What key information must the traceability statement include in a calibration report performed by NIST?

The traceability statement in a calibration report is crucial because it provides evidence that the measurements are linked to recognized standards, ensuring reliability and accuracy. Including the identification of the reference standard used is essential, as it documents the source from which the calibration is derived. This information substantiates the accuracy of the measurements made during the calibration process.

When the reference standard is identified, it allows others to verify the traceability of the measurements back through the chain of calibration to higher-level standards. This is an important aspect of maintaining measurement quality and consistency across various applications and purposes.

Additionally, while the technician's name, the date of calibration, and the calibration method employed are all relevant pieces of information for a calibration report, they do not establish the necessary link to national or international standards in the same way that identifying the reference standard does. The focus of the traceability statement is primarily about confirming the standards that back the measurements, highlighting the importance of option C in ensuring that the calibration results are credible and accepted in various fields.