Dp PP Mini-UniPrep Syringeless Filters, 0.45um, Translucent Housing, Standard Cap, 1000/Pk
Whatman SKU: UN503NPUDPP

Polypropylene (PP) Syringeless Filters - UN503NPUDPP

Across UniPrep, Mini-UniPrep, and Autovial formats, syringeless filters integrate filtration into one disposable, so analysts clarify a sample without assembling and changing filters between runs. Polypropylene pairs hydrophobic behavior with broad chemical resistance and keeps binding low while capturing particulates through its depth. Polypropylene construction maintains a low-dead-volume internal flow path while holding extractables low for sensitive analyses and prevents sample bypass under rated operating pressure. Cleaner, more uniform injections follow, giving the method the reproducibility that quantitative analysis depends on.

Technical Specifications

• Low extractables protect sensitive downstream analyses
• Low binding with nominal depth retention and high dirt-loading capacity
• Sustains throughput on particulate-laden solvent samples
• Hydrophobic matrix suits solvent and non-aqueous sample streams
• High resistance to organic solvents, acids, and bases

Housing Specifications

• Optimized internal geometry minimizes backpressure in service
• Thermal-bonded construction keeps adhesives out of the fluid path
• Resists aqueous acids, bases, and alcohols in routine sample prep
• Low extractable contribution protects sensitive downstream analyses

Reproducible separations start with samples that reach the column free of particulates. Upstream sample clarification keeps your separations clean and reproducible across analytical and preparative chromatography methods. 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.

Construction

Polypropylene (PP)

Material

Polypropylene (PP)

Pore Size (µm)

0.45

Sterility

Nonsterile

Wettability

Hydrophobic

• UHPLC Prep Workflow - Integrated plunger and membrane filter sub-micron particles in one step, meeting stringent UHPLC injection purity requirements.
• 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.
• 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.