PES Syringe Filter, Nonsterile - 0.45µm, 25mm, Luer Lock, High Flow, 100/Pk
LabExact SKU: LE-IWT-ES10067

LabExact Polyethersulfone (PES) Syringe Filters, 0.45 µm, 25 mm, 100/Pk - LE-IWT-ES10067

Because each syringe filter is dedicated to one sample, a failed or contaminated filtration stays isolated to its own analyst's run and leaves the next analyst's queue clear. The PES membrane clarifies particulates at the rated pore size while handling strong bases across a broad aqueous range and keeps that modified surface active throughout use. Polyolefin construction sheds virtually no extractable material into the sample while pressing snugly against the membrane during the pass and sustains efficient flow on viscous samples. Where small-volume samples must reach the instrument clean, low hold-up volume keeps sample loss minimal while the instrument stays protected from particulate damage.

Membrane Characteristics

• DNA and RNA pass through with negligible adsorptive loss
• Inherent hydrophilicity allows instant aqueous wetting with no pre-wetting step
• Pore structure integrity holds through autoclave cycles up to 126°C
• Chemical breadth spans alcohols, glycols, and aqueous buffers
• Aromatic sulfone backbone underlies stability across the full pH range

Housing Characteristics

• Polypropylene housing withstands rated backpressure from dense sample matrices without deformation
• Polypropylene density near 0.90 g/cm3 keeps housing weight low relative to denser engineering plastics
• Standardized luer connection geometry provides secure engagement with standard syringe tips
• Minimal intrinsic autofluorescence from the polypropylene housing supports background-sensitive fluorescence-based assay work downstream

A particulate-laden aqueous sample makes the rest of your preparation unpredictable. General-purpose aqueous filtration supports the sample types you handle every day across your water-analysis and general analytical workflows. Request blanket-order pricing and paperwork support for your routine filtration purchases.

Sterilization Guidance

Customer autoclave compatibility at 121°C accommodates in-lab sterilization timing.

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

Diameter

25mm

Environmental Express Equivalent

SF045E

Material

Polyethersulfone (PES)

Pack Count

100

Pall Equivalent

4508

Pore Size (µm)

0.45

Sterility

Nonsterile

Weight

0.168

Wettability

Hydrophilic

Whatman Equivalent

6781-2504

• PFAS Water Testing - PES filters process aqueous samples for EPA Method 1633A PFAS testing without added fluorinated background.
• Pesticide Residue Testing - PES membranes improve polar pesticide recovery in food-safety LC-MS/MS testing versus hydrogen-bonding nylon.
• Life Science Prep - Speeds processing of viscous biological solutions, improving laboratory workflow efficiency during busy sample prep days.
• Sample Recovery - Minimizes sample loss in low-protein-binding applications, delivering high yield for precious or rare biological specimens.
• Urine Drug Screening - Clarifies protein-poor urine samples for dilute-and-shoot LC-MS/MS toxicology testing without adsorbing target drug analytes.
• Nucleic Acid Recovery - Processes DNA and RNA extracts with minimal nucleic acid adsorption, preserving yield on the hydrophilic PES surface.