• AABC Commissioning Group
  • ANSI Accredited
  • Government Industry Data Exchange Program
  • ILAC Mutual Recognition Arrangement
  • ISO 17025
  •  National Environmental Balancing Bureau
  • Sheet Metal and Air Conditioning Contractors' National Association

Welcome to Huston-DePue Calibration Laboratories (HDCL), an A2LA accredited metrology company. Since 1960 we have met the calibration needs of a multitude of companies and industries world wide. Whether delivering equipment to our facility, shipping instruments to us for calibration, or scheduling on-site service, you can always count on HDCL to deliver timely, quality service.

(click for details) UPDATE: HDCL's Response to COVID-19

HDCL is an Essential Business and will remain OPEN. Given the nature of Huston-DePue Calibration Laboratories’ (HDCL) services, many of our customers are identified as one of the 16 critical infrastructure sectors as outlined by the United States Department of Homeland Security in

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March 24, 2020

HDCL's Response to COVID-19

As you know, the World Health Organization has declared a pandemic related to the coronavirus, and there are confirmed cases in Oklahoma. HDCL wants to keep you apprised of the steps we are taking to keep our staff and customers safe and to keep our operations running smoothly.

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March 17, 2020