Polyethersulfone Membranes

Polyethersulfone Membranes

Polyethersulfone (PES) membranes perform the removal of fine particles, bacteria, viruses, and fungi from liquids, making them a versatile membrane for applications such as sample preparation, sterile filtration and infusion therapy. 

PES is an inherently hydrophilic membrane that wets out quickly and completely resulting in fast filtration with superior flow rates and high throughputs. The hydrophilic nature of PES means no added surfactants are used to increase wettability. 

PES membrane is also extremely low protein binding minimizing the likelihood of target analyte binding. Polyethersulfone membranes are compatible with EtO, gamma irradiation, and autoclave methods of sterilization.

Polyethersulfone Membrane Applications

  • Blood glucose testing
  • Food, beverage, and pharmaceutical filtration
  • I.V. filters
  • Lateral flow assays
  • Particulate removal
  • Serum cholesterol testing
  • Groundwater testing
Dielectric Constant @ 1MHz3.7
Dielectric Strength @25µm thick (kV mm-1)232
Dissipation Factor @1MHz0.012
Elongation at Break (%)20-150
FlammabilityVTM-0 @ 25µm
Heat-sealing Temperature (°C)259-287
Initial Tear Strength (g µm-1)7.5-16.9
Permeability to Oxygen @25°C (x10-13 cm3. cm cm-2 s-1 Pa-1)0.4
Permeability to Water @38°C (x10-13 cm3. cm cm-2 s-1 Pa-1)1200
Specific Heat (kJ kg-1 K-1)1.1

Polyethersulfone Membrane Availability

Available in 0.1 and 0.2µm pore sizes, the polyethersulfone membrane provides sterilization of buffers, culture media, additives, and pharmaceutical filtration. If mycoplasma contamination is a concern, the 0.1µm PES membrane provides assurance that critical samples will not be contaminated.

The sheets are available in 25, 50, 125, 250 and 500µm thick films.

We can also cut the Polyethersulfone Membranes to shape and size according to your drawings.