Abstract: The present invention relates to a preparative chromatography system (200, 500, 800) and a chromatography process (400, 700) adapted to repetitive cycling of chromatography volumes. The system (200, 500, 800) comprises at least two upstream pumps (203a, 803a, 203b, 803b) and separate flow paths (220) from process liquid sources to the chromatography device (200, 500, 800). The system (200, 500, 800) is arranged to prime one flow path (220) with one process liquid while providing another process liquid to the chromatography device and thereby minimizing the hold-up volume of the system (200, 500, 800).

Abstract: The present invention relates to a method for monitoring operational status in a column capture chromatography system configured for cyclical repetitive purification performed on a volume of sample feed comprising at least one product configured to be captured in the column during loading. The method comprises: performing (51) a purification cycle; measuring (52) at least one parameter during the purification cycle indicative of breakthrough of the at least one captured product after the column during loading of sample feed; when breakthrough is detected, reducing (56a) the amount of sample feed loaded during loading in the next purification cycle; and repeating the steps to perform another purification cycle. Each purification cycle comprising: loading an amount of sample feed onto the column, washing the column and eluting the at least one product.

Abstract: A chromatography system comprising at least two chromatography units (3) connected in parallel, wherein said at least two chromatography units (3) each comprises a convection-based chromatography material, wherein an initial difference in back pressure provided from the different chromatography units (3) is compensated dynamically during run of the system due to a change of chromatography unit properties provided during the chromatography process.

Abstract: The present invention relates to a method for purifying a feed comprising at least one target product in a chromatography system having a plurality of purifying units, each having an inlet and an outlet, and a valve assembly having an outlet port and an inlet port. The inlet and the outlet of each purifying unit being connected to a respective port of the valve assembly. The method comprising loading (S10) the plurality of purifying units with feed provided through the inlet port of the valve assembly by sequentially connecting each purifying unit to the inlet port of the valve assembly: eluting (S12) the plurality of purifying units using an elution provided through the inlet port of the valve assembly by sequentially connecting each purifying unit to the inlet port of the valve assembly: and collecting (S14) the at least one target product from the outlet port of the valve.

Abstract: The present invention provides a process for recovering a viral product from a composition comprising said product and product-related impurities, which process comprises contacting the composition with a functionalised chromatography medium comprising one or more polymer nanofibres, wherein the viral product comprises a plurality of viruses, virus particles/virions, viral cores, membrane-stripped viruses, viral cores with outer membrane(s) removed and/or capsids removed, or proviruses, each of which contains one or more polynucleotides, and wherein the product-related impurities comprise a plurality of viruses, virus particles/virions, virus-like particles, viral cores, membrane-stripped viruses, viral cores with outer membrane(s) removed and/or capsids removed or proviruses, each of which is substantially devoid of polynucleotides.

Abstract: The present invention provides a process for recovering a viral product from a composition comprising said product and product-related impurities, which process comprises contacting the composition with a functionalised chromatography medium comprising one or more polymer nanofibres, wherein the viral product comprises a plurality of viruses, virus particles/virions, viral cores, membrane-stripped viruses, viral cores with outer membrane(s) removed and/or capsids removed, or proviruses, each of which contains one or more polynucleotides, and wherein the product-related impurities comprise a plurality of viruses, virus particles/virions, virus-like particles, viral cores, membrane-stripped viruses, viral cores with outer membrane(s) removed and/or capsids removed or proviruses, each of which is substantially devoid of polynucleotides.