250 mL Bottle Top Vacuum Filter, 0.22 μm, PES, Sterile,1/pk, 24/pcs

The 250 mL Bottle Top Vacuum Filter with a 0.22 μm polyethersulfone (PES) membrane is a reliable solution for sterile filtration of cell culture media, buffers, and aqueous reagents. Designed to deliver a balance of fast flow rate and high retention efficiency, the PES membrane ensures low protein binding and consistent performance—ideal for applications requiring sterility and sample purity.

This filter unit is constructed with a durable, lightweight housing and features clear graduation markings on the bottle for accurate volume control. A universal hose connector allows compatibility with a variety of vacuum tubing sizes, making it easy to integrate into any lab setup.

Each unit is gamma-ray sterilized and individually packaged, and is certified to be endotoxin- and pyrogen-free, supporting safe and sterile laboratory workflows.

Product Features:

Membrane: Polyethersulfone (PES), 0.22 μm pore size

Volume capacity: 250 mL

Sterile: Gamma-irradiated

Low protein binding and high flow rate

Graduation marks for precise volume measurement

Universal hose connector fits multiple tubing sizes

Lightweight, durable structure for reliable handling

Specifications:

Packaging: 1 unit per pack, 24 packs per case

Operating temperature: 4–37°C

Working pressure: 0.03–0.06 MPa (adjust as needed to prevent foaming)

Filter diameter: Typically 50 mm (as appropriate for 250 mL units)

Important Notes:

Certified endotoxin-free and pyrogen-free

For laboratory use only

Do not use if packaging is damaged or compromised

Warnings:

Only connect to vacuum-rated containers

Not suitable for flasks or bottles exceeding 2L in capacity

This 250 mL, 0.22 μm PES vacuum filter offers high-efficiency sterile filtration with excellent sample protection, making it a trusted choice for a wide range of lab applications.