Installation for treating a biological liquid

Installation for treating a biological liquid, comprising:

• a circulation pump having an inlet and an outlet;
• a filter element;
• a container for collecting treated liquid;
• a first circuit section connecting a source of said biological liquid to an inlet orifice of said filter element, including a circuit element adapted to cooperate with said circulation pump to circulate said biological liquid in said first circuit section;
• a pre-filter element between said outlet of said circulation pump and said inlet orifice of said filter element, said pre-filter element having an inlet and an outlet;
• a first pressure sensor in fluid communication with said pre-filter element inlet and a second pressure sensor in fluid communication with said pre-filter outlet;
• a second circuit section, connecting an outlet orifice of said filter element to said treated liquid collecting container;
• wherein said treated liquid collecting container is a disposable bag, said first circuit section and said second circuit section are disposable and said installation further includes:
• a first cart carrying said pump;
• and
• a second cart including a housing for said collecting bag, separable from the first cart and adapted to be at least partly nested in said first cart.