Sterile Syringe Filter PES Hydrophilic 0.22m 33mm - Lab Pack of 50

In this review the PEKYBIO Sterile Syringe Filter PES hydrophilic 0.22m, 33mm (pack of 50) is evaluated for lab use. The bottom line: this pack is aimed at researchers and lab technicians who need reliable, sterile filtration for HPLC, microbiology, and sample prep; the single biggest reason to buy is the combination of a low-protein-adsorption PES membrane and irradiation sterilization that keeps filters ready for immediate use. It is not a bulk industrial cartridge but a convenient set of individually wrapped filters suited to small-volume sterile work.

Key Features

• Hydrophilic PES membrane: delivers high flow rates with low protein adsorption, helping preserve sample integrity during filtration.
• Irradiation sterilization: each filter is gamma sterilized in compliance with ISO 11137 and individually packaged to remain sterile until use.
• 33mm diameter: a compact membrane size that fits common syringe setups for small-volume sample sterile filtration.
• Luer lock design: secure connection reduces leakage risk during transfer and filtration tasks.
• PP shell construction: durable polypropylene housing resists pressure and cracking for reliable handling.
• Chemical compatibility: works with water, alcohols, DMSO, and common acids and bases for broad laboratory use.

Who It's For

This product suits academic and industrial researchers, QC analysts, and lab technicians who routinely filter small volumes of media, buffers, proteins, reagents, or samples before HPLC or microbiological assays. The pack of 50 individually wrapped filters is useful for labs that require consistent sterile disposables without the need for larger filtration systems.

Those performing very large-scale sterile production or needing multiple membrane diameters or pore sizes for varied workflows should look elsewhere; this pack is focused on 0.22m pore size and a 33mm membrane diameter, which is ideal for small-volume sterile work rather than bulk processing.

Pros & Cons

Pros

• High flow, low protein adsorption PES membrane that preserves sensitive samples.
• Individually gamma sterilized units that remain sterile until opened.
• Robust PP shell and luer lock reduce leakage and mechanical failure during use.

Cons

• Only one pore size (0.22m) and one membrane diameter (33mm) in the pack limits flexibility for varied filtration needs.

Specifications

Our Verdict

The PEKYBIO PES sterile syringe filters in this 50-pack are a practical, cost-effective choice for labs needing dependable sterile filtration for small volumes. Their hydrophilic PES membrane, individual gamma sterilization, and secure luer lock make them good value for research and QC workflows where sample purity and low protein loss matter.

Frequently Asked Questions

Are these filters sterile out of the package?
Yes. Each filter is individually gamma sterilized and packaged to remain sterile until opened.

What solvents are compatible with the PES membrane?
The filters are compatible with water, alcohols, DMSO, and many common acids and bases used in laboratory work.

What is the membrane pore size and diameter?
The pack contains 0.22m pore size membranes with a 33mm membrane diameter, and the filter edge is green for quick identification.