- The Air Toxic Compliance Consortium - Information on the status of air toxic regulations and compliance requirements, and natural gas compliance technologies and vendors, and links to related web sites.
- Cahill Instrumentation Ltd. - Repair/calibrate/re-certify a wide variety of lab and field measuring instruments.
- E and S Environmental Services - Diagnostic testing of tanks, lines and vapour recovery systems, fuel polishing and conditioning, road tanker vehicle inspection and testing, and pipeline leak detection.
- FracTech Ltd. - Providing independent well completion and stimulation laboratory testing, design and consultancy services, to operators and service companies world-wide. Based in Ashford, Middlesex, UK.
- Kidao Laboratories - Testing rubber, plastics, paints and grease. Mechanical testing and failure analysis of welds. Non-destructive testing. Corrosion testing.
- LCS - Marine surveyors. Provide inspection of vessels, maritime equipment and cargo on the Gulf Coast. Includes testing of oil cargos.
- Q and Q Control Services UK Ltd - Inspection and testing of petroleum, oil, hydrocarbons, petrochemicals, marine and dry bulk cargoes worldwide. Based in Suffolk.
- Well Testing Wireline Service Company, Inc. - Provides high pressure and low pressure testing. Based in Monahans, Texas.
