Merck, PLTK06210, Regenerated Cellulose Membrane Filter, 30 kDa NMWCO

Ultrafiltration membranes are typically made from regenerated cellulose or polyethersulfone (PES). As a rule, the membrane nominal molecular weight cut-off (NMWCO) should be 2-3 times smaller than the molecular weight of the solute to be retained when using regenerated cellulose.