Nylon Mini-UniPrep Syringeless Filters, 0.45um, Translucent Housing, Standard Cap, 100/Pk
Whatman SKU: UN203NPUNYL

Nylon Syringeless Filters - UN203NPUNYL

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 while staying stable across the pH 3 to 12 buffer range and resists particle shedding through extended cycles. Polypropylene construction holds extractable contribution low for sensitive analyses and routes flow to minimize backpressure in service. Standardized this way, sample preparation becomes one of the most controlled and repeatable steps in the analytical workflow.

Technical Specifications

• Absolute pore size rating provides consistent results across filtration protocols
• Low extractable contribution to sensitive analytical preparations
• Stable across the pH 3 to 12 operating range
• Broad compatibility with alcohols, aliphatic, and aromatic solvents
• High tensile strength for stability under elevated differential pressures

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
• Low extractable contribution protects sensitive downstream analyses

Upstream clarification pays for itself by keeping your columns clear and your analytical day on schedule. Pre-injection filtration protects the resolution your methods depend on by clearing particulates ahead of the column and frits. 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

• Pharmaceutical QC Testing - Content uniformity and dissolution samples are clarified in one step, reducing handling before chromatographic injection.
• High-Throughput Prep - Disposable single-unit format speeds batch sample preparation by eliminating syringe assembly and cleanup between samples.
• 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.
• Light-Sensitive Samples - Amber housing options shield photosensitive analytes from light during filtration for chromatographic preparation.
• UHPLC Prep Workflow - Integrated plunger and membrane filter sub-micron particles in one step, meeting stringent UHPLC injection purity requirements.