If a surface cannot be tested with XRF, what should the inspector do?

If a surface cannot be tested with XRF, what should the inspector do?

• A. Assume positive.
• B. Skip testing the surface.
• C. Submit a paint sample.
• D. Use a different instrument.

Answer: (C)

When XRF can’t test a surface, you need a definitive measurement from a laboratory. XRF is a quick screening tool, but it has limitations on certain surfaces or coatings where readings are unreliable or the instrument can’t access the paint properly. In those cases, collecting a paint sample and submitting it to an accredited lab provides an accurate determination of lead content. The lab analysis uses established methods to measure lead in the paint, which is essential for deciding whether the surface contains lead-based paint and what actions are required. This approach avoids guessing, ensures regulatory compliance, and gives a reliable basis for any necessary cleanup or remediation.

When XRF can’t test a surface, you need a definitive measurement from a laboratory. XRF is a quick screening tool, but it has limitations on certain surfaces or coatings where readings are unreliable or the instrument can’t access the paint properly. In those cases, collecting a paint sample and submitting it to an accredited lab provides an accurate determination of lead content. The lab analysis uses established methods to measure lead in the paint, which is essential for deciding whether the surface contains lead-based paint and what actions are required. This approach avoids guessing, ensures regulatory compliance, and gives a reliable basis for any necessary cleanup or remediation.