The OSHA reference method is an analytical technique used for OSHA personal samples.

• A. True
• B. False (OSHA Reference Method is not used)
• C. False (some other method)
• D. Not applicable

Answer: (A)

The main idea here is that OSHA reference methods are standardized procedures for measuring airborne contaminants in worker exposure assessments. For personal samples—air collected from a worker’s breathing zone with a calibrated pump—the analytical part of the method must be one of OSHA’s approved reference methods (or an equivalent method). This ensures that results are produced in a consistent, validated way across labs and used correctly for regulatory decisions. A reference method typically specifies everything from the sampling media and flow rate to sample handling and the analytical technique (such as a particular instrument setup and calibration). So using an OSHA reference method for personal samples is the established approach, which is why the statement is true.