A test apparatus for automatically carrying out an integrity test on a filter device having a fluid inlet, a fluid outlet and a venting port, the test apparatus comprising: - a filter integrity testing device having a pressure sensor and/or a flowmeter; - an inlet connector fluidly connectable to the fluid inlet, wherein the inlet connector is fluidly connected via a wetting liquid supply valve to a wetting liquid supply, and wherein the inlet connector is fluidly connected via a drainage valve to a first drain; - an outlet connector fluidly connectable to the fluid outlet, wherein the outlet connector is fluidly connected via an outlet valve to the first or a second drain; - a venting port connector fluidly connectable to the venting port, wherein the venting port connector is fluidly connected via a measurement gas valve to the pressure sensor and/or the flowmeter of the filter integrity testing device, wherein the venting port connector is fluidly connected via a venting valve to a venting pipe, wherein the venting port connector is fluidly connected via the measurement gas valve to a measurement gas source, and wherein the venting port connector is fluidly connected via a dry gas valve to a dry gas source capable to provide gas having suitable sterilisation temperature; wherein the valves (V2, V3, V4, V5, V6, V7) are controllable by means of the filter integrity testing device. - a filter integrity testing device having a pressure sensor and/or a flowmeter; - an inlet connector fluidly connectable to the fluid inlet, wherein the inlet connector is fluidly connected via a wetting liquid supply valve to a wetting liquid supply, and wherein the inlet connector is fluidly connected via a drainage valve to a first drain; wherein the inlet connector is fluidly connected via a wetting liquid supply valve to a wetting liquid supply, and wherein the inlet connector is fluidly connected via a drainage valve to a first drain; - an outlet connector fluidly connectable to the fluid outlet, wherein the outlet connector is fluidly connected via an outlet valve to the first or a second drain; - a venting port connector fluidly connectable to the venting port, wherein the venting port connector is fluidly connected via a measurement gas valve to the pressure sensor and/or the flowmeter of the filter integrity testing device, wherein the venting port connector is fluidly connected via a venting valve to a venting pipe, wherein the venting port connector is fluidly connected via the measurement gas valve to a measurement gas source, and wherein the venting port connector is fluidly connected via a dry gas valve to a dry gas source capable to provide gas having suitable sterilisation temperature; wherein the venting port connector is fluidly connected via a measurement gas valve to the pressure sensor and/or the flowmeter of the filter integrity testing device, wherein the venting port connector is fluidly connected via a venting valve to a venting pipe, wherein the venting port connector is fluidly connected via the measurement gas valve to a measurement gas source, and wherein the venting port connector is fluidly connected via a dry gas valve to a dry gas source capable to provide gas having suitable sterilisation temperature;