Borexino filling goes on: About 300 m³ of PC in the SSS.
In the following picture you can see the inside of the Borexino Stainless Steel Sphere as seen from camera #1. The water inside the SSS (and Inner Vessel) is being replaced by scintillator and buffer solutions (Water is on the bottom, while the less dense PC solutions are floating on top). About 300 m³ (~200t) of PC is already inside the SSS at this point.
About 300 m³ of PC in the SSS