PES Syringe Filter w/ Glass Fiber Prefilter, Nonsterile, 0.22µm, 25mm, Luer-Lok, 100/Pk
LabExact SKU: LE-IWT-ES10208

LabExact Polyethersulfone (PES) Syringe Filters, 0.22 µm, 25 mm, 100/Pk - LE-IWT-ES10208

At the sub-micron pore rating, a syringe filter delivers sterilizing-grade retention at the point of use. Low-binding PES achieves sterile-grade retention with high recovery while tolerating aliphatic alcohols, glycols, and aqueous buffers and pairs fast flow with reduced protein adsorption. The polypropylene housing resists aqueous acids, bases, and alcohols in routine use and sheds virtually no extractable material into the sample. 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.

Prefiltration

• Added glass fiber stage extends usable throughput by delaying membrane clogging
• Two-stage construction pairs a borosilicate glass fiber prefilter with the downstream membrane
• High dirt-holding capacity suits very turbid, high-solids sample loads
• Glass fiber prefilter stage sustains flow through particle-laden, hard-to-filter samples

Membrane Characteristics

• Ionic extractables from the membrane stay very low
• Inherent hydrophilicity allows instant aqueous wetting with no pre-wetting step
• Sulfone backbone's hydrolytic stability tolerates repeated autoclave steam sterilization cycles
• Aromatic sulfone backbone underlies stability across the full pH range
• Antibody and protein samples pass through PES with minimal adsorptive loss

Housing Characteristics

• Low moisture absorption keeps the housing dimensionally stable through humid storage and shipping
• Translucent housing wall allows visual confirmation of sample flow during filtration
• Standardized luer connection geometry provides secure engagement with standard syringe tips
• Rated operating pressure supports filtration of high-resistance and viscous samples without housing distortion

Particulates in your buffers and mobile phases shorten column life and unsettle your baselines. Upstream buffer clarification keeps your run from stalling on particulates that slipped through across routine and validated analytical methods. Start a live chat with the Tisch Scientific team about packaging, unit count, and ship-date for your filtration order.

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

SF120E

Material

Polyethersulfone (PES)

Pack Count

100

Pore Size (µm)

0.22

Sterility

Nonsterile

Weight

0.168

Wettability

Hydrophilic

Whatman Equivalent

6876-2502

• Media Preparation - Facilitates rapid sterilization of tissue culture additives, lowering contamination risk during sensitive laboratory work.
• PFAS Water Testing - PES filters process aqueous samples for EPA Method 1633A PFAS testing without added fluorinated background.
• Biological Assays - Protects sensitive enzymatic and antibody-based assays from particulate interference without adsorbing critical reagents.
• Cell Culture - Reduces the risk of mycoplasma contamination in growth media, supporting healthier cell lines and more reliable experimental outcomes.
• Organic Carbon Testing - Clarifies water samples ahead of DOC and UV254 analysis while keeping organic carbon adsorption to the membrane minimal.
• Pesticide Residue Testing - PES membranes improve polar pesticide recovery in food-safety LC-MS/MS testing versus hydrogen-bonding nylon.