Environmental Protection Agency (EPA) Model Lead Based Paint Risk Assessor Practice Test

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Prepare for the EPA Model Lead Based Paint Risk Assessor Test. Utilize flashcards and multiple-choice questions, each with hints and explanations. Ensure you are ready for your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

To ensure wipes are not contaminated before use, they should be analyzed by what type of sample?

Control sample
Composite sample
Blank sample
Field sample

The correct answer is: Blank sample

Using a blank sample to analyze whether wipes are contaminated before use is essential in ensuring their integrity and reliability in assessments. A blank sample is a clean sample that contains no target analytes, which in this case would be lead or other contaminants associated with lead-based paint. By analyzing the wipes against a blank sample, you can determine if any contamination exists prior to their application. This process helps establish a baseline for what is considered 'clean' and ensures that any subsequent readings taken with the wipes reflect the actual presence of lead rather than contamination from the wipes themselves. If the analysis shows that the wipes carried any contamination, it would invalidate the results obtained when they are used in testing environments. Hence, the role of a blank sample is crucial for quality control in lead hazard assessments.