PTFE Mini-UniPrep Syringeless Filters, 0.45um, Amber Housing, Standard Cap, 100/Pk
Whatman SKU: UN203APUORG

PTFE Syringeless Filters - UN203APUORG

Syringeless filters consolidate the syringe-and-filter routine into one disposable assembly, reducing setup time and the multi-step handling that conventional filtration requires for each sample. PTFE delivers absolute particle cutoff at the rated pore size while staying chemically inert against solvents, acids, and alkalis and suits solvent filtration where other membranes fail. Polypropylene construction maintains housing integrity through the filtration run while contributing minimal extractables to the filtrate and stays inert across common laboratory solvents. 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
• Filters aggressive organic solvents without swelling or breakdown
• Low extractables keep the chromatographic background clean
• Absolute pore size rating gives consistent results across protocols
• Chemically inert against aggressive solvents, strong acids, and alkalis

Housing Specifications

• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Thermal-bonded construction keeps adhesives out of the fluid path
• Optimized internal geometry minimizes backpressure in service
• Medical-grade polypropylene with broad chemical compatibility

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

• Column Lifetime Extension - Consistent sub-micron particle removal before injection reduces column contamination and back pressure buildup.
• Aggressive Solvent Matrices - PTFE membrane withstands organic solvents, enabling reliable clarification of solvent-matched sample matrices.
• UHPLC Prep Workflow - Integrated plunger and membrane filter sub-micron particles in one step, meeting stringent UHPLC injection purity requirements.
• 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.
• Light-Sensitive Samples - Amber housing options shield photosensitive analytes from light during filtration for chromatographic preparation.