Filtration unit, method for producing same, method for detecting microorganisms and use of the filtration unit
AssigneeSartorius Stedim Biotech GmbH
InventorsKarl Pflanz, Stephan Scholz, Jörg Hosch
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Abstract
The present invention relates to a filtration unit with a filtration membrane, nutritive cardboard disc and, if necessary, a support structure, wherein the nutritive cardboard disc and/or the support structure comprises a solid, water-soluble nutrient medium and a water-soluble and/or water-swellable polymer, a method for producing the filtration unit, a method for detecting microorganisms in a fluid, wherein the filtration unit is used, and the use of the filtration unit for detecting microorganisms in a fluid.
Claims17
A filtration unit comprising a filtration membrane, a nutrient pad and a support structure, wherein at least one from the nutrient pad and the support structure comprises a solid, water-soluble growth medium and a water-soluble and/or water-swellable polymer,
- wherein the support structure has a carrier element and a lateral wall that define a cavity, the nutrient pad and the filtration membrane are arranged in the cavity, and the nutrient pad is arranged between the filtration membrane and the carrier element, and
- wherein edge regions of the filtration membrane are fluid-tightly connected to the support structure.
A filtration unit comprising a filtration membrane, a nutrient pad and a support structure, wherein at least one from the nutrient pad and the support structure comprises a solid, water-soluble growth medium and a water-soluble and/or water-swellable polymer,
- wherein the support structure has a carrier element and a lateral wall that define a cavity, the nutrient pad and the filtration membrane are arranged in the cavity, and the nutrient pad is arranged between the filtration membrane and the carrier element,
- wherein the lateral wall and the carrier element are each in the form of a cylinder open at both ends, each of which has an inlet at one of the open ends and an outlet at the open end opposite the inlet,
- wherein the inlet of the carrier element is situated in the direction of the cavity and, starting from the nutrient pad, the inlet of the lateral wall is situated in the direction of the filtration membrane,
- wherein the inlet of the carrier element corresponds to the outlet of the lateral wall,
- wherein the inlet of the lateral wall corresponds to the inlet of the filtration unit and the outlet of the carrier element corresponds to the outlet of the filtration unit, and
- wherein a fluid to be filtered enters the filtration unit through the inlet of the filtration unit, passes through the filtration membrane, nutrient pad and support structure, and exits in a filtered state at the outlet of the filtration unit.
Dependencies are inferred from the claim text.