The BioPAT® Viamass Support is required to use the BioPAT® Viamass on the 500L and 1000L Biostat® STR bag Gen1. Depending on how the bag is installed, the probe disc may not be positioned, height-wise, in the center of the probe window. If the probe disc is positioned too far down, the STR Viamass Support can be installed with the connecting element and connection cable pointing upwards. The BioPAT® Viamass Support has a lenght of 60mm.