PTFE Mini-UniPrep Syringeless Filters, 0.2um, Translucent Housing, Standard Cap, 100/Pk
Whatman SKU: UN203NPEORG

PTFE Syringeless Filters - UN203NPEORG

A single syringeless device replaces the separate syringe, filter, and transfer vial, cutting both setup time and the handling steps where analyte is lost or contaminated. PTFE filters aggressive organic solvents without swelling or breakdown and resists attack from the harshest process chemistries. Polypropylene construction maintains a low-dead-volume internal flow path while holding extractables low for sensitive analyses and stays inert across common laboratory solvents. Where high-throughput HPLC and UHPLC demand consistent injections, that uniformity keeps method performance predictable.

Technical Specifications

• Absolute pore size rating gives consistent results across protocols
• Filters aggressive organic solvents without swelling or breakdown
• Stable across a wide operating temperature range for demanding methods
• Low extractables keep the chromatographic background clean
• Chemically inert against aggressive solvents, strong acids, and alkalis

Housing Specifications

• Medical-grade polypropylene with broad chemical compatibility
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Resists aqueous acids, bases, and alcohols in routine sample prep
• Optimized internal geometry minimizes backpressure in service

Reliable seals and consistent vials keep your autosampler runs clean from the first injection to the last. Dependable vial and closure performance protects your samples through every injection from sample preparation through the final run in the queue. Connect with our customer support technicians to standardize vials, caps, and septa across your chromatography workflows.

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

Material

Polytetrafluoroethylene (PTFE)

Pore Size (µm)

0.2

Sterility

Nonsterile

Wettability

Hydrophobic

• Direct Sample Filtration - Built-in membrane clarifies the sample in one manual step, cutting transfer steps before chromatographic injection.
• Solubility Assay Filtration - Positive-pressure filtration cleanly clarifies small sample volumes, supporting accurate solubility determination.
• Aggressive Solvent Matrices - PTFE membrane withstands organic solvents, enabling reliable clarification of solvent-matched sample matrices.
• HPLC Sample Prep - Plunger-driven filtration removes particulates from analytical samples, protecting columns from clogging and back pressure.
• Light-Sensitive Samples - Amber housing options shield photosensitive analytes from light during filtration for chromatographic preparation.
• Column Lifetime Extension - Consistent sub-micron particle removal before injection reduces column contamination and back pressure buildup.