Syringe Filter with PES Membrane

NEST Syringe Filter with PES Membrane – Efficient Filtration with Low Protein Binding

For laboratory applications involving the filtration or sterile filtration of small sample volumes, NEST syringe filters with a PES (polyethersulfone) membrane provide a practical solution. The hydrophilic PES membrane is characterised by low protein binding, making it particularly suitable for biological and aqueous solutions where minimising protein loss during filtration is important.

Using the filter is straightforward. Simply attach the syringe filter to the tip of a compatible disposable syringe and apply pressure to pass the sample through the membrane.

NEST PES syringe filters are suitable for laboratory workflows across a wide range of fields, including life science, biotechnology, the pharmaceutical industry, environmental applications, food and beverage, and agricultural laboratories. Within life science laboratories, they can be used for sterile filtration and preparation of small quantities of protein solutions, buffers, reagents, additives and pharmaceuticals.

PES membrane – ideal for protein-containing and aqueous solutions

The combination of a hydrophilic surface and low protein binding makes PES a suitable membrane material for many biological and aqueous samples. Its low protein-binding properties help reduce unwanted adsorption of proteins onto the membrane, thereby limiting protein loss throughout the filtration process.

The filter housing is made from medical-grade polypropylene (PP) and features a one-piece, injection-moulded construction. This robust design withstands high pressure while also helping to reduce the risk of leakage during filtration.

Suitable for applications including

• Sterile filtration of small sample volumes
• Filtration of protein-containing solutions
• Handling of buffers and reagents
• Filtration of biological and aqueous solutions
• Filtration of additives
• Preparation and filtration of pharmaceutical samples

Choose between 13, 25 or 30 mm

NEST PES syringe filters feature a pore size of 0.22 µm and are available in three different diameters: 13 mm, 25 mm and 30 mm.

The most suitable size depends, among other factors, on the volume of the sample being processed and the required filtration capacity. As the filter diameter increases, so does the available membrane area. Larger diameters are therefore well suited to applications involving greater sample volumes.

All variants are supplied sterile and individually packaged. The filters are intended for single use.

Find the right membrane for your sample

The most suitable membrane type depends on both the sample being filtered and the specific application. Below, you can compare the three membrane types available in the NEST range to help you select the appropriate option for your filtration needs.