Pall
wwPTFE Membrane Disc Filter - 0.2um, 47mm, 50/Pk SKU: 60539

Water-Wettable PTFE Membrane Filters - 60539

Precision-manufactured Hydrophilic membrane with a verified 0.2 pore structure delivers consistent retention performance across demanding laboratory filtration workflows. Optimized for laboratory use, permanently hydrophilic surface modification renders the PTFE membrane wettable by aqueous solutions on contact, eliminating the alcohol pre-wetting step required by standard PTFE. Taken together, precision manufacturing ensures that each membrane disc delivers the rated retention, flow rate, and surface consistency that analytical and microbiological methods require.

Material Specifications

• Near-zero extractable levels protect analytical sensitivity in HPLC sample preparation and trace-level chemical analysis where background interference is critical.
• Combines the thermal and chemical inertness of PTFE with the aqueous wettability needed for direct filtration of biological buffers and culture media.
• Filters both aqueous and organic samples interchangeably without membrane changes, simplifying workflows that process mixed-polarity sample sets.
• Water-wettable PTFE combines the universal chemical resistance of polytetrafluoroethylene with a permanently hydrophilic surface that eliminates alcohol pre-wetting.
• Stable performance at operating temperatures reaching 55°C ensures the membrane handles heated applications without pore distortion or structural compromise.

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. Consistent manufacturing means the filtration performance you observe during initial evaluation repeats on every subsequent unit, supporting the reproducibility your quality system requires. Elevate the quality of your analytical data today by standardizing on a filtration product built to meet the exact specifications of your applications.

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

Bubble Point (psi)

14.5psi

Color

White

Diameter

47mm

Extractables

< 0.5% (Trace)

Filtration Area

17.35cm²

Flow Rate

7 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

50

pH Range

1-14

Pore Size (µm)

0.2

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 15-20 min

Support Material

Polypropylene

Wettability

Hydrophilic

• Multiphase Filtration - Processes emulsions and biphasic mixtures efficiently, allowing both the oil and water phases to pass through.
• Reaction Monitoring - Clarifies aliquots from ongoing chemical synthesis reactions, handling changing solvent polarities without failure.
• Field Water Sampling - Filters environmental water on-site, simplifying logistics by eliminating the need for methanol pre-wetting vials.
• Aggressive pH Filtering - Handles extreme pH solutions in environmental analysis, from acid mine drainage to caustic industrial wastewater.
• Universal Filter Holders - Filters both aqueous and organic HPLC samples in reusable holders without the mess of pre-wetting steps.
• Dissolution Calibration - Used to filter calibration standards in dissolution baths, ensuring drug recovery matches the test samples exactly.