Sterile MicroPlus -31 STL Membrane, w/3.1mm White Grid for Membrane-Butler 0.45um 47mm Circle 400pcs SKU: 10407132

Cellulose Nitrate (CN) Membrane Filters - 10407132

Designed to deliver reproducibility and confidence across critical sample types, the Whatman 10407132 provides the filtration consistency that method validation demands. Built for consistent results, a uniform Cellulose Nitrate (CN) matrix maintains its rated 0.45 cutoff under the pressures and flow conditions encountered during routine laboratory filtration. In sum, 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

• High protein binding capacity makes cellulose nitrate the preferred membrane for Western blotting, dot blotting, and nucleic acid immobilization techniques that rely on efficient surface adsorption.
• Naturally hydrophilic and compatible with aqueous solutions, cellulose nitrate delivers high flow rates and rapid wet-out without requiring pre-conditioning or surfactant treatment.
• Surface retention characteristics allow captured particles and microorganisms to remain on the membrane face, supporting direct microscopic examination and physical recovery of collected material.
• Single-unit sterile packaging maintains aseptic integrity through storage and handling, supporting cleanroom protocols and GMP-compliant workflows.
• Cellulose nitrate membranes feature a narrow pore size distribution and low extractable levels, providing the controlled retention characteristics required for gravimetric and particulate analysis.

Whether your method calls for gravimetric analysis, particle visualization, or microbial enumeration, the pore consistency and surface uniformity documented above ensure that your results reflect the sample — not the filter. With these demands in mind, because cellulose nitrate dissolves completely in organic solvents like acetone and amyl acetate, you can recover every captured particle from the membrane surface for downstream gravimetric, spectroscopic, or chemical analysis. Secure your research outcomes by partnering with a filtration solution that understands your need for speed, accuracy, and reproducibility.

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

Bubble Point (psi)

40.6psi

Color

white

Diameter

47mm

Extractables

low

Filtration Area

17.35cm²

Flow Rate

60ml (Water)

Grid (Yes/No)

Yes

Material

Cellulose Nitrate (CN)

Maximum Operating Pressure

Holder-dependent

Maximum Operating Temperature (°C)

121°C

Membrane Thickness (µm)

145um

Pack Count

400

pH Range

4-8

Pore Size (µm)

0.45

Sterility

Sterile

Sterilization

Supplied Sterile (Single Use)

Support Material

None

Wettability

Hydrophilic

• Bioburden Monitoring - Surface retention keeps captured organisms accessible for direct incubation and enumeration without transfer steps.
• Gravimetric Particulate Analysis - Dissolves in organic solvents for complete particle recovery and accurate weight-based quantification.
• Biochemical Assays - High protein-binding capacity effectively immobilizes macromolecules, supporting lateral flow and diagnostic testing.
• Environmental Compliance - Documented retention characteristics at standard pore ratings support reproducibility in regulated testing programs.
• Aerosol Analysis - Low tare weight and acid digestibility enable chemical characterization of airborne particulates from air sampling.
• Colony Enumeration - Gridded surface variants facilitate accurate plate counting of captured microorganisms under standard magnification.