PES syringe filter contains a Polyethersulfone (PES) membrane, which is a hydrophilic, low-protein-binding material with high flow rates and excellent chemical compatibility for aqueous solutions. PES filters are ideal for sterile filtration, especially in life sciences and pharmaceutical applications. A PES syringe filter is a disposable filtration device containing a polyethersulfone membrane, primarily used to filter aqueous solutions in laboratory and clinical settings. The membrane is hydrophilic, offering high flow rates and low protein binding, making it ideal for sterile filtration in life sciences.