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| articles:nist_traceability [2021/03/10 11:46] – [NIST Traceability Numbers - The Sasquatch of Metrology] rrandall | articles:nist_traceability [2021/11/10 06:49] – [What are SI Units?] rrandall |
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| **[[https://www.nist.gov/system/files/documents/2019/06/21/gmp-13-ensuring-traceability-20190621.pdf|NIST GMP 13, "Good Measurement Practice | **[[https://www.nist.gov/system/files/documents/2019/06/21/gmp-13-ensuring-traceability-20190621.pdf|NIST GMP 13, "Good Measurement Practice |
| for Ensuring Metrological Traceability”]], sec. 1.3.3, "Use of, or reference to, official test numbers of a national metrology institute":** \\ | for Ensuring Metrological Traceability”]], sec. 1.6.3, "Use of, or reference to, official test numbers of a national metrology institute.":** \\ |
| "//Having an authentic test number does not provide assurance or evidence that the measurement value provided by another organization is traceable. Not only must there be an unbroken chain of comparisons, but each measurement must be accompanied by a statement of uncertainty associated with the value. Test report numbers should not be used nor required as proof of the adequacy or traceability of a test or measurement. National and international standards dealing with test and measurement quality requirements, such as ISO 10012, ISO/IEC 17025 and the ISO 9000 series do not require the use or reporting of specific test numbers to establish traceability.//" | "//Having an authentic test number does not provide assurance or evidence that the measurement value provided by another organization is traceable. Not only must there be an unbroken chain of comparisons, but each measurement must be accompanied by a statement of uncertainty associated with the value. Test report numbers should not be used nor required as proof of the adequacy or traceability of a test or measurement. National and international documentary standards for test and measurement quality requirements, such as ISO 10012, ISO/IEC 17025 and the ISO 9000 series, provide guidance for assessing metrological traceability and do not require the use or reporting of specific test numbers to establish metrological traceability.//" |
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| This is further noted in the: | This is further noted in the: |
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| SI Units are also explained on the NIST web site at: https://www.nist.gov/pml/weights-and-measures/metric-si/si-units and in "[[https://www.nist.gov/pml/special-publication-330|NIST Special Publication 330 - The International System of Units (SI)]]". Both NIST sources will likely be updated soon to reflect the new definitions to the SI that went into effect on May 20, 2019. | SI Units are also explained on the NIST web site at: https://www.nist.gov/pml/weights-and-measures/metric-si/si-units and in "[[https://www.nist.gov/pml/special-publication-330|NIST Special Publication 330 - The International System of Units (SI)]]". |
| ===== What are "intrinsic" standards? ===== | ===== What are "intrinsic" standards? ===== |
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