Abstract: The invention relates to monolithic sorbents which are clad with tubes made of metal. The metal cladding can be applied directly to the monolithic sorbents by cold forming. This enables very mechanically stable cladding of the monolithic sorbents with minimal dead space.

Abstract: The invention relates to monolithic sorbents which are clad with tubes made of metal. The metal cladding can be applied directly to the monolithic sorbents by cold forming. This enables very mechanically stable cladding of the monolithic sorbents with minimal dead space.

Abstract: The invention relates to a device for substance separation with monolithic sorbents which can be produced by means of 3-D printing. They comprise pressure- and solvent-stable thermoplastics.

Abstract: The present invention relates to a holder for monolithic sorbents in which a radial pressure can be exerted over the entire length of the sorbent by a conically tapering clamping tube.

Abstract: The present invention relates to a process for the production of monolithic separating columns using monolithic moldings whose diameter is reduced by grinding, and to separating columns having improved separation efficiency produced in this way, and to the use thereof.

Abstract: The present invention relates to improved casings of monolithic chromatography columns, and to the production and use thereof. The chromatography columns provided with these novel casings consisting of PPS and carbon fibres have both improved long-term stabilities to a very wide variety of solvents and pressure and also permanently improved separation properties.

Abstract: The present invention relates to a process for the production of monolithic separating columns using monolithic moldings whose diameter is reduced by grinding, and to separating columns having improved separation efficiency produced in this way, and to the use thereof.

Abstract: The invention relates to a plastic cartridge system including a cartridge having a plastic-covered column, said column including a monolithic sorbent and at least one closing cap which is applied to the ends of the column. The cartridge also includes a connecting system having at least one divided supporting screw which is held in position by a closing cap or a spacer ring, and at least one end piece which can be screwed onto a supporting screw in order to connect an elution agent inlet and an elution agent outlet.

Abstract: The invention relates to a plastic cartridge system essentially comprising a cartridge consisting of a plastic-covered column, said column comprising a monolithic sorbent and at least one closing cap which is applied to the ends of the column. The cartridge also consists of a connecting system comprising at least one divided supporting screw which is held in position by a closing cap or a spacer ring, and at least one end piece which can be screwed onto a supporting screw in order to connect an elution agent inlet and an elution agent outlet.

Abstract: Chromatography systems with devices for compressing the column packing and/or for pulsation damping have incorporate an additional device in which a preselected minimum pressure, which is independent of the eluent pressure, is combined with a second pressure component which is proportional to the eluent pressure.

Abstract: A sliding valve for withdrawing liquid or gaseous chemical products from a container has a cylindrical valve spool which slides axially in a bore through a valve housing. A first annular groove of the valve spool connects, in the open position of the valve, a product supply line to a product withdrawal line. On one side of this first annular groove there is a second annular groove which, in the open position, connects a gas supply line to a gas withdrawal line. An annular groove on the other side is connected to the second annular groove. By this arrangement, protective gas is admitted to the valve spaces on either side of the first annular groove, which handles the product, with the result that escape of the product to the outside, or penetration of impurities, are positively prevented.

Abstract: The application relates to a precolumn for a chromatography column in cartridge from which is packed with a sorbent and has been provided with frit and sealing elements, the precolumn being composed of an outer holder and, emplaceable therein, an inner sorbent-packed column ring.