National Standards Testing Lab

National Standards Testing Laboratory (NSTL), founded in 1966, is a private independent facility located in Derwood, MD, specializing in precision calibration of force measuring instruments and systems, including load cells and force gages. Accredited by the ANSI-ASQ National Accreditation Board (ANAB), NSTL adheres to ISO/IEC 17025:2017 standards for force calibration in accordance with ASTM E 74 and E 4 specifications.

With capabilities to calibrate devices ranging from 30 lbf to 1,000,000 lbf in both compression and tension, NSTL maintains a high level of accuracy, with an uncertainty of applied forces within 0.002 lbf up to 12,000 lbf and 0.01 lbf from 12,000 lbf to 1,000,000 lbf. The laboratory's services are traceable to the National Institute of Standards and Technology, ensuring reliable calibration for a variety of applications.

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