Whatman
ME28 1.2um 50mm 100/Pk SKU: 10400814

Mixed Cellulose Ester (MCE) Membrane Filters - 10400814

Designed to deliver reproducibility and confidence across critical sample types, the 10400814 provides the filtration consistency that method validation demands. A uniform Mixed Cellulose Ester (MCE) matrix maintains its rated 1.2 cutoff under the pressures and flow conditions encountered during routine laboratory filtration. 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

• Low tare weight and complete solubility in organic solvents make MCE the standard membrane for gravimetric particulate analysis where method specifications demand minimal blank correction.
• Hydrophilic by nature, the MCE membrane structure supports high non-specific adsorption for effective organism capture.
• Temperature rating of 130°C provides the thermal headroom required for warm sample processing, heated media preparation, and elevated-temperature analytical methods.
• The biologically inert blend of cellulose acetate and cellulose nitrate provides a membrane surface optimized for organism capture and colony enumeration in microbiological assays.
• Bulk packaging format provides cost-effective access for high-volume laboratories performing non-critical filtration and sample preparation.

Air monitoring and stack emissions sampling demand a filter medium that withstands the thermal and chemical conditions at your collection point — the material properties described above define the operating envelope for your application. MCE's naturally hydrophilic surface allows immediate wetting upon contact with aqueous samples, eliminating the pre-conditioning step and letting you begin filtration as soon as the membrane is seated in your holder. Complete product specifications, certificates of analysis, and lot-specific documentation to support your quality system requirements are available through Tisch Scientific upon request.

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

Diameter

50mm

Pore Size (µm)

1.2

Sterility

Nonsterile

Wetability

Hydrophilic

• 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.
• Sediment Collection - Efficiently harvests precipitates from chemical reactions, allowing for the recovery and drying of the solid synthesis product.
• 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.
• Stack Pre-filtration - Acts as a spacer or depth layer in multi-tier filtration stacks to extend the life of the final downstream membrane.