Whatman
ME28 1.2um 100mm 50/Pk SKU: 10400821

Mixed Cellulose Ester (MCE) Membrane Filters - 10400821

Precision-manufactured Hydrophilic membrane with a verified 1.2 pore structure delivers consistent retention performance across demanding laboratory filtration workflows. Verified 1.2 pore distribution across the Hydrophilic membrane surface guarantees batch-to-batch consistency in particle capture and analyte passage. Consistent surface properties across the full membrane area support uniform particle capture and reliable results in gravimetric, microscopic, and culture-based analytical workflows.

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.
• Feature a uniform pore structure that provides consistent flow rates and high throughputs across the full range of standard pore size ratings.
• Rated for a maximum operating pressure of > 10 psi, providing the structural margin required for high-viscosity and high-volume filtration runs.
• Hydrophilic by nature, the MCE membrane structure supports high non-specific adsorption for effective organism capture.
• Materials of construction maintain their mechanical and chemical properties at temperatures up to 130°C, supporting heated filtration protocols.

Reporting filtration parameters alongside your analytical results demands documented pore size, material chemistry, and lot traceability — the membrane specifications above provide the specificity that reviewers and auditors expect. Low background interference from mixed cellulose ester membranes means your gravimetric measurements reflect the mass of captured particles, not membrane extractables — reducing the blank corrections that add uncertainty to your weight-based analyses. If you need help matching a membrane chemistry and pore size to your sample matrix, Tisch Scientific's technical staff can walk you through the selection process and provide application-specific recommendations.

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

Diameter

100mm

Pack Count

50

Pore Size (µm)

1.2

Sterility

Nonsterile

Wetability

Hydrophilic

• Sediment Collection - Efficiently harvests precipitates from chemical reactions, allowing for the recovery and drying of the solid synthesis product.
• Stack Pre-filtration - Acts as a spacer or depth layer in multi-tier filtration stacks to extend the life of the final downstream membrane.
• Microscopy mounting - Retains microorganisms on a flat surface, allowing for direct staining and enumeration under a high-power microscope.
• Gravimetric Analysis - Captures total suspended solids from liquid samples on a weighed disc, ensuring accurate mass measurements for reporting.
• Radiometric Counting - Collects radioactive precipitates for scintillation counting, providing a consistent geometry for accurate data measurement.
• Quality Control Testing - Serves as a standard check filter for routine batch purity tests, verifying the absence of visible physical contaminants.