PES Membrane Disc Filters, 0.22um, 25mm, Hydrophilic, Nonsterile, 100/Pk
GVS SKU: 1214193

Featuring a strong, microporous asymmetric polyethersulfone (PES) membrane, these 25mm hydrophilic discs deliver 0.22um sterilizing-grade filtration with a membrane thickness of 0.11 to 0.15mm. The naturally hydrophilic media wets out without added surfactants, eliminating wetting agents that can interfere with downstream analyses, and supports the fast flow rates and high throughput required in demanding aqueous applications.

Key PES Membrane Characteristics

• Naturally hydrophilic: Wets out spontaneously without added wetting agents, avoiding extractables that could compromise results.
• Low protein and drug binding: A uniform pore structure maximizes recovery of critical proteins and drugs.
• Broad chemical compatibility: The high-temperature PES polymer is resistant to acids and bases for a wide range of solutions.
• Low extractables: Helps ensure test results are not compromised by leachable wetting agents or other extractables.
• Durable construction: Strength and durability make the membrane well suited to aggressive handling and automated equipment.

Key Construction Characteristics

• Material: Polyethersulfone (PES) membrane.
• Pore size: 0.22um for bacterial retention and sterilizing-grade filtration.
• Format: 25mm diameter disc with a plain surface.
• Sterility: Nonsterile, supplied 100 per pack.

These discs provide consistent, reproducible filtration that protects sample integrity across buffers, media, and biological fluids. The uniform pore structure maintains reliable flow and retention, while the low-binding, low-extractable media preserves the composition of sensitive samples.

Diameter

25mm

Grade

Plain

Material

Polyethersulfone (PES)

Membrane Color

White

Membrane Thickness (µm)

110-150

Pack Count

100

Pore Size (µm)

0.22

Sterility

Nonsterile

Wettability

Hydrophilic

• Sterile Filtration The 0.22um pore size provides bacterial retention for sterilizing-grade filtration of buffers, media, and aqueous solutions.
• Microbiology Hydrophilic PES media supports reliable preparation of solutions where complete bacterial retention is required.
• Protein and Enzyme Filtration Low protein and drug binding maximizes recovery of critical biomolecules during filtration.
• Pharmaceutical Sample Prep Low-extractable construction preserves sample composition for pharmaceutical and life science workflows.
• Biological Fluid Filtration Naturally wetting media delivers fast, reproducible flow when filtering sensitive biological samples.
• Tissue Culture Media Filtration Broad chemical compatibility and low binding make the membrane suitable for clarifying and sterilizing culture media.