fields. |
| Polaris Laboratories, LLC: Testing and analysis for oils, fuels, coolants and water-based fluids with an emphasis on the transportation, industrial, oil and gas, off-highway and power generation industries. |
| Texas OilTech Laboratories, Inc.: Independent ISO 9002 certified petroleum, petrochemical, and environmental testing laboratory in Houston, Texas. |
| The Oil Lab: Professional oil analysis service for individuals and industry in Rugeley, England. |
| Wear Check Canada Inc.: Used oil analysis for gasoline and diesel engines. Web based software capable of managing sampling programs for large fleets of equipment. |
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