PES Membrane Filter Discs, 0.22um, 90mm, Hydrophilic, Nonsterile, 25/Pk
GVS SKU: 1214920

Featuring a strong, microporous asymmetric polyethersulfone (PES) medium, these 90mm membrane filter discs deliver dependable particulate removal across general and life science filtration. The naturally hydrophilic membrane carries a 0.22um pore size and a nominal thickness of 0.11 to 0.15mm, wetting spontaneously in aqueous solutions without added wetting agents that could interfere with sensitive analyses. Supplied nonsterile in packs of 25, the plain-surface discs combine fast flow and high throughput with low protein and drug binding for clean, reproducible results.

Key PES Membrane Characteristics

• Naturally hydrophilic: wets spontaneously in water and aqueous solutions without surfactant wetting agents that can interfere with analyses.
• Low protein and drug binding: a uniform pore structure maximizes recovery of critical drugs and proteins.
• Low extractables: minimizes the risk of test results being compromised by leachable material.
• Acid and base resistant: the high-temperature polyethersulfone polymer offers broad chemical compatibility and withstands temperatures up to 135C.
• Strong and durable: the microporous asymmetric film tolerates aggressive handling and automated equipment.

Key Construction Characteristics

• Material: polyethersulfone (PES) membrane.
• Format: 90mm plain-surface filter disc.
• Pore size: 0.22um.
• Nominal thickness: 0.11 to 0.15mm.
• Sterility and pack: nonsterile, 25 discs per pack.

The uniform porosity and controlled pore size provide reliable flow rates and consistent particle retention from lot to lot. With low binding and low extractable levels, the membrane helps preserve sample integrity during demanding filtration. These discs deliver reproducible performance for clarification, sterilization, and protein or enzyme filtration workflows.

Color

White

Diameter

90mm

Grid (Yes/No)

No

Material

Polyethersulfone (PES)

Maximum Operating Temperature (°C)

135

Membrane Brand

GVS PES

Membrane Color

White

Membrane Thickness (µm)

110-150

Pack Count

25

Pore Size (µm)

0.22

Sterility

Nonsterile

Wettability

Hydrophilic

• Sterilizing Filtration The 0.22um PES membrane provides complete bacterial retention for sterile filtration of heat-sensitive solutions.
• Protein and Enzyme Filtration Low protein and drug binding maximizes recovery during filtration of proteins, enzymes, and biological fluids.
• Pharmaceutical Filtration Low extractables and broad chemical compatibility suit sterilization of pharmaceutical solutions and intermediates.
• Cell Culture Media Preparation The hydrophilic membrane sterilizes buffers and culture media without wetting agents that could affect downstream assays.
• Microbiological Analysis Reliable 0.22um retention supports microbiology and sample sterilization workflows.
• Environmental Water Studies The chemically resistant membrane clarifies and sterilizes aqueous environmental samples.