See these links to various Application Notes, papers, blog entries, etc. on calibration due dates, calibration certificate questions, traceability, and accreditation.
Link to Fluke Calibration Certifications and Accreditations web page (includes links to certificates for each Fluke Calibration lab, and link to the Fluke 17025 Quality Manual),
Link to Reasonable Audit Access Policy (including Traceability Audits),
Link to NIST Numbers Policy (NIST test report numbers no longer on our test reports),
Link to Application Note, A new format for Fluke Calibration Certificates of Calibration, us.flukecal.com/literature/articles-and-education/general-calibration-metrology-topics/application-notes/new-format-
Two common questions regarding calibration certificates are:
1. Calibration due date - "This date can be printed at the customer’s request. If a calibration due date is not provided, the calibration due date is left blank. This is done as a convenience for the customer so that they may enter their own calibration due date."
See this blog post Establishing calibration intervals for Fluke products,
2. Traceability - More info in the above Application Note but here is a highlight,
"In the traceability statement you may notice that the certificate of calibration does not explicitly state that Fluke is traceable to NIST. ISO 17025 requires laboratories to be traceable to the SI, which stands for the International System of Units. Traceability to the SI can be realized through an appropriately recognized National Measurement Institute (NMI) such as NIST in the United States, PTB in Germany, or NIM in China. Traceability may also be realized through ratiometric techniques or the unit of natural physical constants, which are under stringent metrological control. Fluke is an international corporation, and we obtain our measurement traceability from many different NMIs, depending on the locality and capability. Often due to the level of accuracy associated with our products, we are required to use the NMI that can provide the world’s best uncertainty for the particular parameter. It may even be a good idea for you to review your purchasing documentation and update the language to require traceability to the SI."
See this web page About Calibration for lots of general information - including links to the International Vocabulary of Metrology (VIM), and the Guide to the expression of Uncertainty Measurement (GUM),