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Thumbnail Filmstrip of MCE Filter, ME Range (ME 24), w/b Grid 3.1mm, Sterile, 0.2um, 47mm D 100 pcs Images
Mixed Cellulose Ester (MCE) Membrane Filters - 7187-114
The Whatman 7187-114 combines a controlled pore size distribution with low extractable levels, ensuring the data accuracy that sensitive analytical methods require. On the performance side, reproducible separation characteristics define the membrane structure, protecting downstream instruments and preserving sample integrity throughout the filtration process. In practice, 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
- The biologically inert blend of cellulose acetate and cellulose nitrate provides a membrane surface optimized for organism capture and colony enumeration in microbiological assays.
- Feature a uniform pore structure that provides consistent flow rates and high throughputs across the full range of standard pore size ratings.
- Known for excellent wetting properties and high flow rates in aqueous filtration.
- 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.
- Mixed Cellulose Ester membranes combine cellulose acetate and cellulose nitrate polymers to deliver a smoother, more flexible membrane surface than pure cellulose nitrate.
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. 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
- white
- Diameter
- 47mm
- Extractables
- low
- Filtration Area
- 17.35cm²
- Flow Rate
- 60ml (Water)
- Grid (Yes/No)
- No
- 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)
- 0.2
- Sterility
- Nonsterile
- Sterilization
- Autoclavable at 121°C for 30 mins
- Support Material
- None
- Wettability
- Hydrophilic
- Biochemical Assays - High electrostatic properties effectively bind proteins and macromolecules, supporting various diagnostic and research assays.
- Microscopy mounting - Can be made transparent with immersion oil, allowing for direct light microscopy of retained particles on the surface.
- Bioburden Monitoring - Routine testing of pharmaceutical water loops to ensure bioburden levels remain within safe production specifications.
- Gravimetric Analysis - Maintains structural integrity during filtration and drying, providing precise weight measurements of retained particulates.
- Water Quality Testing - Features a gridded surface for easy colony counting, essential for regulatory compliance in municipal water quality labs.
- Black Grid Analysis - Black membrane variants enhance contrast for light-colored colonies, reducing eye strain during manual plate counting.