Patent ID: 7897378

Claim:
A device for purifying or isolating nucleic acids comprising: a first hollow body with an inlet opening for receiving a sample and an outlet opening, a second hollow body with an inlet opening and an outlet opening, wherein the inlet opening of the second hollow body is functionally connected to the outlet opening of the first hollow body, the first hollow body and the second hollow body can be detached from one another, a nucleic acid-binding material is located inside the second hollow body and above the outlet opening of the second hollow body, the second hollow body has a smaller volume compared to the first hollow body and the first hollow body has a volume more than 5 ml, a vessel for receiving the first hollow body and the second hollow body, wherein the vessel comprises a cylindrical section at its inlet opening and a conical section at its end, and a receiving vessel with a size sufficient to enclose the second hollow body, wherein the receiving vessel comprises means for applying a pressure to the device.