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Serving the Pacific Northwest

One Test at a Time


Diamond E Testing is a material testing and quality assurance company based in Portland, Oregon, that specializes in Asphalt, Soil, and Concrete. Diamond E Testing's commitment to honesty, integrity, hard-work, and reliability continues to separate them from the competition. While others stop at good enough Diamond E Testing doesn't consider a job done until the client is completely satisfied. Let Diamond E Testing show you the difference between simply finishing a job and going the extra mile.



Diamond E Testing offers over 50 tests and inspections to meet all of your material testings needs. On the "Services" page, all tests and inspections are broken down into concrete, masonry, asphalt, physical, soils, and aggregate tests. In the near future, Diamond E Testing will also be offering special inspection services to help us better serve our clients. Please contact us for pricing information or to request a bid.


All Diamond E Testing personnel are certified by the Oregon Department of Transportation (ODOT) and a part of the Western Alliance for Quality Transportation Construction (WAQTC). Many of our technicians are also certified by the American Concrete Institute (ACI) and the International Code Council (ICC). Visit our "Accreditations" page to learn more about our technician's certifications.


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Tel: 503-719-5848

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