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NISTIR 7082, Proficiency Test Policy and Plan for State Weights & Measures Laboratories (2018 Ed)



Georgia L. Harris


This publication provides the policies and plans for the PT Program of the NIST Office of Weights and Measures. This Office of Weights and Measures (OWM) Proficiency Testing (PT) policy and plan has been updated to ensure compliance with the latest applicable documentary standards and policies of the International Laboratory Accreditation Cooperation (ILAC). The PT program has been in place since the early 1980s as a core part of the support to State weights and measures laboratories through regional measurement assurance programs. Original activities were conducted as “round robins” in support of ongoing measurement assurance activities related to support for State laws with requirements for metrological traceability to national and international standards. Kelleen Larson, L. F. Eason, and Ken Fraley in collaboration with NIST OWM personnel at the 2012 PT Workshop, Boulder, Colorado, proposed significant updates to this publication, which form the foundation for the 2018 update. Reviews by the participants listed below significantly contributed to the development of this policy and plan. The initial 2004 edition was developed under contract with Jeff C. Gust.
NIST Interagency/Internal Report (NISTIR) - 7082
Report Number


Accreditation, calibration, interlaboratory comparison, proficiency testing, recognition.


Harris, G. (2018), NISTIR 7082, Proficiency Test Policy and Plan for State Weights & Measures Laboratories (2018 Ed), NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed May 21, 2024)


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Created February 22, 2018, Updated November 10, 2018