Patent ID: 7819953

Claim:
An air trap for removing air in a liquid flowing through a chromatography system, wherein the air trap comprises a liquid inlet pipe ( 33 ), a liquid outlet pipe ( 35 ), a substantially cylindrical reservoir ( 25 ) between the inlet and outlet pipes, and an air outlet opening ( 37 ), the air outlet opening being openable and closable by means of a valve ( 38 ), wherein the liquid inlet and outlet pipes ( 33 , 35 ) connect to the reservoir ( 25 ) substantially tangentially to the reservoir wall ( 27 ), the inlet pipe ( 33 ) at a distance above the outlet pipe ( 35 ), arranged such that during use incoming liquid at a flow rate equal to its maximum permitted flow rate travels a spiral path from the inlet pipe ( 33 ) to the outlet pipe ( 35 ), wherein said air trap is a sanitary design.