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​​​​​​​Oregon's Metrology Laboratory​


The Oregon Department of Agriculture (ODA) Metrology Laboratory maintains Oregon's official standards for mass and volume.  These standards are metrologically traceable to the International System of Units (the SI) through the National Institute of Standards and Technology (NIST).

The metrology laboratory maintains: 

  • recognition by the NIST Office of Weights and Measures Laboratory Metrology Program, and 
  • ISO17025 laboratory accreditation through the National Voluntary Laboratory Accreditation Program (NVLAP LAB CODE 200468-0).

Calibrat​​ion Services include:

Precision mass calibration services are available for metric and avoirdupois weights:

  • metric 1 mg - 30 kg
  • avoirdupois 1000 μlb - 50 lb
  • avoirdupois 1/32 oz - 8 oz
  • avoirdupois 50 lb, 500 lb, and 1,000 lb

Calibration services for standard weight include

  • metric 1 mg - 500 kg
  • avoirdupois - 0.001 lb - 5,000 lb
  • avoirdupois 1/32 oz - 8 oz

  • Scale test trucks
  • Weight carts
  • Field test kits
  • Cast iron hand weights

Volume Calibration Services provided for:

  • 5 gallon test measures
  • 5 gal - 1,000 gal bottom drain meter provers
  • 25 gal & 100 gal LPG propane meter provers

The laboratory is able to calibrate mass standards to ASTM E617 Class tolerances, OIML R111 tolerances, and NIST HB 105-1 (1990) Class F tolerances.

Contact our laboratory staff to discuss your calibration requirements, cost estimates, and to schedule an appointment before submitting your equipment for calibration.

NOTE: See our NVLAP scope of accreditation (NVLAP LAB CODE 200468-0) for specific measurment points and associated uncertainties.  Not all measurement services are covered under our scope of accreditation.​


Aaron Aydelotte
Lead Metrologist
Metrology Services
635 Capitol Street NE
Salem, OR 97301
Phone: 503-510-6739
Ray Nekuda
Metrology Services
635 Capitol St NE
Salem, OR 97301
Phone: 503-510-2310
Main Office
Metrology Services
Phone: 503-986-4670