Glass Microfiber Mini-UniPrep Syringeless Filters, 0.45_m, Trans. Hsg, Slit Sept. Cap, 100/Pk
Whatman SKU: US203NPUGMF

Glass Fiber (GF) Syringeless Filters - US203NPUGMF

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. Glass fiber captures particulates throughout its depth for high loading capacity and offers broad chemical compatibility. The PP housing sustains efficient flow on viscous samples while holding a reliable seal against the membrane edge and contributes minimal extractables to the filtrate. For the analyst, that consistency means chromatographic results with less run-to-run variability traced back to sample preparation.

Technical Specifications

• Nominal depth retention with high dirt-loading capacity
• Naturally hydrophilic surface wets rapidly with aqueous samples
• Inorganic construction suits demanding sample-preparation chemistries
• Biologically inert borosilicate fiber with broad chemical compatibility
• Withstands high-temperature pre-conditioning up to 500°C

Housing Specifications

• Optimized internal geometry minimizes backpressure in service
• Thermal-bonded construction keeps adhesives out of the fluid path
• Medical-grade polypropylene with broad chemical compatibility
• Low extractable contribution protects sensitive downstream analyses

Holding a leak-free seal through every needle puncture keeps your injections clean from the first to the last. Dependable vial and closure performance protects your samples through every injection so evaporation and contamination stay out of your data. Ask the Tisch Scientific team about blanket-order pricing and documentation for your routine autosampler supplies.

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

Material

Glass Fiber (GF)

Pore Size (µm)

0.45

Sterility

Nonsterile

Wettability

Hydrophilic

• Direct Sample Filtration - Built-in membrane clarifies the sample in one manual step, cutting transfer steps before chromatographic injection.
• Pharmaceutical QC Testing - Content uniformity and dissolution samples are clarified in one step, reducing handling before chromatographic injection.
• Solubility Assay Filtration - Positive-pressure filtration cleanly clarifies small sample volumes, supporting accurate solubility determination.
• 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.
• Column Lifetime Extension - Consistent sub-micron particle removal before injection reduces column contamination and back pressure buildup.