Ge Healthcare Bio-sciences Ab

Cytiva Sweden Ab

Olle Bjernulf

Mats Lundkvist

Tomas Yngve Agren

Christer Olof Eriksson

Stefan Dargy

Disclosed is a fraction collector for dispensing liquids into plural receptacles (P,P) arranged in a two dimensional array. The fraction collector comprises a table () for supporting said receptacles, and an arm supported above the table, in tum supporting a liquid dispenser (), the fraction collector arm is rotatable about an arm axis (C) and the liquid dispenser is movable along the arm on a carriage(). Thereby, the dispenser is low cost and is repositionable simply above the receptacles as a result of said rotation and as a result of said movement along the arm, without occupying too much laboratory bench space.

Liquid fraction collector for liquid chromatography system

Disclosed is a fraction collector for dispensing liquids into plural receptacles (P,P) arranged in a two dimensional array. The fraction collector comprises a table () for supporting said receptacles, and an arm supported above the table, in turn supporting a liquid dispenser (), the fraction collector arm is rotatable about an arm axis (C) and the liquid dispenser is movable along the arm on a carriage(FIG.). Thereby, the dispenser is low cost and is repositionable simply above the receptacles as a result of said rotation and as a result of said movement along the arm, without occupying too much laboratory bench space.

Method for controlling a liquid chromatography system comprising a system pump and a column in fluid communication with the system pump by a fluid flow path, the method comprising the steps: registering the system pressure at a flow path position close to the system pump, controlling the operation of the system pump in response to the registered system pressure, estimating a pre-column pressure based on the registered system pressure, the characteristics of the flow path, and the viscosity and flow-rate of the liquid in the system, and controlling the operation of the system pump in response to the estimated pre-column pressure.

System and method for controlling a liquid chromatography systems

A rotary valve comprising a stator with an inner stator face, and a rotor with an inner rotor face arranged in sealing contact with the inner stator face, the rotor is rotatably movable to a plurality of rotor positions about a rotational axis relative to the inner stator face, the stator comprises a plurality of connection ports each being in fluidic contact with a corresponding valve orifice at the inner stator face and the rotor comprises two or more interconnection paths for selective fluidic interconnection of said valve orifices with respect to the rotor position, wherein the stator comprises, an inlet port, an outlet port, a component feed port, a component return port, and wherein the interconnection paths in the rotor are arranged to: &#x2014;in a first rotor position interconnect the inlet port with the outlet port, &#x2014;in a second rotor position interconnect the inlet port with the component feed port and the component return port with the outlet port, &#x2014;in a third rotor position interconnect the inlet port with the component return port and the component feed port with the outlet port.

Versatile rotary valve

The present invention relates to a gel sheet () for use in a spot picker device wherein said gel sheet is provide with reference marks ('&#x2033;) which can be used to determine if the gel sheet () has been deformed between the stages of scanning the gel sheet and picking spots out of the gel sheet (). The present invention also relates to a method of picking spots using such a gel sheet () and reference marks for use with the method.

Growing community of inventors

Uppsala, Sweden

Olle Bjernulf