PTFE Mini-UniPrep Syringeless Filters, 0.2um, Translucent Housing, Slit Septum Cap, 100/Pk
Whatman SKU: US203NPEORG

PTFE Syringeless Filters - US203NPEORG

Across UniPrep, Mini-UniPrep, and Autovial formats, syringeless filters integrate filtration into one disposable, so analysts clarify a sample without assembling and changing filters between runs. The PTFE matrix handles concentrated acids and bases across demanding methods and stays chemically inert against solvents, acids, and alkalis. The polypropylene housing contributes minimal extractables to the filtrate and sustains efficient flow on viscous samples. Standardized this way, sample preparation becomes one of the most controlled and repeatable steps in the analytical workflow.

Technical Specifications

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

Housing Specifications

• Low extractable contribution protects sensitive downstream analyses
• Optimized internal geometry minimizes backpressure in service
• Medical-grade polypropylene with broad chemical compatibility
• Reliable housing-to-membrane seal prevents bypass at rated pressure

Protecting sample integrity from preparation through injection keeps your chromatographic results trustworthy. Dependable vial and closure performance protects your samples through every injection across HPLC, UPLC, and GC autosampler platforms. Ask our friendly customer service team to confirm the cap size, septa material, and thread your method requires.

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

Material

Polytetrafluoroethylene (PTFE)

Pore Size (µm)

0.2

Sterility

Nonsterile

Wettability

Hydrophobic

• 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.
• High-Throughput Prep - Disposable single-unit format speeds batch sample preparation by eliminating syringe assembly and cleanup between samples.
• Column Lifetime Extension - Consistent sub-micron particle removal before injection reduces column contamination and back pressure buildup.
• Light-Sensitive Samples - Amber housing options shield photosensitive analytes from light during filtration for chromatographic preparation.