How should an amended calibration certificate be executed?

An amended calibration certificate must be signed and dated by the quality manager to maintain its validity and to ensure proper traceability. The signature serves as a form of verification that the amendment has been reviewed and approved by a responsible person within the organization, which adds credibility to the document. Dating the certificate confirms when the amendment was made, providing an accurate timeline of the calibration records.

This practice aligns with quality management system requirements and helps keep a clear audit trail. Maintaining a signed and dated document is essential for regulatory compliance and for maintaining the integrity of calibration data.