wwPTFE Membrane Disc Filter - 0.45um, 90mm, 75/Pk SKU: 60551

Water-Wettable PTFE Membrane Filters - 60551

Engineered for high retention efficiency and superior chemical stability, the Pall 60551 achieves reliable separation results across a broad range of analytical and preparative applications. Building on this foundation, permanently hydrophilic surface modification renders the PTFE membrane wettable by aqueous solutions on contact, eliminating the alcohol pre-wetting step required by standard PTFE. Because of this, controlled production conditions produce membranes with documented pore size distribution and thickness tolerances, supporting method reproducibility across multiple filter lots.

Material Specifications

• Maximum operating temperature of 55°C accommodates warm sample filtration and elevated-temperature processes that exceed the limits of standard devices.
• Filters both aqueous and organic samples interchangeably without membrane changes, simplifying workflows that process mixed-polarity sample sets.
• Permanently modified hydrophilic surface maintains wettability throughout the membrane lifetime without surfactant additives that could leach into the filtrate.
• Economical bulk packaging supports laboratories with high consumable throughput where individual sterile wrapping is unnecessary.
• Broad solvent compatibility spans aggressive acids, bases, alcohols, and organic solvents that would degrade PES, nylon, and cellulose-based alternatives.

Reporting filtration parameters alongside your analytical results demands documented pore size, material chemistry, and lot traceability — the membrane specifications above provide the specificity that reviewers and auditors expect. Here, complete specification documentation for this device supports the traceability requirements of your quality system, providing the recorded evidence of consumable performance that auditors and method reviewers expect to see. Take control of your sample preparation variables and ensure that your data reflects the true nature of your work, rather than the quality of your consumables.

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

Bubble Point (psi)

9.14psi

Color

White

Diameter

90mm

Extractables

< 0.5% (Trace)

Filtration Area

63.62cm²

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

100

pH Range

1-14

Pore Size (µm)

0.45

Sterility

Nonsterile

Sterilization

Non-autoclavable

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.
• Multiphase Filtration - Processes emulsions and biphasic mixtures efficiently, allowing both the oil and water phases to pass through.
• Field Water Sampling - Filters environmental water on-site, simplifying logistics by eliminating the need for methanol pre-wetting vials.
• Reaction Monitoring - Clarifies aliquots from ongoing chemical synthesis reactions, handling changing solvent polarities without failure.
• Natural Product Prep - Clarifies crude plant extracts containing mixed polarities, ensuring all active compounds are retained in the filtrate.
• Aggressive pH Filtering - Handles extreme pH solutions in environmental analysis, from acid mine drainage to caustic industrial wastewater.