PTFE Syringe Filter, Hydrophobic, 0.22 µm, 4mm, Luer-Lok, Nonsterile, 200/Pk
LabExact SKU: LE-IWT-ES-10603

LabExact PTFE Syringe Filters, 0.22 µm, 4 mm, 200/Pk - LE-IWT-ES-10603

A syringe filter with a hydrophobic vent-rated membrane keeps gas and vent lines free of microbial ingress. PTFE suits solvent and reagent filtration where other membranes fail and provides bacterial retention in gas and vent streams. Polypropylene construction resists chemical degradation from routine sample matrices and preserves sample chemistry across the flow path. Downstream equipment and work areas stay protected from airborne bacterial contamination once the vent path runs through the membrane.

Membrane Characteristics

• Membrane integrity holds across repeated autoclave sterilization cycles at 121°C to 134°C
• Hydrofluoric acid resistance holds even in fully acid-digested samples
• Low non-specific protein binding preserves recovery of biomolecules and therapeutic proteins during filtration
• High membrane porosity, 70 to 80 percent void volume, delivers high flow at low pressure
• Low extractables keep the chromatographic background clean

Housing Characteristics

• Medical-grade polypropylene with broad chemical compatibility
• Housing rated for reliable filtration under syringe-applied backpressure at its maximum operating pressure
• The seal formed against the membrane blocks bypass at rated operating pressure
• Low moisture absorption keeps the housing dimensionally stable through humid storage and shipping

A filter that softens or swells in your solvent fails you mid-run, batch after batch. Solvent-stream filtration handles the solvents and reagents your methods rely on from initial prep through final use. Reach out to the Tisch Scientific team about minimum order quantities and shipping timelines for 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.

Ahlstrom Equivalent

760546

Diameter

4mm

Material

Polytetrafluoroethylene (PTFE)

Pack Count

200

Pore Size (µm)

0.22

Sartorius Equivalent

17844----------Q

Sterility

Nonsterile

Weight

0.55

Wettability

Hydrophobic

Whatman Equivalent

6784-0402

• Dye and Pigment Analysis - Clarifies dye solutions in DMF, NMP, and other aggressive organics ahead of spectrophotometric color strength testing.
• Toxicology Screening - Clarifies protein-precipitated serum, plasma, and urine extracts ahead of LC-MS or GC-MS drug screening analysis.
• Pump Protection - Acts as a hydrophobic barrier that protects vacuum pumps from corrosive moisture and particulate damage.
• Extractables Testing - Clarifies packaging material organic solvent extracts ahead of LC-MS analysis, keeping background low for leachable detection.
• Polymer GPC Prep - Clarifies polymer solutions in THF ahead of gel permeation chromatography, protecting columns from particulates.
• Battery Electrolyte Prep - Clarifies lithium-ion battery electrolyte in carbonate solvents ahead of GC-MS purity and impurity analysis.