What must be done when issuing an amended calibration certificate?

The process of issuing an amended calibration certificate requires that an exact copy of the original certificate be made. This is essential to maintain a clear and accurate record of the calibration history, ensuring that all documents are traceable and easy to understand. By creating an exact copy of the original, it allows for proper documentation and validation of the changes made, which is critical not only for compliance with regulatory standards but also for maintaining the integrity of the calibration records.

This method ensures that a clear distinction exists between the original calibration results and any modifications or updates made. Proper documentation is a fundamental aspect of metrology and quality control, reinforcing trust in the calibration process.