33mm PES Hydrophilic Filters for Medical or Lab Use with Luer Connectors

Product Description

5 Micron Injection Disc Filter with standard Luer Lock Connections

This Medical-grade filter device consists of a 33mm diameter housing and high-quality hydrophilic PES membranes with sterilization grade pore size of 0.22µm.

The PES Hydrophilic Filter is a versatile consumable for life science, biotech labs and healthcare settings. Its design balances sterility (0.22 µm), efficiency (high flow rate via hydrophilicity), and sample preservation ((low protein adsorption)—making it the preferred choice for critical applications where contaminants, sterility, or protein recovery are top priorities.

Specifications

Recommended Applications

1. Microparticulate Filtration

    Removes unintended tiny particles (e.g., dust, glass shards, cellular debris, aggregated proteins) from liquids. The 0.22 µm pore size ensures consistent removal of particles down to the minimum required for sterility or clarity. Useful for preparing reagents, buffers, or media free of contaminants that could interfere with experiments or damage equipment.

2. Buffer Filtration

    Buffers are foundational in assays, electrophoresis, and protein studies. The hydrophilic surface ensures fast flow rates (critical for high-throughput labs) and minimal loss of buffer components via adsorption. Sterile filtration (0.22 µm) also eliminates microbial contaminants that could degrade the buffer over time.

3. Protein Filtration

    Proteins are highly sensitive to adsorption onto surfaces, which leads to reduced yield and purity. The hydrophilic PES membrane’s low protein-binding property preserves protein integrity and function—essential for downstream applications like mass spectrometry, crystallography, or therapeutic production. The 0.22 µm pore size also removes bacterial contaminants from protein solutions without altering the protein itself.

4. Medium Filtration

    Cell culture media (e.g., DMEM, RPMI) must be sterile to prevent microbial growth that could kill or contaminate cell lines. The 0.22 µm pore size provides reliable sterilization, while the hydrophilic surface enables rapid filtration of viscous media (reducing processing time and shear stress on sensitive nutrients). Low protein adsorption also prevents loss of serum proteins (e.g., fetal bovine serum) added to the media.

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