Human Research Facility (HRF) GDS tank photo: The crew took photos of the pressure gauges on the HRF)Gas Delivery System (GDS) gas cylinders which support the Portable Pulmonary Function System (PFS). This is a nominal, periodic requirement to monitor the pressures in the system.  The Portable PFS is an autonomous multi-user facility supporting a broad range …

Source: ISS Daily Summary Report - 7/09/2019