Ano Disc Circle w/ Support Ring, 25mm Diameter, 0.2um Pore Size (50/Pk) SKU: 6809-6022

Aluminum Oxide (Anopore) Membrane Filters - 6809-6022

Designed to deliver reproducibility and confidence across critical sample types, the Whatman 6809-6022 provides the filtration consistency that method validation demands. Optimized for laboratory use, precision-manufactured Hydrophilic membrane with a verified 0.2 pore structure delivers consistent retention across the full operating range. Consequently, precision manufacturing ensures that each membrane disc delivers the rated retention, flow rate, and surface consistency that analytical and microbiological methods require.

Material Specifications

• Anopore Aluminum Oxide membranes feature a unique honeycomb pore structure for precision.
• Thermally stable to over 400°C, Anopore membranes withstand sterilization and high-temperature processing without structural change.
• Inorganic and extremely rigid, offering no deformation under high pressure filtration.
• Non-fibrous ceramic construction eliminates the shedding and fiber release associated with depth filter media.
• Precisely controlled pore geometry provides sharp molecular weight cutoffs for size-based separation of nanoparticles and macromolecules.

Maintaining accreditation under ISO 17025 or similar quality frameworks requires documented traceability at every step — the specification compliance of each membrane lot supports your ongoing audit readiness. Meeting this challenge, 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. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

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

Bubble Point (psi)

N/A

Color

white

Diameter

25mm

Extractables

minimal

Filtration Area

4.91cm²

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

• Quality Control Testing - Serves as a standard check filter for routine batch purity tests, verifying the absence of visible physical contaminants.
• Gravimetric Analysis - Captures total suspended solids from liquid samples on a weighed disc, ensuring accurate mass measurements for reporting.
• Vacuum Clarification - Utilized in Buchner funnels to rapidly remove particulates from large-volume batches of non-critical laboratory buffers.
• Stack Pre-filtration - Acts as a spacer or depth layer in multi-tier filtration stacks to extend the life of the final downstream membrane.
• Sediment Collection - Efficiently harvests precipitates from chemical reactions, allowing for the recovery and drying of the solid synthesis product.
• Microscopy mounting - Retains microorganisms on a flat surface, allowing for direct staining and enumeration under a high-power microscope.