What is the allowed quantity of lead in dry surface paint by testing with paint chip?

What is the allowed quantity of lead in dry surface paint by testing with paint chip?

• A. 1.0 mg/cm2
• B. 10,000 ppm
• C. 0.5% = 5000 ppm
• D. 5000 ppm

Answer: (D)

The test for lead in paint using a paint chip assesses how much lead is present by weight in the paint film. The standard limit to classify paint as lead-based is 0.5% lead by weight, which equals 5,000 parts per million. So the allowed maximum in dry surface paint when determined by a paint chip is 5,000 ppm (or 0.5%). This is why 5,000 ppm is the correct answer: it directly represents the regulatory threshold in the common unit used for chip testing. The other options relate to different types of lead measurements (such as dust-loading values) or simply express the same limit in a less typical form, but the relevant measure for paint chips is 5,000 ppm.

The test for lead in paint using a paint chip assesses how much lead is present by weight in the paint film. The standard limit to classify paint as lead-based is 0.5% lead by weight, which equals 5,000 parts per million. So the allowed maximum in dry surface paint when determined by a paint chip is 5,000 ppm (or 0.5%). This is why 5,000 ppm is the correct answer: it directly represents the regulatory threshold in the common unit used for chip testing. The other options relate to different types of lead measurements (such as dust-loading values) or simply express the same limit in a less typical form, but the relevant measure for paint chips is 5,000 ppm.