Match the certificate to the instrument, range and measurement purpose. Traceability alone is not a fitness decision.
Core certificate fields
| Field | Check |
|---|---|
| Identity | Instrument serial no. |
| Range | Points suit use? |
| Result | Value and uncertainty |
| Date | Document and lab scope |
| Traceability | Reference chain |
Check the range of use
Compare points with the actual use range. If they do not match, assess suitability under the quality procedure.
Traceability shows a measurement chain; it does not alone show fitness for use.
Review results and performance
Compare result and uncertainty with criteria set for the intended use. Justify intervals using use, maker information, history and procedure; do not assume a universal frequency.
If results are out of limits
Restrict or stop use under procedure. Review effects on earlier records, lots and decisions with the quality lead.
Checklist
Serial number matches device
Points cover intended use
Uncertainty reviewed
Date and reference recorded
Keep a traceable file. Link certificate, device identity, assessment and next action in one file.