Abstract: Filtration head (1) for a filter system, comprising base (2) including filter support (3) for removable filter element (4) and a fluid path from one side of filter element (4) on filter support (3), through filter element (4), and to drainage outlet (5) of base (2), and holder device (6) for removably attaching funnel (7) to base (2) to form a sample fluid reservoir on one side of filter element (4), wherein holder device (6) comprises ring-shaped element (8) configured to extend about bottom peripheral flange (7a) surrounding a lower end of funnel (7) and to selectively apply a biasing force on a radially outward protruding portion (7b) of bottom peripheral flange (7a) of funnel (7) to press funnel (7) against base (2). The filtration head allows the use of cardboard funnels without risk of liquid leakage between the funnel and the base.

Abstract: Filtration head (1) for a filter system, comprising base (2) including filter support (3) for removable filter element (4) and a fluid path from one side of filter element (4) on filter support (3), through filter element (4), and to drainage outlet (5) of base (2), and holder device (6) for removably attaching funnel (7) to base (2) to form a sample fluid reservoir on one side of filter element (4), wherein holder device (6) comprises ring-shaped element (8) configured to extend about bottom peripheral flange (7a) surrounding a lower end of funnel (7) and to selectively apply a biasing force on a radially outward protruding portion (7b) of bottom peripheral flange (7a) of funnel (7) to press funnel (7) against base (2). The filtration head allows the use of cardboard funnels without risk of liquid leakage between the funnel and the base.

Abstract: 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.

Abstract: A vacuum filtration head (1) having a receptacle for a support (2) for a membrane filter (3) for microbiological testing of a liquid substance to be drawn from an upstream side of the membrane filter (3) to a downstream side of the membrane filter (3) through the membrane filter (3), or the support (2) for such membrane filter (1), a drain chamber (4) located downstream of the support (2) and communicating with a downstream side of the membrane filter (3) receiving the liquid substance passed through the membrane filter (3), and a drain channel (5) communicating with the drain chamber (4) at an opening (9) and communicating with a vacuum. A protective shield (6) is arranged in the filtration head (1) interfering with a fictive direct line connection while retaining a fluid path (7) to the drain channel (5) past the protective shield (6).

Abstract: Filtration head (1) for a filter system, comprising base (2) including filter support (3) for removable filter element (4) and a fluid path from one side of filter element (4) on filter support (3), through filter element (4), and to drainage outlet (5) of base (2), and holder device (6) for removably attaching funnel (7) to base (2) to form a sample fluid reservoir on one side of filter element (4), wherein holder device (6) comprises ring-shaped element (8) configured to extend about bottom peripheral flange (7a) surrounding a lower end of funnel (7) and to selectively apply a biasing force on a radially outward protruding portion (7b) of bottom peripheral flange (7a) of funnel (7) to press funnel (7) against base (2). The filtration head allows the use of cardboard funnels without risk of liquid leakage between the funnel and the base.

Abstract: 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.

Abstract: 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.

Abstract: A fluid transfer device comprising a first reservoir (1) having a predetermined sub-ambient pressure and volume and a presealed opening (1a), a second reservoir (2) containing a predetermined volume of a fluid (M) and having a presealed opening (2a), and a chamber (3) having an internal space (6) and an inlet (4) to the space (6) adapted to be connected to the opening (2a) of the second reservoir (2) and an outlet (5) from the space (6) adapted to be connected to the opening (1a) of the first reservoir (1).

Abstract: 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.

Abstract: 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.

Abstract: A fluid transfer device comprising a first reservoir (1) having a predetermined sub-ambient pressure and volume and a presealed opening (1a), a second reservoir (2) containing a predetermined volume of a fluid (M) and having a presealed opening (2a), and a chamber (3) having an internal space (6) and an inlet (4) to the space (6) adapted to be connected to the opening (2a) of the second reservoir (2) and an outlet (5) from the space (6) adapted to be connected to the opening (1a) of the first reservoir (1).

Abstract: 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.

Abstract: 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.

Abstract: The invention relates to a new process for treatment of residual nucleic acids present on the surface of laboratory consumables. This process combines two treatment phases: i) Treating with ethylene oxide in gaseous phase; then ii) Treating said surface with hydrogen peroxide in liquid phase or in gaseous phase; The effect of this treatment is to avoid the amplification of said residual nucleic acids, in particular during PCR or TMA reactions.