PTFE Mini-UniPrep Syringeless Filters, 0.2um, Translucent Housing, Slit Septum Cap, 1000/Pk
Whatman SKU: US503NPEORG

PTFE Syringeless Filters - US503NPEORG

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. PTFE suits solvent and reagent filtration where other membranes fail and stays chemically inert against solvents, acids, and alkalis. The polypropylene housing resists aqueous acids, bases, and alcohols while holding extractables low for sensitive analyses and sustains efficient flow on viscous samples. Cleaner, more uniform injections follow, giving the method the reproducibility that quantitative analysis depends on.

Technical Specifications

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

Housing Specifications

• Resists aqueous acids, bases, and alcohols in routine sample prep
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Optimized internal geometry minimizes backpressure in service
• Low extractable contribution protects sensitive downstream analyses

Protecting sample integrity from preparation through injection keeps your chromatographic results trustworthy. Consistent autosampler-ready components keep your chromatographic methods reproducible with reliable sealing and dimensional consistency. Send your autosampler model to our technical service team and request a vial and closure recommendation.

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

Material

Polytetrafluoroethylene (PTFE)

Pore Size (µm)

0.2

Sterility

Nonsterile

Wettability

Hydrophobic

• Aggressive Solvent Matrices - PTFE membrane withstands organic solvents, enabling reliable clarification of solvent-matched sample matrices.
• 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.
• Solubility Assay Filtration - Positive-pressure filtration cleanly clarifies small sample volumes, supporting accurate solubility determination.
• Pharmaceutical QC Testing - Content uniformity and dissolution samples are clarified in one step, reducing handling before chromatographic injection.
• HPLC Sample Prep - Plunger-driven filtration removes particulates from analytical samples, protecting columns from clogging and back pressure.