What is a minimum requirement that must be included in calibration labels?

In the context of calibration labels, a minimum requirement is typically to include the calibration date. This date is critical because it indicates when the calibration was performed and helps ensure that a device or instrument is used within its certified accuracy timeline. Regular calibration is essential for maintaining the reliability and accuracy of measurements, and knowing when the last calibration occurred allows users to assess whether the equipment is due for recalibration. Including this information directly on the calibration label serves as an immediate reference, ensuring proper maintenance and compliance with quality standards.

While other details such as calibration type, technician name, and approval signature are important for various quality assurance and traceability purposes, the calibration date stands out as a fundamental requirement that supports the ongoing reliability of the measuring equipment.