Patent ID: 11891430
Assignee: HOFFMANN-LA ROCHE, INC.
Field: Biotechnology (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A method for producing an immunoglobulin solution comprising
a) providing an immunoglobulin solution with a concentration of at least 100 g/l, and
b) applying the immunoglobulin solution to a combination of a first and second filter unit, whereby the first filter unit comprises a pre-filter with a pore size of 3.0 μm and a main-filter with a pore size of 0.8 μm and the second filter unit comprises a pre-filter with a pore size of 0.45 μm and a main-filter with a pore size of 0.22 μm with a pressure of from 0.1 to 4.0 bar, and thereby producing an immunoglobulin solution.