Whatman
ME29 ST 3.0um 50mm 100/Pk SKU: 10400772

Mixed Cellulose Ester (MCE) Membrane Filters - 10400772

Designed to deliver reproducibility and confidence across critical sample types, the 10400772 provides the filtration consistency that method validation demands. Reproducible separation characteristics define the membrane structure, protecting downstream instruments and preserving sample integrity throughout the filtration process. 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

• Mixed Cellulose Ester membranes combine cellulose acetate and cellulose nitrate polymers to deliver a smoother, more flexible membrane surface than pure cellulose nitrate.
• Non-sterile configuration is suited for analytical sample preparation, mobile phase filtration, and other workflows where pre-sterilization is not required.
• Engineered to withstand operating pressures reaching > 10 psi, the construction prevents housing deformation that could compromise membrane retention.
• Hydrophilic by nature, the MCE membrane structure supports high non-specific adsorption for effective organism capture.
• The biologically inert blend of cellulose acetate and cellulose nitrate provides a membrane surface optimized for organism capture and colony enumeration in microbiological assays.

Multi-site studies where different laboratories must produce comparable data benefit from membranes manufactured to tight specifications, giving you confidence that site-to-site variability is not introduced by the filtration step. Because mixed cellulose ester membranes dissolve completely in specific organic solvents, you can recover captured particles from the membrane surface for further analysis — a capability that no other common membrane type provides. For detailed specification sheets, validation documentation, or technical guidance on membrane selection for your specific application, the Tisch Scientific team is available to support your evaluation.

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

Diameter

50mm

Pack Count

100

Pore Size (µm)

3

Sterility

Sterile

Wetability

Hydrophilic

• Air Particulate Sampling - Traps airborne dust and pollen on a positioned open-face filter disc for subsequent microscopic or chemical analysis.
• Radiometric Counting - Collects radioactive precipitates for scintillation counting, providing a consistent geometry for accurate data measurement.
• Vacuum Clarification - Utilized in Buchner funnels to rapidly remove particulates from large-volume batches of non-critical laboratory buffers.
• Gravimetric Analysis - Captures total suspended solids from liquid samples on a weighed disc, ensuring accurate mass measurements for reporting.
• Quality Control Testing - Serves as a standard check filter for routine batch purity tests, verifying the absence of visible physical contaminants.
• Microscopy mounting - Retains microorganisms on a flat surface, allowing for direct staining and enumeration under a high-power microscope.