PES Membrane Disc Filters, 0.45um, 25mm, Hydrophilic, Nonsterile, 100/Pk
GVS SKU: 1214532

Featuring a strong, microporous asymmetric polyethersulfone (PES) membrane cast from a high-temperature polymer, this 25mm disc delivers reliable 0.45um filtration for general clarification and particulate removal. The membrane is naturally hydrophilic, eliminating the need for added wetting agents that can interfere with sensitive analyses, and its low protein and drug binding characteristics make it well suited for life science work. With a plain surface and a nonsterile format, it provides fast flow rates and high throughput across a broad range of aqueous and organic solvent applications.

Key Polyethersulfone (PES) Membrane Characteristics

• Naturally hydrophilic: wets spontaneously without surfactants or wetting agents that could compromise results.
• Low protein and drug binding: a uniform pore structure maximizes recovery of critical drugs and proteins.
• Low extractables: inert membrane chemistry helps keep test results free of interfering contaminants.
• Acid and base resistant: the high-temperature PES polymer offers broad chemical compatibility and durable handling.
• High flow and throughput: the asymmetric structure supports fast, reproducible filtration of aqueous and organic samples.

Key Construction Characteristics

• Membrane material: polyethersulfone (PES), plain surface.
• Pore size: 0.45um.
• Diameter: 25mm.
• Sterility: nonsterile.
• Pack: 100 per pack.

This membrane disc withstands temperatures up to 135 degrees C and maintains its integrity under high pressure thanks to superior burst strength. Consistent pore structure and low extractables support dependable flow rates, particle retention, and sample integrity from lot to lot. The result is reproducible clarification and particulate removal for analytical, chemistry, and life science laboratories.

Diameter

25mm

Grade

Plain

Grid (Yes/No)

No

Material

Polyethersulfone (PES)

Maximum Operating Temperature (°C)

135

Membrane Brand

UltraSep

Membrane Color

White

Pack Count

100

Pore Size (µm)

0.45

Sterility

Nonsterile

Surface Charge

Neutral

Wettability

Hydrophilic

• Sample Clarification Removes particulates from aqueous and organic solvent solutions during general filtration prior to analysis.
• HPLC and Analytical Prep Clarifies samples and mobile phases to protect columns and instruments, with low extractables to avoid interference.
• Protein and Enzyme Filtration Low protein and drug binding maximizes recovery of critical biomolecules during processing.
• Biological Fluid Filtration Clarifies serums, tissue culture media, and other biological fluids in life science workflows.
• Environmental Water Studies Prepares and clarifies aqueous environmental samples for downstream testing.
• Pharmaceutical Processing Supports clarification of pharmaceutical intermediates and fine chemicals with broad chemical compatibility.