Nylon Mini-UniPrep Syringeless Filters, 0.45um, Translucent Housing, Standard Cap, 1000/Pk
Whatman SKU: UN503NPUNYL

Nylon Syringeless Filters - UN503NPUNYL

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. Nylon delivers sharp particle cutoff at the rated pore size and withstands elevated differential pressures. Polypropylene construction holds extractable contribution low for sensitive analyses while preventing sample bypass under rated operating pressure and maintains a low-dead-volume internal flow path. Cleaner, more uniform injections follow, giving the method the reproducibility that quantitative analysis depends on.

Technical Specifications

• Broad compatibility with alcohols, aliphatic, and aromatic solvents
• Absolute pore size rating provides consistent results across filtration protocols
• Low extractable contribution to sensitive analytical preparations
• High tensile strength for stability under elevated differential pressures
• Alkaline-resistant across a broad range of aqueous buffers

Housing Specifications

• Optimized internal geometry minimizes backpressure in service
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Resists aqueous acids, bases, and alcohols in routine sample prep
• Thermal-bonded construction keeps adhesives out of the fluid path

Sealing each sample securely from preparation through injection keeps your chromatographic data trustworthy. Consistent autosampler-ready components keep your chromatographic methods reproducible so injection-to-injection variability stays low. Connect with our customer support technicians to standardize vials, caps, and septa across your chromatography workflows.

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

Material

Nylon

Pore Size (µm)

0.45

Sterility

Nonsterile

Wettability

Hydrophilic

• 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.
• Solubility Assay Filtration - Positive-pressure filtration cleanly clarifies small sample volumes, supporting accurate solubility determination.
• Aqueous Biological Matrices - Nylon membrane filters aqueous and mixed-solvent samples without pre-wetting, maintaining flow for routine prep.
• Pharmaceutical QC Testing - Content uniformity and dissolution samples are clarified in one step, reducing handling before chromatographic injection.
• UHPLC Prep Workflow - Integrated plunger and membrane filter sub-micron particles in one step, meeting stringent UHPLC injection purity requirements.