Lead-based paint is defined by what concentration using laboratory analysis methods?

Lead-based paint is defined by what concentration using laboratory analysis methods?

• A. 1 mg/cm^2 using laboratory analysis
• B. 0.5% using laboratory analysis
• C. 2.0% using laboratory analysis
• D. 0.05% using laboratory analysis

Answer: (B)

Lead-based paint is defined by the amount of lead in the paint when measured in a lab. The standard threshold used in U.S. regulations is 0.5% lead by weight. If a laboratory analysis shows 0.5% lead or more in the paint, it is considered lead-based paint. This lab-by-weight definition corresponds to about 5,000 parts per million. The alternative measure of 1 mg per square centimeter is a different way to express lead concentration (per area) used in some hazard assessments, but the lab-analysis definition for lead-based paint relies on the 0.5% by weight threshold.

Lead-based paint is defined by the amount of lead in the paint when measured in a lab. The standard threshold used in U.S. regulations is 0.5% lead by weight. If a laboratory analysis shows 0.5% lead or more in the paint, it is considered lead-based paint. This lab-by-weight definition corresponds to about 5,000 parts per million. The alternative measure of 1 mg per square centimeter is a different way to express lead concentration (per area) used in some hazard assessments, but the lab-analysis definition for lead-based paint relies on the 0.5% by weight threshold.