PVDF Mini-UniPrep Syringeless Filters, 0.45um, Translucent Housing, Standard Cap, 100/Pk
Whatman SKU: UN203NPUAQU

PVDF Syringeless Filters - UN203NPUAQU

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. Ultra-low-binding PVDF preserves dilute proteins and analytes in the filtrate and clarifies samples at the rated pore size. Polypropylene construction resists chemical degradation from routine sample matrices while sustaining efficient flow on viscous samples and maintains housing integrity through the filtration run. Where high-throughput HPLC and UHPLC demand consistent injections, that uniformity keeps method performance predictable.

Technical Specifications

• Ultra-low protein binding preserves dilute analytes for maximum recovery
• Resists HPLC mobile phases, alcohols, and mild hydrocarbons
• Low extractables preserve a clean chromatographic baseline
• Thin membrane structure sustains high flow for fast sample throughput
• Absolute pore size rating gives consistent results across protocols

Housing Specifications

• Resists aqueous acids, bases, and alcohols in routine sample prep
• Medical-grade polypropylene with broad chemical compatibility
• Reliable housing-to-membrane seal prevents bypass at rated pressure
• Thermal-bonded construction keeps adhesives out of the fluid path

Upstream clarification pays for itself by keeping your columns clear and your analytical day on schedule. Upstream sample clarification keeps your separations clean and reproducible from sample preparation through final injection. Send your autosampler model to our technical service team and request a vial and closure recommendation.

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

Material

Polyvinylidene Fluoride (PVDF)

Pore Size (µm)

0.45

Sterility

Nonsterile

Wettability

Hydrophilic

• Protein Precipitation Cleanup - Low protein binding retains analyte integrity when filtering precipitated sample supernatants.
• Solubility Assay Filtration - Positive-pressure filtration cleanly clarifies small sample volumes, supporting accurate solubility determination.
• Pharmaceutical QC Testing - Content uniformity and dissolution samples are clarified in one step, reducing handling before chromatographic injection.
• HPLC Sample Prep - Plunger-driven filtration removes particulates from analytical samples, protecting columns from clogging and back pressure.
• 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.