PES Syringe Filter, Nonsterile, 0.22µm, 30mm, Hydrophilic, Luer-Lock, HPLC/IC, 100/pk
LabExact SKU: LE-IWT-ES10312

LabExact Polyethersulfone (PES) Syringe Filters, 0.22 µm, 30 mm, 100/Pk - LE-IWT-ES10312

A sterilizing-grade syringe filter carries manufacturer bacterial retention testing built into the design, giving analysts documented sterile-grade performance without repeating that testing in-house for the format. PES's low binding comes from surface chemistry, not the base polymer while handling strong bases across a broad aqueous range and screens out bacteria before they cross its finest pore rating. The polypropylene housing presses snugly against the membrane during the pass while keeping sample purity intact through the filtration pass and resists degradation from routine sample matrices. Where bacterial contamination must stay out of the sample, manufacturer-tested retention keeps the instrument and downstream assay protected without a housing to maintain or clean.

Membrane Characteristics

• Antibody and protein samples pass through PES with minimal adsorptive loss
• Aromatic sulfone backbone underlies stability across the full pH range
• Pore structure integrity holds through autoclave cycles up to 126°C
• Mechanical strength keeps the matrix intact under vacuum or pressure
• Ionic extractables from the membrane stay very low

Housing Characteristics

• Standardized luer connection geometry provides secure engagement with standard syringe tips
• Housing tolerates elevated-temperature aqueous and solvent sample filtration up to about 80°C without softening
• Minimal ionic background from the polypropylene housing supports ion chromatography and trace-metal ICP-MS sample preparation
• Minimal intrinsic autofluorescence from the polypropylene housing supports background-sensitive fluorescence-based assay work downstream

Particulates that reach your column with the sample foul the frits and shorten its life. Pre-injection filtration protects the resolution your methods depend on so your retention times and peak shapes stay consistent. Request a quality certificate, lot documentation, or a blanket-order quote for your filtration order at any time.

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

30mm

Material

Polyethersulfone (PES)

Pack Count

100

Pore Size (µm)

0.22

Sterility

Nonsterile

Weight

0.168

Wettability

Hydrophilic

• PFAS Water Testing - PES filters process aqueous samples for EPA Method 1633A PFAS testing without added fluorinated background.
• Urine Drug Screening - Clarifies protein-poor urine samples for dilute-and-shoot LC-MS/MS toxicology testing without adsorbing target drug analytes.
• Cell Culture - Reduces the risk of mycoplasma contamination in growth media, supporting healthier cell lines and more reliable experimental outcomes.
• Sample Recovery - Minimizes sample loss in low-protein-binding applications, delivering high yield for precious or rare biological specimens.
• Pesticide Residue Testing - PES membranes improve polar pesticide recovery in food-safety LC-MS/MS testing versus hydrogen-bonding nylon.
• Biological Assays - Protects sensitive enzymatic and antibody-based assays from particulate interference without adsorbing critical reagents.