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articles:nist_traceability [2020/01/23 10:02] – [Traceability to Organizations, rather than SI Units] rrandallarticles:nist_traceability [2020/01/23 10:03] – [Traceability to Organizations, rather than SI Units] rrandall
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 ===== Traceability to Organizations, rather than SI Units ===== ===== Traceability to Organizations, rather than SI Units =====
  
-The US Federal Aviation Administration, [[https://www.faa.gov/documentLibrary/media/Order/6200.4G.pdf|FAA National Policy - Order 6200.4G]]" (dated 03/08/10) states:+The US Federal Aviation Administration, "[[https://www.faa.gov/documentLibrary/media/Order/6200.4G.pdf|FAA National Policy - Order 6200.4G]]" (dated 03/08/10) states:
  
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-Specifying that a calibration service provider __must__ supply "NIST Traceable" calibration certifications not only reveals a lack of understanding "metrological traceability", it ignores the reality that many calibrations, whether from NMIs (e.g., the [[https://www.nrc-cnrc.gc.ca/eng/solutions/advisory/calibration_index.html|NRC]] in Canada, [[http://www.cenam.mx/eng/|CENAM]] in Mexico, [[https://www.ptb.de/cms/en.html|PTB]] in Germany,) or accredited commercial metrology laboratories, may be traceable to SI units through other means (e.g., intrinsic measurement standards).+Specifying that a calibration service provider __must__ supply "NIST Traceable" calibration certifications, which this policy essentially requires, not only reveals a lack of understanding "metrological traceability", it ignores the reality that many calibrations, whether from NMIs (e.g., the [[https://www.nrc-cnrc.gc.ca/eng/solutions/advisory/calibration_index.html|NRC]] in Canada, [[http://www.cenam.mx/eng/|CENAM]] in Mexico, [[https://www.ptb.de/cms/en.html|PTB]] in Germany,) or accredited commercial metrology laboratories, may be traceable to SI units through other means (e.g., intrinsic measurement standards).
  
 This is politely pointed out by the [[https://ilac.org|ILAC – International Laboratory Accreditation Cooperation"]]. This is politely pointed out by the [[https://ilac.org|ILAC – International Laboratory Accreditation Cooperation"]].