A variety of membrane technologies can be used for water purification. X-Flow’s ultrafiltration membranes can be found in most applications, due to their exceptional qualities in the removal of viruses and bacteria. For suspended colloidal matter however, UF membrane technology alone is insufficient. A membrane with tighter pore size is required here.
Molecular Weight Cut-off
Tight ultrafiltration (TUF) membranes provides the solution. Whereas a normal UF membrane has a Molecular Weight Cut-off (MWCO) of approximately 150 kilodalton (kDa) to 200kDa, a TUF membrane has a MWCO of 10 kDa to 20 kDa. The smaller the MWCO, the smaller the size of the particles the membrane can retain.
TUF membrane technology is especially useful for applications in which the purity of the water is essential.