Payloads Airborne Particulate Monitor (APM): The APM hardware was relocated from the US Lab to Node 3. This hardware is routinely moved to different locations to allow monitoring of the particulate environment in those areas. Although requirements exist for maximum allowable concentrations of particulate matter, currently no measurement capability verifies whether these requirements are met. …
Click here for original story, ISS Daily Summary Report – 12/21/2020
Source: ISS Report