Storage vessel for liquid high-purity substances

A storage assembly for connection to an end-use device, said assembly including:

• a storage vessel for containing a liquid that is supplied to the end-use device;
• a first connecting piece that extends from said storage vessel, a first coupling that is attached to said first connecting piece for removably coupling said first connecting piece to an outlet connector of a pressurized gas line and a first shut-off device attached to said first connecting piece for regulating fluid flow in said first connecting piece;
• a second connecting piece that extends from said storage vessel, a second coupling that is attached to said second connecting piece for removably coupling said second connecting piece to an inlet connecting piece of the device and a second shut-off device attached to said second connecting piece for regulating fluid flow in said second connecting piece;
• a solvent vessel for containing a solvent;
• a third connecting piece extending from said solvent vessel to said first and second connecting pieces;
• a containment vessel for receiving spent solvent;
• a fourth connecting piece extending from said containment vessel to said first, second and third connecting pieces;
• an evacuation vessel integrally attached to said containment vessel, said evacuation vessel configured to function as a vacuum source and to be selectively connected to said containment vessel so that connection of said evaluation vessel to said containment vessel results in said containment vessel being in a low pressure state so spent solvent is drawn from said first, second, third and fourth connecting pieces, the outlet connector of a pressurized gas line and the inlet connecting piece of the device
• wherein, at least one of said solvent vessel or said evacuation vessel is attached to said storage vessel to form an integrated package with said storage vessel.