Whatman
CA Membrane Circle (OE 66), 0.2um Pore Size, 25mm Circle (100 pcs) SKU: 10404106

Cellulose Acetate (CA) Membrane Filters - 10404106

The Whatman 10404106 combines a controlled pore size distribution with low extractable levels, ensuring the data accuracy that sensitive analytical methods require. On the performance side, precision membrane geometry balances retention sharpness with sustainable flow rates, minimizing the pressure buildup that leads to premature filter replacement. For this reason, from raw polymer through final inspection, the manufacturing process is designed to ensure that every membrane disc meets the performance specifications of its grade designation.

Material Specifications

• Particularly well suited for electrophoresis and immunoassay support applications where predictable binding behavior is essential.
• Manufactured with a uniform pore structure that maintains consistent retention characteristics across the full membrane surface.
• Distinguished by their very low protein binding, making them ideal for protein recovery.
• Offer improved chemical resistance to low molecular weight alcohols compared to MCE.
• Cellulose Acetate membranes combine high flow rates with exceptional thermal stability.

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. Compatibility with dilute acids and aqueous buffers covers the matrix range typical in clinical, environmental, and food testing laboratories, reducing the number of membrane types you need to stock. 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)

52.0psi

Color

white

Diameter

25mm

Extractables

low

Filtration Area

4.91cm²

Flow Rate

20ml (Water)

Grid (Yes/No)

No

Material

Cellulose Acetate (CA)

Maximum Operating Pressure

Holder-dependent

Maximum Operating Temperature (°C)

180°C

Membrane Thickness (µm)

135um

Pack Count

100

pH Range

4-8

Pore Size (µm)

0.2

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 30 mins

Support Material

None

Wettability

Hydrophilic

• Isotope Studies - Used in binding studies where the membrane itself must not interact with the radioactive ligand or the receptor protein.
• Wine Stability Testing - Filters wine samples to check for colloidal stability, ensuring the product will not precipitate during shelf storage.
• Biological Fluid Prep - Clarifies urine or cerebrospinal fluid for clinical chemistry without removing the low-abundance proteins of interest.
• Groundwater Filtration - Filters dissolved metals samples without adsorption, ensuring the filtrate represents the true environmental state.
• Nutrient Analysis - Clarifies water for nitrate/phosphate testing without leaching nitrogenous material that could bias the results.
• Tissue Culture Media - Sterilizes heat-labile media components with minimal hold-up volume, ensuring expensive additives are not wasted.