What are the appropriate testing methods?
Chemical Spot Testing A solution is applied to a painted surface which causes a chemical reaction (indicated by a color change) if lead is present. This test is quick and inexpensive, but it is not accurate. This test determines lead is present but not how much is present. It is also destructive; paint must be scraped to test lower level of sample. X-Ray Fluorescence This method involves expensive instrumentation which exposes a radioactive source to a surface to determine the percentage of lead. Results are immediately available and usually accurate depending on the training of the operator. It is expensive and may encounter some difficulties when sampling irregular surfaces or different subsurface materials such as brick or metal and may require laboratory verification. Paint Chip Sampling This method calls for cutting paint chips as samples to be sent to a laboratory for analysis. The advantages include its accuracy because these samples are analyzed in a laboratory. It is destructi
