About 3M and the Membranes Business Unit from 3M 3M harnesses the power of science to make the world safer and more efficient. We use science to solve impossible challenges, and to stretch toward our vision of advancing every company, enhancing every home and improving every life. 3M Membranes Business Unit, formerly known as Membrana, is the largest independent producer of membranes for medical and industrial filtration applications worldwide; an expert in membrane technology and development! The 3M Membranes Business Unit offers a wide range of capillary and flat sheet membranes, for hemodialysis, blood oxygenation and plasmapheresis. In addition, we offer innovative medical devices for therapies such as plasma separation, cascade filtration or separation of blood components for transfusion medicine.