PTFE Mini-UniPrep Syringeless Filters, 0.45um, Translucent Housing, Standard Cap, 100/Pk
Whatman SKU: UN203NPUORG

PTFE Syringeless Filters - UN203NPUORG

By removing the separate filter and syringe from sample preparation, syringeless filters reduce setup time and limit the particulate carryover that can raise autosampler backpressure and shorten column life. PTFE filters aggressive organic solvents without swelling or breakdown while resisting attack from the harshest process chemistries and holds consistent absolute retention at the rated pore size. Polypropylene construction maintains a low-dead-volume internal flow path while holding extractables low for sensitive analyses and resists aqueous acids, bases, and alcohols. Standardized this way, sample preparation becomes one of the most controlled and repeatable steps in the analytical workflow.

Technical Specifications

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

Housing Specifications

• Resists aqueous acids, bases, and alcohols in routine sample prep
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Thermal-bonded construction keeps adhesives out of the fluid path
• Low extractable contribution protects sensitive downstream analyses

Sealing each sample securely from preparation through injection keeps your chromatographic data trustworthy. Consistent autosampler-ready components keep your chromatographic methods reproducible across routine and regulated analytical workflows. Reach out to the Tisch Scientific team for volume pricing and technical support on your chromatography consumables.

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

Material

Polytetrafluoroethylene (PTFE)

Pore Size (µm)

0.45

Sterility

Nonsterile

Wettability

Hydrophobic

• Pharmaceutical QC Testing - Content uniformity and dissolution samples are clarified in one step, reducing handling before chromatographic injection.
• Solubility Assay Filtration - Positive-pressure filtration cleanly clarifies small sample volumes, supporting accurate solubility determination.
• HPLC Sample Prep - Plunger-driven filtration removes particulates from analytical samples, protecting columns from clogging and back pressure.
• UHPLC Prep Workflow - Integrated plunger and membrane filter sub-micron particles in one step, meeting stringent UHPLC injection purity requirements.
• High-Throughput Prep - Disposable single-unit format speeds batch sample preparation by eliminating syringe assembly and cleanup between samples.
• Direct Sample Filtration - Built-in membrane clarifies the sample in one manual step, cutting transfer steps before chromatographic injection.