Microbiological examination device for sample of liquid under pressure, has second seal with arched profile, external annular end and internal annular end connected to elastomer seal

摘要

A microbiological examination device for a sample of liquid under pressure, has a second seal having an arched profile, an external annular end and an internal annular end. The external end bears against an annular transverse wall radially beyond a filtering membrane. The internal end is connected to an elastomer seal as a first seal. A microbiological examination device for a sample of liquid under pressure, comprises an intake body (2) having a reservoir; a filtering membrane (4) that closes the reservoir (5); and a drainage body (3). A liquid input aperture is made in one wall of the reservoir. The drainage body has a membrane-support mechanism for supporting the membrane on an opposite side from the reservoir; and a liquid output aperture (38). The intake and drainage bodies have mutual locking mechanisms (7, 31). The membrane is gripped annularly at a periphery between an annular transverse wall (32) of the drainage body around the membrane-support mechanism and a lateral wall (9) of the reservoir. The lateral wall has an elastomer seal (13) that forms an edge of the wall. The wall comes into contact with the membrane. The device is provided with a second seal (55) having an arched profile, an external annular end and an internal annular end. The external end bears against the annular transverse wall radially beyond the membrane. The internal end is connected to the elastomer seal as a first seal.