n

Nanofiltration membrane: Porous membrane with the pores in the range 1 - 30 nm used in baromembrane process of nanofiltration. Efficiency of such membrane is often enhanced by the presence of ion-exchange groups in the material of this membrane.

Nanofiltration: Pressure-driven membrane-based separation process in which particles and dissolved molecules smaller than about 2 nm are rejected.

Nuclear membrane): see Track etched membrane.