The sets of three
measurements can be used to assess repeatability, while the sets of six can be used to assess
reproducibility. For further explanation, see the sample calibration report that is included in this
document as an appendix. Variations on the number of flow set points, spacing of the set points,
and the number of repeated measurements can be discussed with the NIST technical contacts.
However, for data quality assurance reasons, we rarely will conduct calibrations involving fewer
than three flow set points and two sets of three flow measurements at each set point.