Merck Patent Gmbh

Vincent Schaal

Mathieu Arrault

Philippe Rivat

Emmanuelle Simon

Raoul Weil

Christophe Di-Palo

Frederic Amstoutz

The invention concerns a filtration assembly for microbiological testing and a method of using the filtration assembly for that purpose. The filtration assembly () comprises a ring-like membrane support () holding a filtration membrane (), a cylindrical reservoir () of which opposite axial ends have openings and one axial opening is removably and fluid-tightly attachable to the membrane support () to define a sample volume adjacent to the filtration membrane () on one axial side of the membrane support (); and a lid device () removably and fluid tightly attachable to the other axial opening of the reservoir () to close the opening. Further, the lid device () is removably and fluid tightly attachable to the membrane support () so as to seal the one axial side of the membrane support () from the environment.

Filtration assembly and method for microbiological testing

The invention concerns a filtration assembly () for microbiological testing and a method of using the filtration assembly for that purpose. The filtration assembly () comprises a ring-like membrane support () holding a filtration membrane (), a cylindrical reservoir () of which opposite axial ends have openings and one axial opening is removably and fluid-tightly attachable to the membrane support () to define a sample volume adjacent to the filtration membrane () on one axial side of the membrane support (); and a drain member () removably and fluid tightly attachable to the membrane support () to define a drain channel space adjacent to the filtration membrane () on an opposite axial side of the membrane support ().

A rotor device for a peristaltic pump containing a housing, a supporting shaft extending in an axial direction and being mounted in the housing, a rotor which contains a rotor-body mounted on the supporting shaft and extending in a radial direction from the supporting shaft and a plurality of rollers, mounted on the radially outer portion of the rotor-body and a driving device connected to the supporting shaft for driving the rotor, in which the peristaltic pump further contains a number of roller-markers corresponding to the number of rollers, in which the roller-markers indicate a dead zone, the roller-markers are provided directly or indirectly on the supporting shaft.

Rotor device for peristaltic pump

A support apparatus for a filter membrane comprises a base support and a disc-shaped porous support member. The member is removably received in a seat portion of the base support in fluid communication with a drain. A bottom side of the disc-shaped porous support member is supported in a support plane. The bottom side of the member is unsupported in an area and the unsupported area is adjacent to a space in the seat portion of the base support that is located and dimensioned such that application of a force, onto the top side of the member at a location substantially within the boundaries of the unsupported area at the bottom side will cause the member to pivot/tilt into the space and lift above the support plane at a diagonally opposite side from the location where the force is applied so that it can be easily grasped and removed.

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Geispolsheim, France

Vincent Schaal