PES Syringe Filter, Hydrophilic, 0.22µm, 4mm, Luer-Lok, Nonsterile, 200/Pack
LabExact SKU: LE-IWT-ES-10609

LabExact Polyethersulfone (PES) Syringe Filters, 0.22 µm, 4 mm, 200/Pk - LE-IWT-ES-10609

Sterilizing-grade syringe filters deliver sterile-grade retention as a single-use format, eliminating the autoclaving and cleaning cycle a reusable sterile filtration setup would require. PES admits aqueous reagents on contact, skipping any surfactant rinse while leaving proteins less surface area to contact and reaches sterile-grade performance while protecting analyte yield. The polypropylene housing preserves sample chemistry across the flow path while standing firm against aqueous acids, bases, and alcohols during regular handling and presses snugly against the membrane during the pass. When sample preparation calls for a sterile filtrate at the point of injection, sterilizing-grade absolute retention delivers it directly, protecting the analytical method from microbial interference.

Membrane Characteristics

• Absolute pore size rating holds consistent across every lot
• DNA and RNA pass through with negligible adsorptive loss
• Pore structure integrity holds through autoclave cycles up to 126°C
• Mechanical strength keeps the matrix intact under vacuum or pressure
• PFAS extractables test non-detectable under EPA Method 537.1

Housing Characteristics

• Stable across the full aqueous pH range in routine sample work
• Housing rated for reliable filtration under syringe-applied backpressure at its maximum operating pressure
• Plasticizer-free polyolefin construction keeps the fluid path clean
• Inert polyolefin wall contributes minimal sample adsorption to the filtrate

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. Contact Tisch Scientific for a quote, lead time, or stock-on-hand check on your filtration product selection.

Sterilization Guidance

Standard autoclave cycles at 121°C for 30 minutes prepare the device for sterile workflows.

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

Diameter

4mm

Material

Polyethersulfone (PES)

Pack Count

200

Pore Size (µm)

0.22

Sterility

Nonsterile

Weight

0.55

Wettability

Hydrophilic

• PFAS Water Testing - PES filters process aqueous samples for EPA Method 1633A PFAS testing without added fluorinated background.
• Organic Carbon Testing - Clarifies water samples ahead of DOC and UV254 analysis while keeping organic carbon adsorption to the membrane minimal.
• Biological Assays - Protects sensitive enzymatic and antibody-based assays from particulate interference without adsorbing critical reagents.
• Media Preparation - Facilitates rapid sterilization of tissue culture additives, lowering contamination risk during sensitive laboratory work.
• Nucleic Acid Recovery - Processes DNA and RNA extracts with minimal nucleic acid adsorption, preserving yield on the hydrophilic PES surface.
• Urine Drug Screening - Clarifies protein-poor urine samples for dilute-and-shoot LC-MS/MS toxicology testing without adsorbing target drug analytes.