Your Trusted Source for Accredited Calibration
ISO/IEC 17025 | ANSI/NCSL Z540 and R205
Huston-DePue Calibration Laboratories (HDCL) is an ISO/IEC 17025 accredited laboratory through A2LA, the American Association for Laboratory Accreditation. HDCL is also accredited to ANSI/NCSL Z540 and R205.
Precision Calibration Powered by Accredited Labs
HDCL is proud to be powered by Accredited Labs, giving us access to a broad range of technical resources, industry expertise, and expanded service capabilities. This partnership reinforces our mission to provide accurate, audit-ready calibration services that align with the highest industry standards.
Accreditation reflects more than compliance — it represents our commitment to technical competence, impartiality, and consistent results. We use accreditation not just as a credential, but as a promise to deliver calibration services you can rely on.
Our Certifications & Accreditations
Accreditation is synonymous with both quality and competence of an organization, through the use of international standards. A2LA is a third-party body that performs accreditations to various international standards, ensuring an unbiased and objective evaluation of HDCL’s functions.
A2LA is the only independent, 501(c)3, non-profit, internationally-recognized accreditation body in the United States that offers a full range of comprehensive laboratory and laboratory-related accreditation services and training.
Established in 1978 as a non-profit, public service membership society, A2LA is dedicated to the formal recognition of competent testing and calibration laboratories, inspection bodies, proficiency testing providers, and reference material producers.

HDCL's accreditation through A2LA is internationally-recognized and based on globally-accepted criteria resulting in A2LA’s signatory status with the following international recognition arrangements:
International Laboratory Accreditation Cooperation (ILAC)
Mutual Recognition Arrangement (MRA)
International Accreditation Forum (IAF)
Multilateral Recognition Arrangement (MLA)
Asia Pacific Laboratory Accreditation Cooperation (APLAC)
Mutual Recognition Arrangement (MLA)
Inter-American Accreditation Cooperation (IAAC)
Multilateral Recognition Arrangement (MLA)
Trusted Accredited Calibration Services Backed by Proven Standards
Don’t leave compliance and quality to chance. Work with a calibration provider whose skills are recognized nationwide.