PES Membrane Filter Discs, 0.22um, 47mm, Nonsterile, White, 100/Pk
GVS SKU: 1214465

Featuring a strong, microporous asymmetric polyethersulfone (PES) film, these 47mm membrane filter discs deliver dependable 0.22um filtration of aqueous solutions and biological fluids. The membrane is naturally hydrophilic, so it wets out without added wetting agents that could interfere with downstream analyses, and its uniform pore structure supports reliable, fast flow rates and high throughput. Supplied as plain, white, nongridded discs in a nonsterile, 100 per pack configuration.

Key Polyethersulfone (PES) Membrane Characteristics

• Naturally hydrophilic: wets out evenly without added wetting agents, eliminating a common source of analytical interference.
• Low protein and drug binding: the uniform pore structure maximizes recovery of critical proteins and drugs.
• Low extractables: minimizes the risk of compromising test results with leached materials.
• Acid and base resistant: the high-temperature PES polymer offers broad chemical compatibility for diverse sample matrices.
• Strong and durable: the microporous asymmetric film withstands aggressive handling and automated equipment, and tolerates temperatures up to 135 degrees C.

Key Construction Characteristics

• Pore size: 0.22um for fine particulate and bacterial removal.
• Diameter: 47mm disc format.
• Surface: plain, white, nongridded.
• Sterility: nonsterile.
• Pack: 100 discs per pack.

The uniform porosity and controlled pore size efficiently remove particulates during general filtration while maintaining sample integrity. Low protein binding and low extractables help preserve recovery of sensitive analytes, and the membrane's strength and chemical resistance provide consistent, reproducible performance across demanding laboratory workflows.

Color

White

Construction

Asymmetric microporous film

Diameter

47mm

Grade

Plain

Grid (Yes/No)

No

Material

Polyethersulfone (PES)

Maximum Operating Temperature (°C)

135

Membrane Color

White

Pack Count

100

Pore Size (µm)

0.22

Sterility

Nonsterile

Wettability

Hydrophilic

• Sterilizing Filtration The 0.22um pore size provides complete bacterial retention for protein, enzyme, and biological fluid filtration and sterilization.
• Pharmaceutical Sterilization Delivers reliable sterilizing-grade filtration of pharmaceutical solutions and intermediates.
• Tissue Culture Media Preparation Naturally hydrophilic PES filters media, buffers, and additives with fast flow and high throughput.
• Protein and Enzyme Filtration Low protein binding maximizes recovery of critical proteins and enzymes during processing.
• Environmental Water Studies Supports filtration of aqueous environmental samples for downstream analysis.
• Biological Fluid Filtration Removes particulates and microorganisms from biological fluids while preserving sample integrity.