PES Membrane Filters, 1.2um, 25mm, Nonsterile, 100/Pk
GVS SKU: 1222267

Featuring a strong, microporous asymmetric film cast from high-temperature polyethersulfone polymer, this 1.2um, 25mm membrane disc delivers naturally hydrophilic filtration without added wetting agents. The polymer construction resists acids and bases while contributing low extractables and low drug and protein binding, supporting maximum sample recovery during general particulate removal. Each pack contains 100 discs with a nominal membrane thickness of 0.11 to 0.15 mm.

Key Polyethersulfone Membrane Characteristics

• Naturally hydrophilic: wets out without added surfactants, eliminating wetting agents that can interfere with downstream analyses.
• Low extractables: minimizes the risk that effluent quality or test results are compromised by leached contaminants.
• Low drug and protein binding: maximizes recovery of critical drugs and proteins for life science work.
• Acid and base resistant: the high-temperature polyethersulfone polymer withstands aggressive handling and automated equipment.
• Asymmetric microporous structure: provides reliable particulate removal with dependable flow during general filtration.

Key Construction Characteristics

• Material: polyethersulfone (PES) membrane.
• Format: 25mm diameter disc, plain grade surface.
• Pore size: 1.2um for clarification and particulate removal.
• Membrane thickness: 0.11 to 0.15 mm.
• Sterility and pack: nonsterile, supplied 100 per pack.

This membrane disc maintains consistent flow rates and particle retention across lots for dependable, reproducible filtration. Its low-binding, low-extractables profile helps preserve sample integrity in pharmaceutical, environmental, and life science workflows. The durable polyethersulfone structure withstands aggressive handling and high-pressure use without compromising membrane integrity.

Diameter

25mm

Grade

Plain

Material

Polyethersulfone (PES)

Membrane Color

White

Membrane Thickness (µm)

110-150

Mesh Format

Disc

Pack Count

100

Pore Size (µm)

1.2

Sterility

Nonsterile

Wettability

Hydrophilic

• Sample Clarification Removes particulates from aqueous solutions and organic solvent mixtures during general filtration prior to analysis.
• HPLC and GC Sample Prep Clarifies samples and mobile phases to protect chromatographic instruments and improve reproducibility.
• Protein and Drug Recovery Low protein and drug binding maximizes recovery of critical analytes in life science work.
• Prefiltration The 1.2um rating handles higher particulate loads to protect finer downstream membranes.
• Environmental Water Studies Prepares environmental water samples by removing suspended particulates ahead of testing.
• Pharmaceutical and Biotechnology Filtration Acid and base resistance suits clarification of aggressive pharmaceutical and biological solutions.