WME BL GRST 47mm 0.45um 100/Pk SKU: 7153-104

Mixed Cellulose Ester (MCE) Membrane Filters - 7153-104

The Whatman 7153-104 protects sensitive instrumentation and sample integrity by providing reliable particulate removal with minimal analyte adsorption or background interference. Precision-manufactured Hydrophilic membrane with a verified 0.45 pore structure delivers consistent retention across the full operating range. Consequently, 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

• 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.
• Known for excellent wetting properties and high flow rates in aqueous filtration.
• Mixed Cellulose Ester membranes combine cellulose acetate and cellulose nitrate polymers to deliver a smoother, more flexible membrane surface than pure cellulose nitrate.
• Supplied in bulk non-sterile packaging, offering an economical option for routine clarification and general laboratory filtration tasks.

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. Meeting this challenge, 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. Elevate the quality of your analytical data today by standardizing on a filtration product built to meet the exact specifications of your applications.

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

Bubble Point (psi)

40.6psi

Color

black

Diameter

47mm

Extractables

low

Filtration Area

17.35cm²

Flow Rate

60ml (Water)

Grid (Yes/No)

Yes

Material

Mixed Cellulose Esters (MCE)

Maximum Operating Pressure

Holder-dependent

Maximum Operating Temperature (°C)

130°C

Membrane Thickness (µm)

135um

Pack Count

100

pH Range

4-9

Pore Size (µm)

0.45

Sterility

Nonsterile

Sterilization

Autoclavable at 121°C for 30 mins

Support Material

None

Wettability

Hydrophilic

• Microscopy mounting - Can be made transparent with immersion oil, allowing for direct light microscopy of retained particles on the surface.
• Water Quality Testing - Features a gridded surface for easy colony counting, essential for regulatory compliance in municipal water quality labs.
• Gravimetric Analysis - Maintains structural integrity during filtration and drying, providing precise weight measurements of retained particulates.
• Black Grid Analysis - Black membrane variants enhance contrast for light-colored colonies, reducing eye strain during manual plate counting.
• Bioburden Monitoring - Routine testing of pharmaceutical water loops to ensure bioburden levels remain within safe production specifications.
• Yeast & Mold Monitoring - Optimized for the recovery of larger fungal organisms in beverage testing, providing a clear background for ID.