wwPTFE Membrane Disc Filter - 0.45um, 47mm, 50/Pk SKU: 60548

Water-Wettable PTFE Membrane Filters - 60548

Engineered for high retention efficiency and superior chemical stability, the Pall 60548 achieves reliable separation results across a broad range of analytical and preparative applications. Dual-compatibility with aqueous and organic solvents allows a single membrane to process mixed-polarity sample sets without interruption for membrane changes. For this reason, consistent surface properties across the full membrane area support uniform particle capture and reliable results in gravimetric, microscopic, and culture-based analytical workflows.

Material Specifications

• Stable performance at operating temperatures reaching 55°C ensures the membrane handles heated applications without pore distortion or structural compromise.
• Packaged without sterilization for applications where downstream sterility is achieved by other means or is not a process requirement.
• Permanently modified hydrophilic surface maintains wettability throughout the membrane lifetime without surfactant additives that could leach into the filtrate.
• Broad solvent compatibility spans aggressive acids, bases, alcohols, and organic solvents that would degrade PES, nylon, and cellulose-based alternatives.
• Water-wettable PTFE combines the universal chemical resistance of polytetrafluoroethylene with a permanently hydrophilic surface that eliminates alcohol pre-wetting.

Microbial enumeration methods require complete retention at rated pore size and a growth-supporting surface. The membrane specifications above confirm both requirements for your culture-based workflows. For exactly this reason, the documented retention specifications of this device ensure that your filtrate meets the particulate cleanliness requirements of your downstream analytical or process step without additional verification. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

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

Bubble Point (psi)

9.1psi

Color

White

Diameter

47mm

Extractables

< 0.5% (Trace)

Filtration Area

17.35cm²

Flow Rate

15 mL/min/cm²

Grid (Yes/No)

No

Material

PTFE

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

55°C

Membrane Thickness (µm)

150 – 200µm

Pack Count

75

pH Range

1-14

Pore Size (µm)

0.45

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 15-20 min

Support Material

Polypropylene

Wettability

Hydrophilic

• Universal Filter Holders - Filters both aqueous and organic HPLC samples in reusable holders without the mess of pre-wetting steps.
• Chromatography Guard - Protects analytical columns by filtering samples in-line, preventing particulate buildup on the expensive column frit.
• Dissolution Calibration - Used to filter calibration standards in dissolution baths, ensuring drug recovery matches the test samples exactly.
• Multiphase Filtration - Processes emulsions and biphasic mixtures efficiently, allowing both the oil and water phases to pass through.
• Aggressive pH Filtering - Handles extreme pH solutions in environmental analysis, from acid mine drainage to caustic industrial wastewater.
• Field Water Sampling - Filters environmental water on-site, simplifying logistics by eliminating the need for methanol pre-wetting vials.