Polyethersulfone (PES) Membrane Discs, 0.45um, 142mm, Nonsterile, 25/Pk
GVS SKU: 1214170

Featuring a strong, microporous asymmetric polyethersulfone (PES) membrane constructed from a high-temperature polymer, this 142mm disc delivers reliable particulate removal during general filtration at a 0.45um pore size. The naturally hydrophilic media wets out without added surfactants, while its low protein and drug binding characteristics maximize sample recovery. Supplied nonsterile with a plain surface in packs of 25.

Key Polyethersulfone (PES) Membrane Characteristics

• Naturally hydrophilic: wets spontaneously without added wetting agents that can interfere with downstream 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 extractables.
• Acid and base resistant: the high-temperature polyethersulfone polymer provides broad chemical compatibility.
• Strength and durability: withstands aggressive handling and automated equipment, and tolerates temperatures up to 135 degrees C.

Key Construction Characteristics

• Diameter: 142mm membrane disc format.
• Pore size: 0.45um for sample clarification and particulate removal.
• Surface: plain, nonsterile.
• Pack: 25 discs per pack.

The uniform pore structure supports fast flow rates and high throughputs, delivering reproducible results across a wide range of aqueous and life science fluids. Low binding and low extractables help preserve sample integrity, making the membrane well suited to applications where accurate, dependable recovery is required.

Diameter

142mm

Grade

Plain

Grid (Yes/No)

No

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 Removes particulates from aqueous solutions during general filtration with a 0.45um pore size.
• HPLC and GC Sample Prep Provides clean, particle-free filtrate that protects analytical instrumentation and columns.
• Protein and Enzyme Filtration Low protein and drug binding maximizes recovery of valuable biomolecules.
• Biological Fluid Filtration Naturally hydrophilic media filters serums and biological fluids without added wetting agents.
• Pharmaceutical Filtration Acid and base resistant polyethersulfone supports filtration of a broad range of pharmaceutical solutions.
• Environmental Water Studies Low extractables and reliable throughput suit environmental water sample preparation.