Nylon Mini-UniPrep Syringeless Filters, 0.45um, Translucent Housing, Slit Septum Cap, 100/Pk
Whatman SKU: US203NPUNYL

Nylon Syringeless Filters - US203NPUNYL

For analysts clearing high sample volumes, syringeless filters combine the membrane and prefilter into one disposable format, shortening setup and keeping the prep workflow uninterrupted. The nylon membrane draws aqueous buffers through without pre-wetting and holds dimensional stability under rated backpressure. The PP housing keeps the fluid path low in extractable contamination while resisting aqueous acids, bases, and alcohols and holds a reliable seal against the membrane edge. Where high-throughput HPLC and UHPLC demand consistent injections, that uniformity keeps method performance predictable.

Technical Specifications

• Absolute pore size rating provides consistent results across filtration protocols
• Stable across the pH 3 to 12 operating range
• Naturally hydrophilic surface wets without pre-wetting in aqueous applications
• Broad compatibility with alcohols, aliphatic, and aromatic solvents
• Low extractable contribution to sensitive analytical preparations

Housing Specifications

• Medical-grade polypropylene with broad chemical compatibility
• Low extractable contribution protects sensitive downstream analyses
• Resists aqueous acids, bases, and alcohols in routine sample prep
• Thermal-bonded construction keeps adhesives out of the fluid path

Consistent closures and low-extractable components keep your baselines clean across long autosampler queues. Dependable vial and closure performance protects your samples through every injection from sample preparation through the final run in the queue. Start a live chat with our customer support technicians to confirm closure and septa compatibility for your method.

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

Material

Nylon

Pore Size (µm)

0.45

Sterility

Nonsterile

Wettability

Hydrophilic

• High-Throughput Prep - Disposable single-unit format speeds batch sample preparation by eliminating syringe assembly and cleanup between samples.
• Pharmaceutical QC Testing - Content uniformity and dissolution samples are clarified in one step, reducing handling before chromatographic injection.
• Aqueous Biological Matrices - Nylon membrane filters aqueous and mixed-solvent samples without pre-wetting, maintaining flow for routine prep.
• Direct Sample Filtration - Built-in membrane clarifies the sample in one manual step, cutting transfer steps before chromatographic injection.
• Column Lifetime Extension - Consistent sub-micron particle removal before injection reduces column contamination and back pressure buildup.
• UHPLC Prep Workflow - Integrated plunger and membrane filter sub-micron particles in one step, meeting stringent UHPLC injection purity requirements.