Davis Inotek Instruments LLC.
- Calibration services provider with labs throughout the US, mobile facilities and onsite technicians.
- http://www.daviscalibration.com/

F-Squared Laboratories
- An independent laboratory providing services for companies requiring US and Canadian safety approvals.
- http://www.f2labs.com/

Riga Analytical Lab
- Offers structure characterization and material analysis using FIB.
- http://www.rigalab.com/

Materials Analytical Services, Inc.
- Analytical testing laboratory focusing on industrial hygiene, materials analysis, instrument service, and semiconductor analysis.
- http://www.mastest.com/

Chicago Spectro Service Laboratory
- Independent metallurgical laboratory specializing in the chemical, physical and metallurgical testing of ferrous and nonferrous materials.
- http://www.chicagospectro.com/

Municipal Testing Laboratory
- Provides construction inspection and testing services.
- http://www.municipaltestinglab.com

Quad City Laboratory, Inc.
- Provides state of the art testing, inspection, and calibration services.
- http://www.testlab1.com

VMS International
- Australian calibration laboratories that are NATA accredited and ISO certified ensuring traceability.
- http://www.vms.net.au

TouchStone Systems and Services, Inc.
- Midwest-based independent testing laboratory for automotive, aerospace and commercial industries.
- http://www.touchstone-testing.com

Main ChB, Inc.
- A2LA (17025)accredited laboratory providing customized metrology and calibration services.
- http://www.chbtech.com

Beta Laboratory
- Offering calibration, analytical testing and safety training programs.
- http://www.beta-lab.com/

Flow Dynamics
- Calibration laboratories for liquid, inert and flammable gas flowmeter calibrations.
- http://www.flow-dynamics.com

Precision Repair, Calibration, Sales and Service
- ISO/IEC 17025 accredited laboratory servicing the manufacturing industry with calibration, gage repair, inspection services, and equipment sales.
- http://www.prcilab.com

IMR Test Labs
- A2LA and NADCAP accredited testing lab specializing in failure analysis, chemical, mechanical, polymer, and metallurgical testing, as well as thermal spray, environmental and cyclic corrosion.
- http://www.imrtest.com

Global Certification Laboratories
- Performs electromagnetic compatibility (EMC) and electrical safety testing of new products.
- http://globaltestlabs.com

Radiometrics Midwest Corporation
- An EMC/EMI electromagnetic compatibility engineering and testing center for domestic and international regulatory compliance.
- http://www.radiomet.com/

Farrington, Lockwood Co. Ltd.
- Custom laboratory offering safety and abuse testing of batteries for compliance with international airworthiness and transportation regulations.
- http://www.flcl.ca

Pro-Pack Testing Laboratory, Inc.
- Package testing laboratory located in Belleville, Illinois.
- http://www.propacktestlab.com/

Rotech Laboratories
- Materials testing analysis and consultancy, offering failure investigation, scanning electron microscopy and EDS, and fastener testing.
- http://www.rotechlabs.co.uk/

Garwood Labs
- Testing services include vibration, shock, temperature and humidity, nebs, climatics, product safety, emi/emc, hydraulics and pneumatics.
- http://www.garwoodtestlabs.com

Calibration Laboratory
- Resistor calibration with near NIST uncertainties, pressure, electrical, dimensional, optical, infrared, temperature calibration.
- http://www.callab.net

Chicago Testing Laboratory, Inc.
- Asphalt testing laboratory, providing design, testing, failure analysis, training, and litigation support.
- http://www.chicagotestinglab.com/

ACT Laboratories, Inc.
- Test panel manufacturer and independent automotive testing laboratory.
- http://www.actlaboratories.com/

Analytical Services Ltd. UK
- Testing laboratory, chemical and physical testing of textiles, chemical analysis of concrete, mortar and other materials.
- http://www.analytical-s.co.uk/

Bodycote Materials Testing
- The laboratory operates across a wide range of industry sectors including manufacturing, engineering, pharmaceutical, environmental and consumer products.
- http://mt.bodycote.com/

Absolute Calibration
- Independent laboratory providing calibration and repair of electrical, temperature, humidity, pressure and dimension measuring instruments.
- http://www.absolute-cal.co.uk/