calibration certificate 

https://doi.org/10.1351/goldbook.08011
Document issued by a technically competent organization providing information about a calibration.
Notes:
  1. The document may include a statement describing the calibration procedure and the calibrators (calibrants) applied along with the calibration curve, calibration diagram, or other presentations of the calibration.
  2. Calibration certificates are often valid for a stated period of time, although this is not stipulated in ISO/IEC 17025.
  3. The authority of the organization issuing the document comes from its demonstrated technical competence.
Source:
PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 1002 (https://doi.org/10.1515/pac-2019-0819)