When should XRF calibration checks be performed during inspections?

Calibration checks for XRF (X-Ray Fluorescence) equipment are crucial to ensure the accuracy and reliability of measurements taken during inspections. Performing these checks at the beginning and end of inspections allows the user to confirm that the instrument is functioning correctly and has not drifted from its calibrated state due to factors like environmental conditions, battery levels, or prolonged usage.

Conducting checks every four hours provides additional assurance that any minor drifts or anomalies can be detected and corrected during the inspection process. This frequency is essential in maintaining the integrity of the data collected, especially in settings where precise measurements of hazardous materials or contaminants are critical. By adhering to this routine, inspectors can ensure the quality of their results, making it a best practice in the field of risk assessment and inspection protocols.