During which process is the XRF analyzer's calibration checked?

The calibration of an XRF (X-ray fluorescence) analyzer is checked every 4 hours during a job to ensure accurate measurements of lead concentrations. This regular calibration check is essential because environmental conditions and the operator's technique can affect the analyzer's performance over time. By conducting checks at this interval, operators can detect any drift or inaccuracies that may arise, allowing for timely corrections to maintain the reliability of the data collected.

This practice is in accordance with industry standards, ensuring that the readings provided during lead inspections are precise and trustworthy. Continuous monitoring every few hours during a project helps ensure compliance with safety regulations and accuracy in assessing lead hazards.