ANSI - American National Standards Institute
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NACLA Grants Recognition to ACLASS

Washington, DC, Sep 26, 2005

The National Cooperation for Laboratory Accreditation (NACLA) has granted recognition to Assured Calibration and Laboratory Accreditation Select Services (ACLASS), a multi-discipline laboratory accreditation body (AB), headquartered in the Washington, DC metro area. ACLASS is the 8th AB that has been recognized by NACLA. Recognition is an indication that ACLASS has demonstrated to a NACLA evaluation team that it complies with NACLA procedures and the international standard for a competent AB (ISO/IEC Guide 58).

ACLASS was recognized for a broad range of accreditation services: Calibration – dimensional, mechanical, thermodynamic, electromagnetic DC/ low frequency, electromagnetic RF/microwave, time/frequency and optical radiation; Testing - mechanical/metallurgical, chemical, construction materials, biology/microbiological, thermal, environmental, non-destructive, optical, and dimensional inspection.

ACLASS operates in international and domestic markets with assessors located throughout North America. ACLASS accredits laboratories to the ISO/IEC 17025 standard for a variety of testing and calibration areas. In addition to its participation in NACLA, ACLASS is actively involved in the international accreditation community.

NACLA-recognized ABs sign a mutual recognition arrangement (MRA), whereby they commit: to use equivalent procedures in the accreditation of laboratories; to recognize the operation of other signatory ABs as having met the same technical requirements for competence; and to accept the test reports and calibration certificates issued by signatory-accredited calibration and testing laboratories.

The roster of NACLA-recognized accreditation bodies and the scopes of accreditation services for which they are recognized are posted on the NACLA web site ( Visit the site for other information about NACLA as well.

NACLA is a private-sector not-for-profit organization, incorporated in the District of Columbia, with offices in Orlando, FL and Arlington, VA. The NACLA mission is to coordinate and promote consistency in U.S. laboratory accreditation activities by evaluating all ABs that apply for recognition and inviting those found competent to sign the NACLA MRA.

Futher information about NACLA will be found at