Polyesthersulfone Filter

Polyesthersulfone (PES) membrane for aqueous solutions provides removal of fine particles, bacteria, viruses, and fungi making it 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. PES membrane is compatible with EtO, gamma irradiation, and autoclave methods of sterilization.

Specification :

Diameter: 13mm-300mm
Pore size: 0.1, 0.2, 0.45, 0.8, 1.0micron

SKU: Polyesthersulfone Filter Category: Filtration Tag: Filtration

High-Flow, Low-Protein-Binding Filtration with Polyethersulfone (PES) Filters

Optimize sensitive biological and pharmaceutical workflows with our Polyethersulfone (PES) Filter —hydrophilic membrane filters engineered for high throughput, minimal sample loss, and exceptional clarity. Widely used for sterile filtration of cell cultures, buffers, sera, and protein solutions, PES membranes combine high flow rates with ultra-low protein binding, making them ideal for applications where sample integrity and speed are critical.

Engineered for Biological and Diagnostic Applications

Our Polyethersulfone Filters feature a symmetric, open-pore structure that enables rapid filtration without compromising retention efficiency. Available in standard pore sizes (0.1 µm, 0.22 µm, and 0.45 µm) and diameters from 13 mm to 142 mm, they are compatible with syringe filter housings, vacuum filtration units, and sterile bottle-top systems—ensuring seamless integration into lab and production environments.

Ultra-Low Protein Binding – Preserves activity and concentration of proteins, enzymes, and growth factors.
High Flow Rates – Open pore structure reduces filtration time, even with viscous or high-volume samples.
Naturally Hydrophilic – No pre-wetting required; ready for immediate use with aqueous solutions.
Low Extractables & Endotoxin Levels – Meets USP <85> and EP 2.6.14 standards for parenteral and diagnostic use.
Autoclavable at 121°C – Suitable for sterile and aseptic processing environments.
Excellent Clarity & Smooth Surface – Supports visual inspection and downstream analytical techniques.

Trusted in Life Science and Quality Control

From vaccine production and monoclonal antibody purification to diagnostic reagent preparation and cell therapy workflows, PES Filters are the preferred choice for labs requiring speed, sterility, and sample recovery. Their biocompatibility and compliance with GMP, ISO 13485, and FDA guidelines ensure reliability in regulated settings.

Whether you’re filtering media for cell culture or clarifying sensitive biologics, our Polyethersulfone filters deliver performance you can count on—without sacrificing your sample.

Filtration that flows fast—and holds nothing back.