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Accreditation was first awarded to LTI for nondestructive testing in 1992. Laboratory Testing also has been PRI/Nadcap accredited in materials testing since 1993. The materials testing certificate covers chemical testing, mechanical testing, metallography, microhardness, corrosion, hardness and specimen machining services. Accreditation to ISO/IEC 17025 was added in 2000. Copies of all three PRI/Nadcap certificates are available at the Lab Testing website, www.labtesting.com/resources.php.