Qiagen Gmbh

Michael Collasius

Konstantin Lutze

Oliver-Guido Venschott

Pius Fink

Ulf Friederichs

Marco Di Berardino

The invention relates to a dispensing device and a method for dispensing liquids, preferably reagents, in an essentially automated and finely dosed manner. The dispensing device comprises a first duct that is connected to a storage element for storing the liquid to be dispensed. In addition, a conveying element for conveying the liquid through the fist duct is provided, whereby the liquid has to be dispensed. Liquid is transported from the storage element and is conveyed into the first duct by the conveying element. Moreover, the dispensing device is provided with a closing device that is arranged downstream in the conveying direction of the liquid in relation to the conveying element and serves for quickly closing and quickly opening the first duct. The aim of the invention is to regulate the pressure of the liquid in the region between the conveying element and the closing device. A device for regulating the pressure of the liquid in this region is provided. Liquids can be very exactly and repeatedly dispensed in short time intervals by means of the inventive device and the inventive method. In another embodiment of the invention, a dispensing element is provided for evenly dividing the liquid stream into partial streams.

Dispenser

A device for selectively filtering liquid samples in compartments comprising inlet and outlet openings of a carrier body under reduced pressure and vacuum drying of the sample liquid in the area of the outlet openings of the compartments. The device comprises a vacuum pump for producing two levels of subpressure, a suction conduit, and a chamber comprising an interior space limited walls by a top wall having an opening with an edge, a bottom wall, and lateral walls connecting the top and bottom walls. A lid or the carrier body with outlet openings directed towards the interior space of the chamber can be placed in a substantially gastight manner on the opening with an edge. One of the lateral walls is formed as an access wall which is opened and substantially gastightly sealed or introducing the carrier body into the interior space of the chamber.

Device for selectively filtering under reduced pressure and for vacuum drying sample liquids or drops of sample liquids as well as use of said device

The invention relates to a device for processing, especially for filtering and removing, fluids and fluid remnants in a low-pressure chamber ( ). The device comprises a vacuum pump ( ) and a separator ( ), whereby the low-pressure chamber is connected to the separator via a first line ( ), and the low-pressure chamber is connected to the vacuum pump via a second line ( ) so that the low-pressure chamber can be evacuated while bypassing the separator. The invention also relates to a low-pressure chamber for processing fluids which is equipped with a heating plate with holes for heating areas of the interior space of the low-pressure chamber.

Device for filtering and removing fluids

A device for selectively filtering liquid samples in compartments comprising inlet and outlet openings of a carrier body under reduced pressure and vacuum drying drops of the sample liquid in the area of the outlet openings of the compartments. The device comprises a vacuum pump for producing two levels of subpressure, a suction conduit, and a chamber comprising an interior space limited by a top wall having an opening with an edge, a bottom wall, and lateral walls connecting the top and bottom walls. A lid or the carrier body with outlet openings directed towards the interior space of the chamber can be placed in a substantially gastight manner on the opening with an edge. One of the lateral walls is formed as an access wall which is opened and substantially gastightly sealed for introducing the carrier body into the interior space of the chamber.

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Hombrechtikon, Switzerland

Michael Collasius