CA Membrane Circle (OE 67), 0.45um Pore Size, 13mm Circle (100 pcs) SKU: 10404001

Cellulose Acetate (CA) Membrane Filters - 10404001

Engineered for high retention efficiency and superior chemical stability, the Whatman 10404001 achieves reliable separation results across a broad range of analytical and preparative applications. Precision-manufactured Hydrophilic membrane with a verified 0.45 pore structure delivers consistent retention across the full operating range. Taken together, 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

• Bulk format reduces per-unit packaging waste and cost, appropriate for routine particulate removal and clarification where aseptic handling is not specified.
• Cellulose Acetate membranes combine high flow rates with exceptional thermal stability.
• Distinguished by their very low protein binding, making them ideal for protein recovery.
• Manufactured with a uniform pore structure that maintains consistent retention characteristics across the full membrane surface.
• Particularly well suited for electrophoresis and immunoassay support applications where predictable binding behavior is essential.

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. For this application, 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. 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)

35.0psi

Color

white

Diameter

13mm

Extractables

low

Filtration Area

1.33cm²

Flow Rate

55ml (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)

0.45

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 30 mins

Support Material

None

Wettability

Hydrophilic

• Biological Fluid Prep - Clarifies urine or cerebrospinal fluid for clinical chemistry without removing the low-abundance proteins of interest.
• Low Binding Filtration - Ideal for filtering dilute protein solutions where maximum recovery is needed to maintain experimental accuracy.
• 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.
• 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.