PES Membrane Disc Filters, 0.22um, 142mm, Nonsterile, 25/Pk
GVS SKU: 1214169

Featuring a strong, microporous asymmetric polyethersulfone (PES) film, this 142mm membrane disc delivers reliable 0.22um filtration for general and life science applications. Constructed from a high-temperature polyethersulfone polymer that resists acids and bases, the membrane is naturally hydrophilic and requires no added wetting agents that could interfere with analyses. The plain surface and uniform pore structure support fast flow rates and high throughputs, while the membrane thickness of 0.11 to 0.15mm provides dependable handling strength. Each pack contains 25 nonsterile membrane discs.

Key PES Membrane Characteristics

• Naturally hydrophilic: wets spontaneously without added wetting agents that could otherwise interfere with downstream analyses.
• Low protein and drug binding: the uniform pore structure maximizes recovery of critical drugs and proteins.
• Acid and base resistant: the high-temperature polyethersulfone polymer withstands aggressive handling and automated equipment.
• Low extractables: minimizes the risk of compromising test results with leached contaminants.
• Withstands temperatures up to 135 degrees C: supports demanding filtration and processing conditions.

Key Construction Characteristics

• Membrane material: polyethersulfone (PES) with a plain surface.
• Pore size: 0.22um for fine particulate removal and clarification.
• Diameter: 142mm disc format.
• Membrane thickness: 0.11 to 0.15mm.
• Packaging: 25 nonsterile discs per pack.

The asymmetric PES structure maintains consistent flow and reproducible separation across a wide range of aqueous and organic media. Its low-binding character preserves sample integrity, protecting valuable proteins and drug compounds during recovery. Reliable lot-to-lot consistency supports dependable results in routine and critical filtration workflows.

Color

White

Diameter

142mm

Grade

UltraSep

Material

Polyethersulfone (PES)

Maximum Operating Temperature (°C)

135

Membrane Thickness (µm)

0.11 - 0.15 mm

Pack Count

25

Pore Size (µm)

0.22

Sterility

Nonsterile

Wettability

Hydrophilic

• Sterilizing-Grade Filtration The 0.22um pore size supports sterilizing filtration of biological fluids, tissue culture media, and pharmaceutical solutions.
• Protein and Enzyme Filtration Low protein and drug binding maximizes recovery during protein and enzyme filtration and sterilization.
• Pharmaceutical Processing The acid- and base-resistant membrane suits pharmaceutical sterilization and clarification at scale.
• Environmental Water Studies The 142mm format handles larger sample volumes for environmental water analysis.
• General Particulate Removal The microporous PES film efficiently removes particulates from solutions during general filtration.
• Life Science Sample Preparation Low extractables and naturally hydrophilic wetting preserve sample integrity for sensitive analyses.