What type of device is the Activated Charcoal Adsorption Device classified as?

The Activated Charcoal Adsorption Device is classified as a Time Integrating Radon Measurement Device because it collects radon gas over a specified period, typically ranging from a few days to weeks. During this time, radon gas diffuses into the activated charcoal, which then adsorbs the radon. After the exposure period, the device is sent to a laboratory for analysis, where the amount of radon gas that has been captured is measured. This integration over a longer time frame provides a more accurate average concentration of radon levels in the environment, as it takes into account fluctuations in radon levels that may occur throughout the day.

In contrast, continuous measurement devices provide real-time data and can show instant fluctuations in radon levels. Grab or sniffing devices provide immediate readings but do not offer time-integrated data, while instant measurement devices offer immediate results but also lack the integration over a longer period necessary to understand average radon exposure adequately. The activated charcoal method’s time-integrating nature is what differentiates it and makes it a widely accepted method for assessing radon levels in residential environments over a given timeframe.