Merck Patent Gmbh

Emd Millipore Corporation

Didier Metz

Stephane Olivier

Luc Felden

Stéphane Olivier

Marie Pressel

Marisa Hohnadel

Filtration head () for a filter system, comprising base () including filter support () for removable filter element () and a fluid path from one side of filter element () on filter support (), through filter element (), and to drainage outlet () of base (), and holder device () for removably attaching funnel () to base () to form a sample fluid reservoir on one side of filter element (), wherein holder device () comprises ring-shaped element () configured to extend about bottom peripheral flange () surrounding a lower end of funnel () and to selectively apply a biasing force on a radially outward protruding portion () of bottom peripheral flange () of funnel () to press funnel () against base (). The filtration head allows the use of cardboard funnels without risk of liquid leakage between the funnel and the base.

Filtration head for a filter system and funnel for use in conjunction with a filtration head

The invention relates to the filtering of liquid samples, preferably in a laboratory environment, for example for collecting micro organisms from the liquid sample for subsequent testing. The invention provides a method for filtering a liquid sample which comprises providing a blank of a deformable sheet material and a filtration medium, deforming the blank to form a funnel extending above and about the filtration medium, introducing the liquid sample to be filtered into the so formed funnel, and filtering the liquid sample from the funnel through the filtration medium, for example to a downstream receptacle. The method is accordingly based on the concept that the funnel is not or at least not completely preformed but provided in a form of a blank of a deformable material sheet which is deformed so as to form the funnel at the point and time of use during filtration.

Method and apparatus for filtering a liquid sample

A membrane support, usable for example in a membrane filtration device, comprises a support surface provided on an upstream side of the membrane support and adapted to support a flat filtration membrane thereon, and a drainage structure arranged below the support surface to collect a fluid that has passed the filtration membrane supported on the support surface and guide the fluid away to a downstream side, wherein the support surface has a plurality of recesses distributed over the support surface and formed to absorb expansions of the filtration membrane. The membrane support avoids fold formation of a membrane due to membrane expansion after hydration.

Membrane support and membrane filtration device

A fluid transfer device comprising a first reservoir () having a predetermined sub-ambient pressure and volume and a presealed opening (), a second reservoir () containing a predetermined volume of a fluid (M) and having a presealed opening (), and a chamber () having an internal space () and an inlet () to the space () adapted to be connected to the opening () of the second reservoir () and an outlet () from the space () adapted to be connected to the opening () of the first reservoir ().

Fluid transfer device and process of aseptically transferring a fluid

Process for treatment of residual nucleic acids present on the surface of laboratory consumables. The process combines two treatment phases: (1) treatment with ethylene oxide in gaseous phase; then (2) treating the surface with hydrogen peroxide in liquid phase or in gaseous phase. The effect of this treatment is the avoidance of the amplification of residual nucleic acids, in particular during PCR or TMA reactions.

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Stotzheim, France

Didier Metz