CA Membrane Circle (ST 69), 1.2um Pore Size, 47mm Circle (100 pcs) SKU: 10403012

Cellulose Acetate (CA) Membrane Filters - 10403012

Precision-manufactured Hydrophilic membrane with a verified 1.2 pore structure delivers consistent retention performance across demanding laboratory filtration workflows. A uniform Cellulose Acetate (CA) matrix maintains its rated 1.2 cutoff under the pressures and flow conditions encountered during routine laboratory filtration. Altogether, each membrane disc reflects a manufacturing standard where retention characteristics, physical integrity, and dimensional accuracy are verified before release.

Material Specifications

• Offer improved chemical resistance to low molecular weight alcohols compared to MCE.
• Naturally hydrophilic and compatible with aqueous biological solutions without pre-wetting or surfactant treatment.
• Cellulose Acetate membranes combine high flow rates with exceptional thermal stability.
• 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.

Transitioning from qualitative screening to quantitative gravimetric analysis requires a membrane with documented tare weight consistency, and the manufacturing tolerances above ensure that your blank values remain within acceptable limits. 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. 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)

12.0psi

Color

white

Diameter

47mm

Extractables

low

Filtration Area

17.35cm²

Flow Rate

200ml (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)

1.2

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 30 mins

Support Material

None

Wettability

Hydrophilic

• Wine Stability Testing - Filters wine samples to check for colloidal stability, ensuring the product will not precipitate during shelf storage.
• 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.
• Biological Fluid Prep - Clarifies urine or cerebrospinal fluid for clinical chemistry without removing the low-abundance proteins of interest.
• Nutrient Analysis - Clarifies water for nitrate/phosphate testing without leaching nitrogenous material that could bias the results.
• Low Binding Filtration - Ideal for filtering dilute protein solutions where maximum recovery is needed to maintain experimental accuracy.