Which of the following is NOT a purpose of blank measurements?

Blank measurements are primarily used in radon measurement to ensure the accuracy and reliability of the test results. Specifically, their purposes include assessing the testing environment, calculating background levels of radon that may be present outside of the sample being tested, and accounting for any equipment errors that could impact the readings.

When it comes to calibration, this is a distinct process that verifies and adjusts the measurement device itself to ensure accurate readings. While calibration is critical in the overall testing process, it involves using known standards or reference materials to adjust the device rather than utilizing blank measurements, which do not provide the necessary reference points for calibration.

Thus, recognizing the role of blank measurements is crucial for maintaining the integrity of radon testing, but they do not serve the specific function of device calibration.