What percentage of tests are blank in radon measurements?

In radon measurements, the typical percentage of tests that may yield blank results is around 5%. This figure stems from various factors including equipment calibration, environmental influences, and user handling of the measurement devices. A blank test result indicates that there was no detectible level of radon in the sample taken, which can occur in instances where the radon is outside the measurement threshold or if the test was improperly conducted.

Understanding this percentage is crucial for professionals in the field, as it helps in setting realistic expectations for testing outcomes and in ensuring that adequate procedures are in place to minimize the instances of blank tests, thus maintaining the integrity and reliability of radon measurement efforts.