The invention relates to a method for washing out gas bubbles from a target area of an extracorporeal blood circuit of a dialysis machine wherein a rinsing liquid flows through the target area entering through an inlet into the target area and the same exiting through an outlet wherein the inlet differs from the arterial port and the outlet differs from the venous port of the extracorporeal blood circuit. The invention further relates to a dialysis machine comprising an extracorporeal blood circuit and a control unit wherein the extracorporeal blood circuit has an inlet and an outlet for rinsing fluid wherein the inlet differs from the arterial port and the outlet differs from the venous port of the extracorporeal blood circuit and wherein the control unit is designed to execute a method according to the invention. The invention further relates to a disposable for dialysis treatment wherein the disposable comprises an arterial line elements of a blood pump a dialyzer and a venous line wherein the disposable has an interface in the arterial line for the inlet of rinsing fluid and an interface in the venous line for the outlet of rinsing fluid and wherein the interface for the inlet differs from the arterial port and the interface for the outlet differs from the venous port of the tube set.
