PES Membrane Disc Filters, 0.22um, 293mm, Nonsterile, 25/Pk
GVS SKU: 1214759

Featuring a strong, microporous asymmetric polyethersulfone (PES) film, this 293mm membrane disc delivers reliable 0.22um filtration with a plain surface and a membrane thickness of 0.11 to 0.15mm. The naturally hydrophilic medium wets out without added surfactants, so it eliminates the wetting agents that can otherwise interfere with sensitive analyses. Each pack contains 25 nonsterile discs suited to high-throughput laboratory and process filtration.

Key PES Membrane Characteristics

• Naturally hydrophilic: wets spontaneously with water and aqueous solutions without added wetting agents that could contaminate the filtrate.
• Low protein and drug binding: a uniform pore structure maximizes recovery of critical proteins, drugs, and biological molecules.
• Low extractables: minimizes the risk of compromised results from leached compounds.
• Broad chemical compatibility: the high-temperature PES polymer is acid and base resistant for aggressive solvent and reagent streams.
• Superior burst strength: the durable film withstands aggressive handling and automated equipment while protecting membrane integrity.

Key Construction Characteristics

• Pore size: 0.22um for fine particulate removal and clarification.
• Diameter: 293mm disc format for large-area, high-throughput filtration setups.
• Membrane thickness: 0.11 to 0.15mm with a plain surface.
• Sterility: nonsterile.
• Pack: 25 discs per pack.

The uniform, asymmetric PES structure supports fast, consistent flow rates and high throughput across repeated runs. Its low-binding chemistry preserves sample integrity by maximizing analyte recovery, while the acid- and base-resistant polymer maintains performance with a wide range of aqueous and chemically demanding samples.

Diameter

293mm

Grid (Yes/No)

No

Material

Polyethersulfone (PES)

Membrane Color

White

Membrane Thickness (µm)

0.11 - 0.15mm

Pack Count

25

Pore Size (µm)

0.22

Sterility

Nonsterile

Wettability

Hydrophilic

• Sample Clarification Removes fine particulates from aqueous solutions and reagents prior to downstream analysis or processing.
• Protein and Enzyme Filtration Low protein binding maximizes recovery of critical proteins and enzymes during filtration.
• Pharmaceutical Filtration The acid- and base-resistant PES medium handles pharmaceutical intermediates and biologic solutions.
• Environmental Water Studies The large 293mm disc supports high-volume aqueous sample processing for water analysis.
• Cell Culture Media Filtration The hydrophilic, low-binding membrane suits tissue culture media and aqueous biological fluids.
• Microbiology The 0.22um pore size retains microorganisms for clarification and microbiological sample preparation.