• The Primary Standards Laboratory

    A state-of-the-art, 45,000 sq. ft. building that features environments controlled to within 0.01°C.

    PSL Building
  • Calibrations

    Over a wide range of tolerances

  • Capabilities

    PSL capabilities cover a full spectrum of measurement disciplines and support precision measurements, Primary Standards, and Measurement and Test Equipment.

  • Certificates

    Comprehensive certification data to protect your assets

  • Awards

    Award-winning metrology

  • Shared Partnership Projects

    Some of our customers include. . .

    Shared Partnership Projects
  • Getting started with PSL

    Take advantage of our expertise

    Getting started with PSL

The PSL partners with government agencies, industry, and universities to provide high-quality calibrations and consulting services.

We solve measurement problems and provide calibration services that support the nation’s most challenging needs through our creative personnel; cutting-edge measurement science, facilities, and equipment; and unwavering commitment to quality and customer service.
The PSL maintains measurement and calibration expertise in a variety of areas. View our capabilities here. Each discipline develops and maintains primary standards, secondary standards, consults on measurement problems, and calibrates reference standards. The overall calibration program is accredited by the NIST National Voluntary Laboratory Accreditation Program.
This website identifies certain commercial equipment, instruments, or materials that the PSL supports. Such identification does not imply recommendation or endorsement by the PSL or Sandia National Laboratories, nor does it imply that the materials or equipment identified are the only or best available for the purpose.