A transfer standard is an artifact that is produced at a standards laboratory to be sent to another laboratory for the purpose of calibration of the 2nd laborat

A transfer standard is an artifact that is produced at a standards laboratory to be sent to another laboratory for the purpose of calibration of the 2nd laboratory's processes and equipment. "Measurement Assurance Programs are quality control programs for calibrating a customer's entire measurement system. In a typical MAP, a stable artifact or set of artifacts called transfer standards are first measured by NIST and then sent to a customer's laboratory for a series of measurements. The transfer standards are then returned to NIST for re-measurement, along with the participating laboratory's results. NIST reports its comparative findings to the customer and, when necessary, offers guidance on achieving and maintaining measurement quality. Successful use of a NIST MAP requires that the customer make periodic measurements of in-house check standards to estimate their measurement process uncertainty and to ensure that the measurement process remains in a state of statistical control. Unless a laboratory has a measurement quality assurance program to monitor its own measurement process parameters continuously, there is no value in participating in a MAP. In fact, NIST recommends that its customers establish and use a measurement quality assurance program to monitor their measurement parameters, whether or not they participate in a MAP." [1] https://www.nist.gov/calibrations/policies#:~:text=In%20a%20typical%20MAP%2C%20a,with%20the%20participating%20laboratory's%20results https://www.nist.gov/calibrations/policies#:~:text=In%20a%20....