PES Membrane Disc Filters, 0.45um, 90mm, Hydrophilic, Nonsterile, 25/Pk
GVS SKU: 1215368

Featuring a naturally hydrophilic polyethersulfone (PES) membrane cast from pure polyethersulfone polymer, these 90mm disc filters deliver dependable particulate removal and sample clarification at a 0.45um pore size. The strong, microporous asymmetric film wets out spontaneously without added wetting agents, so analyses are not compromised by extractables, and its low protein and drug binding maximizes recovery of critical samples. Supplied nonsterile in packs of 25.

Key Polyethersulfone (PES) Membrane Characteristics

• Naturally hydrophilic: wets out evenly without surfactants or wetting agents that can interfere with downstream analyses.
• Low protein and drug binding: the uniform asymmetric pore structure maximizes recovery of proteins, drugs, and other critical analytes.
• Low extractables: minimizes the risk of contaminating filtrates, supporting clean, reproducible results.
• Broad chemical compatibility: the high-temperature polymer is acid and base resistant for aggressive aqueous and many non-aqueous solutions.
• High strength and durability: withstands aggressive handling and automated equipment while resisting cracking and tearing.

Key Construction Characteristics

• Material: hydrophilic polyethersulfone (PES) membrane.
• Pore size: 0.45um, suited to particulate removal and clarification rather than sterilization.
• Diameter: 90mm disc format for high-area filtration setups.
• Temperature rating: withstands temperatures up to 135 degrees C.
• Packaging: nonsterile, 25 discs per pack.

These discs provide reliable, fast flow rates and high throughput across a wide range of aqueous filtration tasks. The low-binding, low-extractable membrane helps preserve sample integrity, delivering consistent and reproducible filtration performance for general laboratory and life science work.

Color

White

Construction

Asymmetric microporous film

Diameter

90mm

Material

Polyethersulfone (PES)

Maximum Operating Temperature (°C)

135

Membrane Color

White

Pack Count

25

Pore Size (µm)

0.45

Sterility

Nonsterile

Wettability

Hydrophilic

• Sample Clarification The 0.45um hydrophilic PES membrane removes particulates from buffers, media, and reagents to produce clear, analysis-ready filtrates.
• HPLC and GC Sample Prep Low-extractable, low-binding PES protects instrumentation and improves data quality during mobile phase and sample preparation.
• Particulate Removal The microporous membrane efficiently captures fine particulates from aqueous solutions during general filtration.
• Protein and Enzyme Recovery Low protein and drug binding maximizes recovery of critical biological analytes during filtration.
• Environmental Water Studies Broad chemical compatibility supports clarification and prep of environmental aqueous samples.
• Cell Culture Media Filtration Naturally hydrophilic wetting and high throughput suit clarification of tissue culture media and biological fluids.