Metricel Black Membrane,0.45um, 47mm, Grid, Gamma-Irradiated , Bulk w/ Parchment Separators, 200/Pk SKU: 66585

Polyethersulfone (PES) Membrane Filters - 66585

The Pall 66585 protects sensitive instrumentation and sample integrity by providing reliable particulate removal with minimal analyte adsorption or background interference. Optimized for laboratory use, a uniform Polyethersulfone (PES) matrix maintains its rated 0.45 cutoff under the pressures and flow conditions encountered during routine laboratory filtration. Because of this, lot-level verification of pore size, flow rate, and physical dimensions ensures that membrane performance remains predictable when scaling from method development to routine analysis.

Material Specifications

• Economical bulk packaging supports laboratories with high consumable throughput where individual sterile wrapping is unnecessary.
• Rated for continuous operation at temperatures reaching 55°C, enabling filtration of heated solvents and process fluids without material compromise.
• Asymmetric membrane architecture concentrates the retentive layer at the surface while maintaining an open substructure for sustained high flow.
• Rigorous quality controls validate retention at rated pore sizes, positioning PES for critical pharmaceutical and biotechnology filtration.
• Minimal background interference from extractables ensures PES membranes protect the integrity of sensitive biological preparations during filtration.

Multi-site studies where different laboratories must produce comparable data benefit from membranes manufactured to tight specifications, giving you confidence that site-to-site variability is not introduced by the filtration step. For exactly this reason, PES membranes maintain rated flow characteristics across a broader pressure range than many competing polymers, giving you faster processing without risking membrane failure. 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)

33psi

Color

Black

Diameter

47mm

Extractables

2% to 5%

Filtration Area

17.35cm²

Flow Rate

65 mL/min/cm²

Grid (Yes/No)

Yes

Material

Polyethersulfone (PES)

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

55°C

Membrane Thickness (µm)

130 – 160µm

Pack Count

50

pH Range

1-14

Pore Size (µm)

0.45

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 15-20 min

Support Material

N/A

Wettability

Hydrophilic

• Bioreactor Sampling - Integrated into sampling ports to allow fluid withdrawal from bioreactors without compromising the vessel environment.
• Environmental Water Test - Recovers bacteria from water samples for culture analysis, ensuring high recovery rates due to uniform pore structure.
• TFF Cassette Production - Used as the core membrane in flat-sheet tangential flow filtration devices for protein concentration and diafiltration.
• Enzyme Recovery - Ensures minimal yield loss during the filtration of dilute enzyme solutions due to its inherently low-binding surface.
• Large Volume Processing - Filters liters of culture media in vacuum filter units, offering the fastest flow rates for routine lab preparations.
• Tissue Culture Support - Acts as a porous growth support for 3D tissue culture inserts, allowing nutrient diffusion while anchoring the cells.