Ano Disc Circle w/ Support Ring, 47mm Diameter, 0.2um Pore Size (50/Pk) SKU: 6809-5022

Aluminum Oxide (Anopore) Membrane Filters - 6809-5022

The Whatman 6809-5022 combines a controlled pore size distribution with low extractable levels, ensuring the data accuracy that sensitive analytical methods require. Precision-manufactured Hydrophilic membrane with a verified 0.2 pore structure delivers consistent retention across the full operating range. Accordingly, precision manufacturing ensures that each membrane disc delivers the rated retention, flow rate, and surface consistency that analytical and microbiological methods require.

Material Specifications

• Inorganic and extremely rigid, offering no deformation under high pressure filtration.
• Thermally stable to over 400°C, Anopore membranes withstand sterilization and high-temperature processing without structural change.
• Precisely controlled pore geometry provides sharp molecular weight cutoffs for size-based separation of nanoparticles and macromolecules.
• Bulk format reduces per-unit packaging waste and cost, appropriate for routine particulate removal and clarification where aseptic handling is not specified.
• Non-fibrous ceramic construction eliminates the shedding and fiber release associated with depth filter media.

Scaling your method from development to routine production requires membrane consistency at every lot — the documented specifications of these membranes provide the reproducibility needed to validate the filtration step once. In these cases, aluminum oxide's inherent resistance to bacterial colonization eliminates the biofilm formation risk that forces more frequent replacement of polymeric membranes in your long-term or intermittent-use filtration setups. 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)

N/A

Color

white

Diameter

47mm

Extractables

minimal

Filtration Area

17.35cm²

Flow Rate

25ml (Water)

Grid (Yes/No)

No

Material

Aluminum Oxide

Maximum Operating Pressure

75psi

Maximum Operating Temperature (°C)

40°C

Membrane Thickness (µm)

60um

Pack Count

50

pH Range

4-9

Pore Size (µm)

0.2

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 30 mins

Support Material

Polypropylene Support Ring

Wettability

Hydrophilic

• Gravimetric Analysis - Captures total suspended solids from liquid samples on a weighed disc, ensuring accurate mass measurements for reporting.
• Air Particulate Sampling - Traps airborne dust and pollen on a positioned open-face filter disc for subsequent microscopic or chemical analysis.
• Microscopy mounting - Retains microorganisms on a flat surface, allowing for direct staining and enumeration under a high-power microscope.
• Vacuum Clarification - Utilized in Buchner funnels to rapidly remove particulates from large-volume batches of non-critical laboratory buffers.
• Sediment Collection - Efficiently harvests precipitates from chemical reactions, allowing for the recovery and drying of the solid synthesis product.
• Quality Control Testing - Serves as a standard check filter for routine batch purity tests, verifying the absence of visible physical contaminants.