PES Membrane Filter, 1.0um, 25mm, Nonsterile, 200 Pk SKU: SF18094

Polyethersulfone (PES) Membrane Filters - SF18094

Designed to deliver reproducibility and confidence across critical sample types, the Tisch SF18094 provides the filtration consistency that method validation demands. From a technical standpoint, a uniform Polyethersulfone (PES) matrix maintains its rated 1.0 cutoff under the pressures and flow conditions encountered during routine laboratory filtration. As a result, controlled production conditions produce membranes with documented pore size distribution and thickness tolerances, supporting method reproducibility across multiple filter lots.

Material Specifications

• Rigorous quality controls validate retention at rated pore sizes, positioning PES for critical pharmaceutical and biotechnology filtration.
• Polyethersulfone (PES) membranes deliver high flow rates with ultra-low protein binding, making them the preferred choice for biological sample filtration.
• Minimal background interference from extractables ensures PES membranes protect the integrity of sensitive biological preparations during filtration.
• Stable performance at operating temperatures reaching 60°C ensures the membrane handles heated applications without pore distortion or structural compromise.
• Naturally hydrophilic, PES membranes require no pre-wetting and offer broad compatibility with aqueous buffers, alcohols, and mild organic solvents.

Reproducible particle counting starts with a membrane surface that captures particles uniformly. The pore consistency documented above ensures your counts reflect the sample, not filter variation. To that end, asymmetric pore architecture places larger pores upstream and tighter pores downstream, giving you higher flow rates and greater dirt-holding capacity than symmetric membranes at equivalent retention ratings. Take control of your sample preparation variables and ensure that your data reflects the true nature of your work, rather than the quality of your consumables.

For more information about chemical compatibility, please review our Chemical Compatibility Chart.

Bubble Point (psi)

≥8.7 psi (water, 25°C)

Color

White

Diameter

25mm

Extractables

Low

Filtration Area

4.91cm²

Flow Rate

≥144 mL/min/cm²

Grid (Yes/No)

No

Material

Polyethersulfone (PES)

Maximum Operating Temperature (°C)

60°C

Membrane Thickness (µm)

100-120um

Pack Count

100

pH Range

1-14pH

Pore Size (µm)

1

Sterility

Nonsterile

Sterilization

Autoclave, EtO, Gamma Irradiation

Weight

0.07

Wettability

Hydrophilic

• Tissue Culture Support - Acts as a porous growth support for 3D tissue culture inserts, allowing nutrient diffusion while anchoring the cells.
• TFF Cassette Production - Used as the core membrane in flat-sheet tangential flow filtration devices for protein concentration and diafiltration.
• Enzyme Recovery - Ensures minimal yield loss during the filtration of dilute enzyme solutions due to its inherently low-binding surface.
• Buffer Batching - Clarifies large batches of biological buffers in production, protecting downstream chromatography columns from fouling.
• Bioreactor Sampling - Integrated into sampling ports to allow fluid withdrawal from bioreactors without compromising the vessel environment.
• Large Volume Processing - Filters liters of culture media in vacuum filter units, offering the fastest flow rates for routine lab preparations.