CA Membrane Circle (OE 66), 0.2um Pore Size, 47mm Circle (100 pcs) SKU: 10404112

Cellulose Acetate (CA) Membrane Filters - 10404112

The Whatman 10404112 combines a controlled pore size distribution with low extractable levels, ensuring the data accuracy that sensitive analytical methods require. Underpinning this performance, precision-manufactured Hydrophilic membrane with a verified 0.2 pore structure delivers consistent retention across the full operating range. As a result, precision manufacturing ensures that each membrane disc delivers the rated retention, flow rate, and surface consistency that analytical and microbiological methods require.

Material Specifications

• Distinguished by their very low protein binding, making them ideal for protein recovery.
• Supplied in bulk non-sterile packaging, offering an economical option for routine clarification and general laboratory filtration tasks.
• Naturally hydrophilic and compatible with aqueous biological solutions without pre-wetting or surfactant treatment.
• Manufactured with a uniform pore structure that maintains consistent retention characteristics across the full membrane surface.
• Offer improved chemical resistance to low molecular weight alcohols compared to MCE.

When your analytical method specifies membrane filtration as a sample preparation step, the retention characteristics and extractable profiles documented above allow you to meet method requirements without additional qualification work. Because cellulose acetate produces low levels of UV-absorbing extractables, your chromatographic and spectrophotometric baselines remain stable — reducing the background interference that complicates trace-level analyses. 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)

52.0psi

Color

white

Diameter

47mm

Extractables

low

Filtration Area

17.35cm²

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

• Low Binding Filtration - Ideal for filtering dilute protein solutions where maximum recovery is needed to maintain experimental accuracy.
• Enzyme Sterilization - Preserves enzymatic activity during cold sterilization, preventing the denaturation often caused by surface binding.
• Tissue Culture Media - Sterilizes heat-labile media components with minimal hold-up volume, ensuring expensive additives are not wasted.
• 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.
• Groundwater Filtration - Filters dissolved metals samples without adsorption, ensuring the filtrate represents the true environmental state.